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Environment EnergyTop 10 Best Cooling Load Calculation Software of 2026
Top 10 cooling load calculation software ranked by modeling features and workflow fit for HVAC design teams, with tools like Carrier HAP.
How we ranked these tools
Vendors set the topic, but our editors set the inclusion criteria and the evaluation framework before research starts.
Search agents gather the source set and the review record, including transcriptions of video reviews and podcasts.
Framework: Features 40% · Ease 30% · Value 30%
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DesignBuilder is the best choice if you need geometry-linked, time-series cooling load studies across design variants, while Cool Calc fits teams sizing residential HVAC with consistent Manual J zone and peak load reporting without full BIM-to-load automation.
Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
DesignBuilder
3D geometry to thermal zoning linkage that keeps envelope, infiltration, and zone gains synchronized during cooling load recalculation.
Best for: Fits when teams need geometry-linked, time-series cooling load studies across multiple design variants.
Carrier HAP
Editor pickZone-by-zone cooling load results stay traceable back to envelope, infiltration, ventilation, and internal gain inputs during every recalculation.
Best for: Fits when engineers need dependable zone load component outputs across iterative design cycles.
IDA Indoor Climate and Energy
Editor pickIndoor climate simulation ties zone conditions to cooling load generation, so HVAC control changes update both temperatures and demand in one model.
Best for: Fits when thermal zoning and HVAC control assumptions must stay consistent with cooling demand peaks.
Comparison Table
DesignBuilder
enterpriseBuilding energy simulation software with EnergyPlus engine for thermal load calculations.
3D geometry to thermal zoning linkage that keeps envelope, infiltration, and zone gains synchronized during cooling load recalculation.
DesignBuilder couples geometry and thermal zones so envelope transmission, infiltration, ventilation, and internal heat gains can flow through the same model graph. The cooling load workflow supports hourly schedules and weather-driven solar and convection effects, which is key for cooling sizing across varying outdoor conditions. Output organization supports summing zone loads to higher aggregation levels for block or plant load studies.
A tradeoff is that getting consistent results depends on disciplined model setup, especially thermal zone boundaries, construction assembly assignments, and HVAC control assumptions. A strong usage situation is iterative design work where multiple envelope variants and internal gain schedules must be compared under the same weather file and zoning structure.
- +Hour-by-hour cooling load outputs driven by zone geometry and schedules
- +Cooling load aggregation from zones to block and plant-level views
- +Envelope, infiltration, and ventilation inputs stay consistent with the 3D model
- +Repeatable studies for envelope and operating strategy comparisons
- –Results are sensitive to thermal zone boundaries and construction mapping
- –HVAC assumptions require careful setup to avoid mismatched control logic
- –Automation and API access are limited compared with fully script-first toolchains
- –Model import can require cleanup of geometry and thermal attributes
Energy modelers in design studios
Compare facade options with hour-by-hour loads
Faster variant decision-making
Commissioning-focused engineering teams
Validate cooling schedules and internal gains
More defensible design assumptions
Show 2 more scenarios
University labs and research groups
Run sensitivity studies across weather files
Clear comparison across scenarios
Weather-driven cooling load outputs support repeatable experiments on climate and operational impacts.
HVAC design engineers
Translate zone loads into plant sizing
Better sizing alignment
Aggregated zone cooling loads support system-based sizing studies for cooling plant selection.
Best for: Fits when teams need geometry-linked, time-series cooling load studies across multiple design variants.
Carrier HAP
enterpriseHourly Analysis Program for commercial HVAC system design and energy analysis.
Zone-by-zone cooling load results stay traceable back to envelope, infiltration, ventilation, and internal gain inputs during every recalculation.
Carrier HAP centers on thermal zoning and zone load calculations, with structured inputs for building envelope transmission, infiltration, ventilation, and internal gains. Outputs track envelope, internal, and ventilation components through to zone and block-level totals, which helps isolate drivers during iterative design. The tool also supports radiant and solar handling inputs that remain consistent across recalculation cycles, which matters when updating assumptions late in a project.
