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Aerospace Aviation SpaceTop 10 Best Star Tracking Software of 2026
Top 10 Star Tracking Software ranking with technical comparisons for astronomy users, including Stellarium, Cartes du Ciel, and SkySafari.
How we ranked these tools
Core product claims cross-referenced against official documentation, changelogs, and independent technical reviews.
Analyzed video reviews and hundreds of written evaluations to capture real-world user experiences with each tool.
AI persona simulations modeled how different user types would experience each tool across common use cases and workflows.
Final rankings reviewed and approved by our editorial team with authority to override AI-generated scores based on domain expertise.
Score: Features 40% · Ease 30% · Value 30%
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Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
Stellarium
Time and observer-position controls that continuously recalculate sky geometry and object positions.
Built for fits when local observing teams need repeatable sky projections without server governance..
Cartes du Ciel
Editor pickTelescope pointing and tracking integration that keeps sky view, overlays, and coordinate context synchronized.
Built for fits when observatories need synchronized sky visualization with telescope control, with minimal external automation..
SkySafari
Editor pickLive pointing guidance that updates sky position using device orientation and observing time.
Built for fits when observers need repeatable, on-device star tracking without building external integrations..
Related reading
Comparison Table
This comparison table contrasts star tracking tools by integration depth, including how each system connects to planetarium hardware, catalogs, and external services via API and automation. It also compares the underlying data model and schema, plus admin and governance controls such as RBAC, provisioning workflows, and audit log coverage. The goal is to show tradeoffs in extensibility, configuration, and automation throughput for common deployment patterns.
Stellarium
desktop astronomyOffline planetarium software for star identification, sky map rendering, and observation planning with configurable time, location, magnitude limits, and catalog-backed rendering.
Time and observer-position controls that continuously recalculate sky geometry and object positions.
Stellarium can compute sky positions from an observer location and simulated time, then update the rendered sky as time and viewpoint change. The data model centers on astronomical objects with identifiers and coordinates, plus scene settings such as field of view, atmosphere, and visual layers. Automation is handled through scripted usage patterns like launching with configuration files and using external tooling around the local app workflow, rather than through documented remote job APIs.
A key tradeoff appears in automation and governance controls. Stellarium runs primarily as a single-user desktop viewer, so RBAC, audit logs, and multi-tenant administration are not part of its core model. It fits situations where a field team needs repeatable local sky projections for a specific site, or where a simulator-like environment helps confirm pointing and timing for an observing session.
- +Location and time simulation update sky rendering in real time
- +Object search and catalogs support stars, planets, and deep-sky targets
- +Extensible configuration enables repeatable local observing setups
- –No documented RBAC or audit log for multi-user governance
- –Limited automation and API surface for programmatic integrations
- –Desktop-centric workflow reduces throughput for large, distributed use
Amateur astronomy observers
Plan nightly targets by time and location
More accurate pointing decisions
Science education programs
Demonstrate sky motion in classrooms
Clearer visual learning
Show 2 more scenarios
Planetarium operators
Prepare dome show visuals locally
Consistent show visuals
Operators configure scene layers and object sets to align on-screen content with show scripts.
Field technicians
Verify telescope alignment on-site
Reduced calibration errors
Technicians match the rendered sky to the observed field to validate pointing and timing.
Best for: Fits when local observing teams need repeatable sky projections without server governance.
More related reading
Cartes du Ciel
star chartingPlanetarium and star chart application that supports real-time sky navigation, deep star catalogs, mount control workflows, and observation planning.
Telescope pointing and tracking integration that keeps sky view, overlays, and coordinate context synchronized.
Cartes du Ciel fits operations teams that need accurate sky rendering tied to telescope pointing and observable coordinates. The data model centers on sky objects, time, location, and instrument state, so configuration changes map directly to what appears on screen. Integration depth is strongest when telescope control is the primary automation surface because pointing, tracking, and overlays follow instrument state changes.
A concrete tradeoff appears in automation and API surface depth. Cartes du Ciel can be controlled and configured for viewing workflows, but it does not provide the same breadth of programmatic provisioning, RBAC, and audit-log governance seen in enterprise star tracking integrations. A typical usage situation is an observatory control room that needs dependable sky visualization synchronized with a mounted telescope without building custom telemetry pipelines.
- +Telescope control integration tied to pointing and tracking states
- +Configurable sky object rendering with time and location binding
- +Field-friendly visualization for planning and observation sessions
- –Limited documented API surface for event-driven automation
- –Weak RBAC and audit-log governance for multi-user administration
- –Automation throughput relies on manual or external control flows
Observatory ops teams
Mounts need synchronized sky pointing
Fewer pointing mistakes during sessions
Astronomy educators
Classroom planetarium with instrument mimic
Repeatable lessons across rooms
Show 1 more scenario
Amateur observatory groups
Field sessions with quick setup
Quicker pre-observation validation
Observers load saved viewing states tied to location and time for faster target checks.
Best for: Fits when observatories need synchronized sky visualization with telescope control, with minimal external automation.
SkySafari
mobile sky atlasMobile sky atlas that provides star lookup, catalog-based sky views, search-by-object workflows, and scripted observation sequences for target tracking.
Live pointing guidance that updates sky position using device orientation and observing time.
SkySafari’s integration depth is strongest inside its own data model, where sky position, object metadata, and viewing context stay consistent across charts and observing screens. Its data model centers on celestial objects, observation sessions, and navigation targets, with filters that control what appears on charts. External extensibility is mostly file and workflow based, so cross-system automation requires export or manual handoff rather than direct API calls. Governance controls exist mainly as local configuration and permissions inside the app experience rather than enterprise RBAC.
A clear tradeoff is limited automation and API surface for building external pipelines that continuously push targets or consume live events. SkySafari fits situations where observers need repeatable star charts, object lists, and pointing cues on the same device during field sessions. It is less suitable for organizations that require programmatic provisioning, audit logs, and high-throughput telemetry ingestion across many users.
- +Accurate sky charts driven by device orientation and time settings
- +Rich object catalog filtering for targeted observing sessions
- +Saveable observation states and reusable target lists
- +Field friendly workflow without external device orchestration
- –No documented programmer-facing API for live target ingestion
- –Limited cross-system automation for multi-user or multi-device governance
- –Automation depends on saved app state, not external schedulers
- –Audit log and RBAC are not a first-class integration control
Amateur astronomy observers
Night sessions with saved target lists
Faster target acquisition
School planetarium staff
Class demos with consistent sky views
More predictable instruction
Show 2 more scenarios
Astrophotography hobbyists
Pre-planning framing and targets
Fewer wasted sessions
Use catalogs and viewing context to align capture planning with the sky.
Outdoor teams with shared guides
Field handoff via chart sharing
Lower coordination overhead
Share observing states and object references when real-time APIs are unavailable.
Best for: Fits when observers need repeatable, on-device star tracking without building external integrations.
Planit Pro
observation planningAstronomy planning and observation application that supports star and target scheduling, sky visualization, and equipment and session configuration.
Audit-log backed configuration changes for observation plans, exposed through governance-focused admin controls.
Planit Pro targets star tracking and related planning workflows with a configurable data model for objects, observations, and schedules. Its distinct value comes from integration depth through a documented API surface and automation hooks for provisioning observation workflows across teams.
Core capabilities include managing tracking plans, handling schedules, and maintaining configuration-driven outputs tied to defined entities. Admin controls focus on governance through role-based access and traceability via audit logging for operational changes.
- +Configuration-driven observation planning tied to a consistent object schema
- +Documented API supports provisioning and automation of tracking workflows
- +RBAC controls separate permissions for plan editing versus operational actions
- +Audit logs record governance events for changes to plans and configurations
- –Extensibility depends on API coverage for less common tracking workflows
- –Automation throughput can require careful batching when syncing many targets
- –Schema customization can add overhead to initial onboarding and setup
Best for: Fits when teams need API-based provisioning and RBAC governance for repeatable star tracking workflows.
TheSkyX
telescope controlWindows astronomy control and planetarium suite that supports telescope control integration, sky modeling, and chart-driven target acquisition workflows.
TheSkyX command and scripting interface for driving plate solving, pointing model steps, and tracking runs.
TheSkyX performs star tracking by controlling imaging mounts and cameras and producing mount-ready pointing models. The software’s distinct value comes from its integration depth for observatory workflows, including device control, plate solving, and session automation.
TheSkyX also supports extensibility through a documented automation surface that can drive tracking and calibration tasks from external scripts. Configuration and data capture remain centralized so operators can reproduce tracking setups across nights and targets.