A key tradeoff is that deep customization often requires careful model structure, especially when translating real-world schedules and occupancy patterns into repeatable zone inputs. Carrier HAP fits best when teams run multiple design iterations for the same building geometry and want stable load component breakdowns each time, rather than when switching between radically different building concepts in a single session.
- +Component-level load breakdown from envelope to zone totals
- +Repeatable recalculation workflow for iterative HVAC design changes
- +Supports hour-by-hour style weather-driven cooling load runs
- +Structured project inputs reduce manual bookkeeping across scenarios
- –Model setup needs disciplined zoning and schedule mapping
- –Some automation requires more manual data alignment across inputs
- –Complex projects can slow down when many zones and systems are defined
- –Grid and report customization takes time for consistent deliverables
HVAC engineering design teams
Iterate cooling load by zone
Faster design decision reviews
Consulting HVAC contractors
Produce system basis of sizing
Clear sizing basis
Show 2 more scenarios
Facility energy modelers
Weather-driven cooling load analysis
More defensible seasonal loads
Run weather-driven cooling calculations to validate load trends across the year.
Architectural engineering BIM coordinators
Translate building geometry to thermal zoning
Reduced rework during revisions
Map spaces into thermal zones so loads can be recalculated when zoning changes.
Best for: Fits when engineers need dependable zone load component outputs across iterative design cycles.
IDA Indoor Climate and Energy
enterpriseBuilding simulation software for indoor climate, energy, and thermal load analysis.
Indoor climate simulation ties zone conditions to cooling load generation, so HVAC control changes update both temperatures and demand in one model.
IDA Indoor Climate and Energy uses a heat-balance style approach that connects building components to zone conditions, so zone load, ventilation effects, and envelope response are computed together rather than assembled from independent spreadsheets. It supports time-step simulations that feed peak and block-level summaries used for cooling load temperature difference evaluation and design-day comparisons. Integration is strongest when the work already lives in the IDA environment for modeling, because workflows rely on consistent model definitions across geometry, schedules, and HVAC control assumptions.
A tradeoff appears when the main goal is quick ARI-style catalog outputs with minimal model build. The modeling effort is higher than for single-step cooling load calculators, and results quality depends on how weather data, schedules, and thermal zoning are defined. IDA is a strong fit when iterative HVAC operation changes must be reflected in zone temperatures and resulting cooling demand, such as validating cooling setpoints, ventilation strategies, and control logic against zone outcomes.
- +Coupled zone and HVAC behavior keeps cooling demand consistent with indoor temperatures
- +Time-step outputs support peak checks and time series cooling load reviews
- +Works well for thermal zoning cases where infiltration and ventilation drive loads
- +Cooling load temperature difference reporting aligns with sizing-oriented workflows
- –Model setup effort is higher than simplified cooling load calculators
- –Short output-focused use cases risk spending time on control and system detail
- –Interchange is limited when teams need rapid BIM-first handoff to load-only tools
Energy engineers in design studies
Iterate cooling control and zone outcomes
Aligned peaks and temperature targets
Commissioning and performance teams
Validate ventilation-driven cooling demand
Reduced mismatch with measured behavior
Show 2 more scenarios
Facade and envelope analysts
Compare envelope variants on cooling peaks
Clear load drivers by assembly
Run envelope assembly changes and track their effect through time-step zone loads and cooling peaks.
Building simulation consultants
Create time series load reports for sizing
More defensible peak selection
Generate cooling demand summaries from time-step simulations for system-based sizing decisions.
Best for: Fits when thermal zoning and HVAC control assumptions must stay consistent with cooling demand peaks.
Cool Calc
SMBWeb-based ACCA Manual J load calculation tool for residential HVAC sizing.
Zone load reporting organizes outputs by load type with project-level reuse of schedules and space definitions.