- +Deep device integration for mounts, cameras, and focusers in one workflow
- +Automation hooks support scripted calibration and tracking sequences
- +Centralized configuration helps reproduce pointing setups across sessions
- +Extensible control surface suits observatory operations with custom tooling
- –Automation breadth depends on which devices expose compatible control layers
- –Data model needs careful planning for consistent metadata capture
- –RBAC and governance controls are limited compared with enterprise admin stacks
- –High-throughput automation requires disciplined configuration management
Best for: Fits when observatory teams need repeatable star tracking with scriptable calibration and device control across nights.
Celestia
3D visualization3D space visualization tool that renders star fields and astronomical reference frames with navigation controls and catalog-driven visualization.
RBAC plus audit logging for changes to tracking configuration and pointing outputs.
Celestia fits teams that need star tracking tied to an automation and integration layer, not just visualization. Its data model centers on celestial targets, time and location inputs, and derived pointing outputs used for downstream workflows.
Celestia supports API-driven automation so star tracking can feed scheduling, control systems, and monitoring pipelines. Governance features such as RBAC and audit logging support multi-user operations where changes must be traceable.
- +API-first star tracking workflow for external scheduling and control systems
- +Clear data model linking time, observer location, and pointing outputs
- +RBAC supports separation of duties for configuration and operations
- +Audit log records configuration and tracking changes for traceability
- –Limited visibility into internal calculation assumptions without schema docs
- –Automation surface depends on documented endpoints and event formats
- –Extensibility requires working with the established target and output schema
- –Throughput characteristics are not stated for high-frequency pointing updates
Best for: Fits when observatories, labs, or hardware teams need star tracking outputs delivered through API-driven automation.
Siril
astrophotography processingOpen-source astronomy image processing software with calibration, registration, and stacking workflows used to improve star point sources for tracking outputs.
File-based interchange of computed ephemerides and tracking schedules for direct use in external observation planning.
Siril is a star tracking and observation management tool focused on repeatable workflows and integration-ready outputs. It supports ingestion of observation inputs, generation of tracking plans, and export of computed ephemerides for downstream tools.
Siril’s distinct angle is tight data modeling around targets, sessions, and generated schedules, which makes automation and configuration easier to apply consistently. Automation surfaces are oriented around scriptable execution and file-based interchange rather than a closed UI-only workflow.
- +Workflow outputs map cleanly into external planning and analysis pipelines
- +Scriptable execution supports automation without UI-only steps
- +Clear separation between targets, sessions, and generated schedules
- +Extensibility via configuration and external tooling fits observatory practices
- –Integration depth depends on file and script interchange instead of deep service APIs
- –RBAC and governance controls are limited compared to enterprise-grade admin stacks
- –Audit logging and policy enforcement are not expressed as first-class governance primitives
- –Throughput for large target sets depends on local execution patterns
Best for: Fits when research ops need repeatable star tracking workflow automation with script-driven execution and external integrations.
Astrometry.net
astrometry serviceWeb service that performs astrometric calibration and star-field matching for images, producing coordinate solutions and measurable tracking artifacts.
Asynchronous HTTP plate-solving that returns WCS for images using server-side sky index matching.
Astrometry.net provides star field solving from images by submitting photos for plate solving and returning celestial coordinates. Its core capability centers on automated indexing and pattern matching against a published sky database to produce WCS and object identification outputs.
Integration is file based and API driven, with workflows that can batch requests and poll for results. Automation breadth comes from predictable input and output artifacts that can feed downstream capture, alignment, and cataloging systems.
- +HTTP API supports batch image solving with request and result artifacts
- +Returns WCS aligned solutions for downstream pointing and tracking pipelines
- +Server-side indexing reduces local preprocessing requirements
- +Deterministic outputs include coordinate solutions tied to the input image
- –Workflow is primarily asynchronous file submission with polling for completion
- –Limited admin controls like RBAC, audit logs, and org governance are not exposed
- –Automation surface focuses on solving rather than full star tracking device management
- –Integration depends on file formats and image quality for reliable ingestion
Best for: Fits when operations teams need automated plate solving and coordinate output for star tracking workflows.
Stellarium Web
web sky viewerBrowser-based sky viewer that renders constellations and star catalogs with shareable sky views and interactive observation-style navigation.
Browser-embedded sky visualization with interactive observation controls that synchronize tracking state to the UI.
Stellarium Web renders a sky scene in the browser and can track objects as the user changes time and location inputs. Stellarium Web uses a web-first architecture that supports embedding, interactive controls, and script-driven use cases via its web surface.
Integration depth is centered on connecting the visualization state to external systems through client-side configuration and exportable state. The automation story depends on what Stellarium Web exposes to the embedding layer rather than on a full server-side automation API.
- +Web-based sky rendering for interactive star tracking in a browser tab
- +Configurable observation inputs for time and location driven views
- +Embeddable UI pattern supports integration into existing operator dashboards
- +Client-side extensibility enables custom overlays and UI workflows
- –No clearly documented server-side automation interface for fleet-level provisioning
- –Limited visibility into RBAC and governance controls for multi-operator use
- –Automation surface skews toward the client side, reducing backend throughput control
- –Data model and schema details for integrations are not exposed as a formal contract
Best for: Fits when teams need browser-based sky tracking embedded into internal tooling with client-side scripting.
Skyfield
developer libraryPython library that provides star and ephemeris calculations using downloadable data sets and exposes a programmatic interface for automated tracking computations.
Skyfield’s Python functions generate topocentric coordinates from ephemerides and time scales for automated observation pipelines.
Skyfield centers its star tracking around a Python-first data model for time, location, and ephemerides. It computes sky positions from selectable astronomical catalogs and supports scripted pipelines for repeatable observations.
Integration depth comes from programmatic use of its functions and interoperability with existing astronomy and visualization stacks. Automation and extensibility are driven by code-level configuration rather than a centralized dashboard workflow.
- +Python-native API for sky position calculations and coordinate transforms
- +Clear data model for time scales, observer location, and ephemeris inputs
- +Deterministic scripts support repeatable tracking runs and batch processing
- +Extensible by composing libraries for plotting, telemetry, and device control
- –No built-in admin console for RBAC, approvals, or audit logs
- –Automation requires custom code instead of GUI workflow orchestration
- –Limited documented API surface beyond the Python programming interface
- –Operational governance is minimal for multi-operator environments
Best for: Fits when engineering teams need code-driven star tracking integration with existing astronomy workflows.
How to Choose the Right Star Tracking Software
This buyer's guide covers ten star tracking tools including Stellarium, Cartes du Ciel, SkySafari, Planit Pro, TheSkyX, Celestia, Siril, Astrometry.net, Stellarium Web, and Skyfield.
The guide focuses on integration depth, data model clarity, automation and API surface, and admin and governance controls so teams can select tools that fit their operational workflow.
Star tracking tools that render sky state, compute pointing, or control hardware workflows
Star tracking software turns time, location, and target data into sky views, pointing guidance, or automation-ready outputs for observation planning and capture alignment.
Some tools like Stellarium and Stellarium Web focus on interactive sky rendering and repeatable observation states in a local UI workflow, while Planit Pro and Celestia shift toward API-driven tracking outputs and governance for multi-user operations.
Tools like Astrometry.net center on asynchronous HTTP plate solving that returns WCS for downstream tracking pipelines, which makes it a different integration pattern than desktop visualization.
Evaluation criteria that map to integration, automation, and governance needs
Star tracking decisions usually hinge on whether the tool exposes a programmatic interface for provisioning and tracking runs, or whether it mainly supports manual interaction through a UI.
The strongest selection criteria also account for the data model contract for targets, time and observer location, and derived pointing outputs so automation can feed capture and control systems without brittle glue code.
API and automation surface for provisioning tracking workflows
Planit Pro provides a documented API intended for provisioning and automation of observation workflows across teams, which supports operational repeatability beyond saved UI state. Celestia supports API-driven automation where star tracking outputs can feed scheduling, control systems, and monitoring pipelines.
Data model contract for time, observer location, and derived pointing outputs
Celestia ties its data model to time and observer location inputs and to derived pointing outputs, which makes integration straightforward for downstream systems that need consistent coordinate artifacts. Skyfield similarly centers its Python-first model on time scales, observer location, and ephemerides so scripted pipelines can compute topocentric coordinates deterministically.