Cool Calc is a cooling load calculation tool focused on producing zone and building load outputs from structured envelope and internal gains inputs. It supports the common workflow of defining spaces, assigning assemblies and schedules, and generating heat balance method results that include breakdowns by load type.
- +Clear zone-to-building load breakdown for people, lighting, equipment, and envelope effects
- +Repeatable project setup with reusable schedules and space definitions
- +Straightforward export-ready outputs suitable for handoff to sizing workflows
- +Usable defaults for typical design-day workflows
- –Limited automation for bulk updates across large zone counts
- –Fewer integration paths than model-driven tools that read BIM-native geometry
- –Radiant time series style outputs require additional modeling effort and detail
- –Requires careful configuration discipline for infiltration and ventilation assumptions
Best for: Fits when teams need consistent zone and peak load reporting without full BIM-to-load automation.
Wrightsoft Right-Suite Universal
SMBResidential and commercial HVAC design suite including ACCA Manual J load calculations.
Template-driven project workflows that keep weather, gain schedules, and envelope assumptions consistent across cooling load runs.
Wrightsoft Right-Suite Universal calculates cooling loads using ASHRAE-style heat balance workflows built around building thermal zoning, envelope transmission, infiltration, and internal and ventilation gains. The software focuses on repeatable results from weather data inputs and load profile assumptions, then produces zone load and block and plant load outputs for downstream system-based sizing.
- +Cooling load outputs map cleanly from zone loads to block and plant loads
- +Configurable calculation templates reduce repeated manual data entry
- +Weather data and load profile inputs stay consistent across project runs
- +Workflow checks help catch envelope and infiltration assumption mismatches early
- –Advanced automation depends on disciplined project setup and consistent templates
- –Radiant time series style workflows are less central than steady heat balance use cases
- –Some integrations require export and import steps rather than direct API chaining
- –Complex system-based sizing coverage can feel narrower than full BIM-native toolchains
Best for: Fits when teams need repeatable zoning-to-plant cooling load results with standardized assumptions.
EnergyPlus
vertical specialistOpen-source whole-building energy simulation engine developed by the US Department of Energy.
Radiant time series coupling gives detailed surface and radiation-driven zone loads for time-based cooling sizing studies.
EnergyPlus is an open-source energy simulation engine used for cooling load modeling when high-fidelity physics matter. Cooling-load workflows come from its heat balance method routines, zone-by-zone load accounting, and detailed surface and schedule inputs derived from a weather data file.
- +Time-resolved zone cooling load output enables peak and coincidence analysis
- +Heat balance method supports envelope, infiltration, ventilation, and internal loads together
- +Radiant time series modeling captures surface-to-zone heat transfer effects
- +Extensible automation via scripts and repeatable input generation
- –Input generation and model wiring require more disciplined setup than GUI-first tools
- –Cooling-load workflows often need custom post-processing to match company conventions
- –Large models can run slowly without careful run control and convergence choices
- –Strict input schema makes ad hoc changes harder without re-validation
Best for: Fits when teams need physics-grounded cooling loads and are willing to automate input and post-processing steps.
Ladybug Tools
vertical specialistOpen-source environmental analysis plugins for Grasshopper and Rhino including thermal analysis.
Grasshopper-driven heat balance workflow keeps weather, envelope, and zone definitions synchronized through a parametric graph.
Ladybug Tools centers cooling load calculation workflows around Ladybug Tools components and Grasshopper automation rather than a standalone HVAC form-based calculator. It links geometry, weather, and load assumptions through a reproducible parametric graph that can generate zone and building heat balance results from models.
- +Parametric Grasshopper graphs keep envelope and load assumptions tightly coupled
- +Weather-driven workflows support repeatable design-day iterations
- +Model-to-load iteration reduces manual re-entry between scenarios
- +Outputs are structured for downstream visualization and reporting
- –Cooling load logic depends on correct modeling conventions in the graph
- –Shared governance and audit trails are not provided in the core toolset
Best for: Fits when parametric teams need repeatable cooling load temperature difference scenarios from BIM-derived geometry.