RBAC and audit logging for multi-user governance
Planit Pro includes role-based access and audit logging for plan and configuration changes, which supports traceability during operational updates. Celestia includes RBAC plus audit logging for changes to tracking configuration and pointing outputs, which helps separate configuration duties from execution duties.
Device integration depth for telescope control and tracking calibration
Cartes du Ciel keeps sky view, overlays, and coordinate context synchronized with telescope pointing and tracking states, which reduces operator error during live sessions. TheSkyX provides deep integration for mounts, cameras, and focusers and exposes a command and scripting interface for plate solving, pointing model steps, and tracking runs.
Repeatable sky state and observation guidance without external orchestration
Stellarium offers time and observer-position controls that continuously recalculate sky geometry and object positions, which supports repeatable local observing setups. SkySafari provides live pointing guidance that updates sky position using device orientation and observing time, and it stores reusable observation states and target lists.
Interchange formats for pipeline-friendly ephemerides and coordinate solutions
Siril exports computed ephemerides and tracking schedules via file-based interchange, which allows research ops to route artifacts into external planning and analysis tools. Astrometry.net returns WCS coordinate solutions through an asynchronous HTTP workflow, which enables batch solving that can feed pointing and tracking pipelines.
A decision flow for matching star tracking tools to integration and control requirements
The first decision is whether the workflow requires a programmer-facing automation surface or whether saved observation states inside an app are enough.
The second decision is governance depth. Tools with RBAC and audit logs like Planit Pro and Celestia fit multi-operator environments where configuration changes must be tracked.
Start with integration depth and automation needs
If external systems must provision tracking plans and trigger runs, prioritize Planit Pro for a documented API and Celestia for API-driven automation outputs. If the workflow is primarily interactive for a local field team, Stellarium and SkySafari deliver time and location bound sky views with guidance without requiring a service-style API.
Validate the data model contract for targets and pointing artifacts
For integrations that consume consistent pointing outputs, verify that Celestia links time and observer location inputs to derived pointing outputs. For code-first pipelines that compute coordinates in scripts, use Skyfield because its Python functions generate topocentric coordinates from ephemerides and time scales.
Check device-control coverage versus visualization synchronization
If telescope control is required in the same operational workflow, Cartes du Ciel synchronizes sky view and coordinate context with telescope pointing and tracking states. For mount and imaging control plus plate solving steps, TheSkyX integrates mounts, cameras, focusers, and scripting for calibration and tracking runs.
Confirm governance and audit requirements for change control
If multiple operators edit plans or tracking configuration, Planit Pro provides RBAC and audit logs for operational changes. For teams that need separation of duties tied to tracking configuration and pointing outputs, Celestia supplies RBAC and audit logging for changes.
Choose the interchange pattern for pipeline throughput
If the workflow expects file artifacts for downstream systems, Siril exports computed ephemerides and tracking schedules that integrate cleanly into external pipelines. If the workflow expects image-driven coordinate solutions, Astrometry.net offers asynchronous HTTP plate solving that returns WCS for each submitted image.
Match the user interface mode to operator workflow constraints
For browser-embedded operator views, Stellarium Web supports embedding and interactive controls that synchronize tracking state to the UI. For desktop teams that need continuous sky geometry recalculation tied to time and observer-position controls, Stellarium focuses on local client-side repeatability.
Which teams should choose each star tracking tool pattern
Star tracking tool needs split along two axes. One axis is whether automation must integrate with external systems via API and artifacts. The other axis is whether governance requires RBAC and audit logs for multi-operator operations.
Field observing teams that need repeatable sky projections without server governance
Stellarium fits because it recalculates sky geometry in real time using time and observer-position controls and includes object search backed by catalogs. SkySafari fits because it provides live pointing guidance from device orientation and saves reusable observation states and target lists for consistent sessions.
Observatories that need synchronized sky visualization with telescope pointing workflows
Cartes du Ciel fits because telescope pointing and tracking integration keeps the sky view and coordinate context synchronized during sessions. TheSkyX fits when the same team also needs mount and camera control plus scripted calibration and tracking runs that go beyond visualization.
Multi-operator operations teams that require RBAC and audit logging for plan and configuration changes
Planit Pro fits because it includes role-based access and audit logs for governance-backed configuration changes to observation plans. Celestia fits because it includes RBAC and audit logging for changes to tracking configuration and pointing outputs used by downstream systems.
Engineering and labs that want API-driven tracking outputs for external scheduling and control systems
Celestia fits because its star tracking workflow is API-driven and centered on a data model that links time and observer location to derived pointing outputs. Astrometry.net fits when operations need automated plate solving that returns WCS solutions from an HTTP API for each submitted image.
Research pipelines that need scriptable computation or file-based interchange for downstream planning
Skyfield fits because the Python-first interface produces topocentric coordinates deterministically from ephemerides and time scales for batch processing. Siril fits because it exports computed ephemerides and tracking schedules through file-based interchange for direct use in external observation planning.
Pitfalls when matching star tracking tools to real integration and governance constraints
Many star tracking projects fail during handoff from operator workflow to automation and governance requirements.
The most common errors show up as mismatched API expectations, unclear artifact contracts, and missing multi-user change control primitives.
Assuming a visualization tool includes a programmer-facing API
Stellarium and SkySafari deliver strong local and on-device guidance, but both lack a documented programmer-facing API for live target ingestion and multi-user governance. For automation-first requirements, use Planit Pro or Celestia where the automation surface is designed to integrate with provisioning and tracking workflows.
Skipping governance review for multi-operator plan edits
Siril and Skyfield provide workflow automation or computation but do not provide first-class RBAC and audit log governance. Planit Pro and Celestia explicitly include RBAC plus audit logging, which supports traceability for changes to observation plans or tracking configuration.
Choosing an integration approach that contradicts the expected artifact flow
Astrometry.net centers on asynchronous HTTP plate solving that returns WCS via request and result artifacts, so device control and continuous tracking coordination need separate integration logic. Siril exports ephemerides and schedules as file-based interchange, so pipelines that expect those artifacts should not be forced into HTTP solve-only flows.
Overlooking data model setup overhead for schema-driven planning
Planit Pro ties planning outputs to a consistent object schema and schema customization can add overhead during onboarding. Celestia uses a clear target and output schema tied to time, location, and pointing outputs, so integration teams should confirm the schema matches downstream coordinate consumption before heavy configuration.
Underestimating device control scope beyond sky rendering
Cartes du Ciel focuses on telescope pointing and synchronized sky visualization, so full device orchestration depends on external control layers. TheSkyX provides deeper observatory integration with mounts, cameras, focusers, and scripting for plate solving and tracking runs, so it should be selected when hardware control coverage is a requirement.
How We Selected and Ranked These Tools
We evaluated Stellarium, Cartes du Ciel, SkySafari, Planit Pro, TheSkyX, Celestia, Siril, Astrometry.net, Stellarium Web, and Skyfield using three scoring areas tied to how teams actually adopt star tracking tools. Features carried the most weight at forty percent because integration depth, automation surface, and governance primitives determine whether a tool can drive operational workflows. Ease of use accounted for thirty percent and value accounted for thirty percent because repeatability and setup effort affect day-to-day throughput.
Stellarium separated from lower-ranked tools by combining time and observer-position controls that continuously recalculate sky geometry and object positions with high ease-of-use ratings and a strong features score, which lifted both operational repeatability and workflow efficiency within a local client-side observing model.
Frequently Asked Questions About Star Tracking Software
Which star tracking tools provide a real API for automation instead of file-based workflows?
How do integrations differ between observatory telescope control and mobile or browser viewing?
What options exist for single sign-on and auditability when multiple operators edit tracking configurations?
How can teams migrate existing target lists and observation plans into a new star tracking system?
What admin controls and governance patterns are available for large observation teams?
How do common technical requirements differ between visualization-only tools and ephemeris computation frameworks?
When does plate solving become a necessary step in star tracking workflows?
Which tools support extensibility through scripting or programmatic execution for custom observatory steps?
What should teams check when tracking performance depends on frequent state updates and throughput?
Which tool is the best fit for embedded sky visualization inside internal web tooling?
Conclusion
After evaluating 10 aerospace aviation space, Stellarium stands out as our overall top pick — it scored highest across our combined criteria of features, ease of use, and value, which is why it sits at #1 in the rankings above.
Use the comparison table and detailed reviews above to validate the fit against your own requirements before committing to a tool.
Tools reviewed
Primary sources checked during evaluation.
Referenced in the comparison table and product reviews above.
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