MagiCAD Room
enterpriseCalculates room heating and cooling loads within BIM workflows for HVAC design and equipment sizing.
Geometry-linked room zoning that keeps thermal zone boundaries consistent for cooling load aggregation.
MagiCAD Room targets cooling load calculation workflows by tying room-level thermal zones to geometry and HVAC-relevant assumptions. The software supports envelope construction inputs and schedules that drive zone loads like people, lighting, and equipment, then aggregates them into zone and building totals.
- +Room and zone modeling stays aligned with geometry-driven inputs
- +Consistent aggregation from room loads to zone and building totals
- +Schedule-driven internal and envelope assumptions reduce manual recomputation
- +BIM-oriented data exchange supports faster model handoff into load work
- –Automation focus favors project setup over deep scripting control
- –Complex system-based sizing workflows can require extra modeling steps
- –Some advanced normalization like bin-method weather use needs careful setup
- –Governance features like fine-grained RBAC and audit logging are not the core differentiator
Best for: Fits when teams need room-to-zone cooling loads with geometry-linked zoning and repeatable assumptions, not heavy custom automation.
OpenStudio
API-firstProvides an open-source interface for EnergyPlus simulations that produce building heating and cooling load results.
EnergyPlus-first modeling with an editable, script-friendly input workflow for transparent cooling load assumptions.
OpenStudio calculates building energy and cooling loads using an open workflow built on the OpenStudio Application and the EnergyPlus engine. It supports thermal zoning and model assembly that feed heat balance calculations, including envelope conduction, infiltration, ventilation, internal loads, and scheduling.
- +Direct EnergyPlus object model supports detailed zone and load inputs
- +Text-based input files enable reproducible batch runs for many design days
- +Thermal zoning and schedules stay explicit instead of hidden behind forms
- +Extensibility through scripts and model generation workflows reduces manual work
- –Setup requires careful mapping of HVAC assumptions to zone-level loads
- –Radiant and plant-detail workflows can take time to configure correctly
Best for: Fits when teams need repeatable, text-driven cooling load calculations with explicit zone and schedule control.
TAS
enterpriseSimulates building thermal performance and calculates hourly heating and cooling loads for zones and systems.
Workflow-first TAS modeling that keeps envelope, internal gains, and weather conditions tightly coupled for repeatable cooling load iterations.
TAS by edsl.net targets cooling load calculation workflows that need tight control over building inputs and output reporting. It supports heat balance method style zone load generation and can structure results into usable zone and block summaries for downstream plant and airside sizing steps. The tool’s distinction is its workflow-first handling of envelope elements, schedules, and weather-driven conditions inside a repeatable model that supports re-run iterations for design-day comparisons.
- +Workflow-centered model inputs that stay consistent across repeated load runs
- +Clear separation of zone and block load outputs for review and sign-off cycles
- +Weather-driven calculations produce consistent cooling load temperature difference handling
- +Modeling discipline around schedules for people, lighting, and equipment loads
- –Less automation depth for large parametric studies than leading competitors
- –Limited built-in integration for BIM workflows compared with tools in this set
- –Requires careful configuration of envelope and infiltration loads to avoid drift
- –API surface and extensibility are not positioned for high-throughput integrations
Best for: Fits when design teams need repeatable cooling load runs with strong input control and tidy zone reporting.
Conclusion
After evaluating 10 cooling load calculation software, DesignBuilder 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.
How to Choose the Right Cooling Load Calculation Software
Cooling load calculation software is used to quantify zone, block, and building cooling demand from envelope conduction, infiltration and ventilation, internal gains, and weather-driven boundary conditions. This guide covers DesignBuilder, Carrier HAP, IDA Indoor Climate and Energy, plus other tools used for iterative cooling load studies.
The tools differ most in how they keep thermal zoning and gains synchronized across recalculations, how they generate time-step cooling load temperature differences, and how their outputs support peak and coincidence checks. Each tool review focused on those mechanics before the decision factors below.
Cooling Load Calculation Software for time-based zone and building demand
Cooling load calculation software computes cooling demand by combining heat balance method inputs such as envelope transmission, infiltration load, ventilation load, people load, lighting load, and equipment load under a chosen weather data file and design day or bin method logic. The workflow typically produces hour-by-hour or time-resolved zone results that can be aggregated into block load and plant load views.
DesignBuilder emphasizes geometry-linked thermal zoning that stays synchronized with envelope, infiltration, and zone gains during cooling load recalculation, so repeated scenarios remain consistent across design variants. Carrier HAP emphasizes traceable zone-by-zone component breakdown from envelope, infiltration, ventilation, and internal gains, which supports repeatable recalculation workflows for iterative HVAC design changes.
Cooling load calculation features that determine repeatability and auditability
Repeatable cooling load results depend on how the tool synchronizes thermal zoning with envelope, infiltration, and internal gain inputs during cooling load recalculation. This buyer guide focuses on mechanics that keep zone, block, and plant outputs traceable back to specific inputs during iterative design cycles.
Geometry-linked thermal zoning recalculation
DesignBuilder links 3D geometry to thermal zoning so envelope, infiltration, and zone gains stay synchronized during cooling load recalculation. MagiCAD Room keeps room-to-zone boundaries aligned with geometry for consistent cooling load aggregation.
Component-level load traceability per recalculation
Carrier HAP keeps zone-by-zone cooling loads traceable back to envelope, infiltration, ventilation, and internal gain inputs during every recalculation. Cool Calc organizes zone and peak reporting so load types remain separated in project-level output reuse.
Time-step coupling for peaks and coincidence checks
IDA Indoor Climate and Energy couples indoor climate to cooling load generation so HVAC control changes update temperatures and demand inside one model. EnergyPlus provides radiant time series coupling that enables peak and coincidence analysis from time-resolved zone loads.
Workflow templates and repeatable assumptions
Wrightsoft Right-Suite Universal uses template-driven workflows to keep weather, gain schedules, and envelope assumptions consistent across cooling load runs. TAS uses workflow-first modeling that maintains consistent envelope, internal gains, and weather conditions across repeated cooling load iterations.
Batch runs and text-driven input control
OpenStudio exposes an EnergyPlus-first object model with text-based input files that support reproducible batch runs across multiple design-day cases. EnergyPlus supports automation-friendly modeling and produces time-resolved outputs that feed peak coincidence checks with custom post-processing.
Parametric heat balance graph synchronization
Ladybug Tools uses Grasshopper-driven heat balance workflows so weather-driven scenarios and envelope definitions stay synchronized through a parametric graph. DesignBuilder still supports geometry-linked recalculation but shifts the synchronization mechanism toward model geometry and thermal zone mapping.
Choose based on recalculation synchronization, output traceability, and automation depth
The best choice depends on where inconsistencies usually enter the workflow: zoning boundaries, schedule mapping, and time-series output wiring. The steps below split decision paths by how teams generate cooling load temperature differences and how they keep inputs and outputs aligned when scenarios multiply.
If thermal zoning must stay tied to geometry across variants, start with geometry-linked tools
Select DesignBuilder when thermal zoning, envelope mapping, and infiltration and zone gains must stay synchronized while cooling load outputs update across multiple design variants. Select MagiCAD Room when room-to-zone boundaries and aggregation accuracy matter more than deep automation or scripting control.
If iterative HVAC design changes require strict component-level traceability, prioritize traceable recalculation workflows
Choose Carrier HAP when zone load breakdowns must remain traceable back to envelope, infiltration, ventilation, and internal gains during repeated recalculation cycles. Choose Cool Calc when zone load reporting must stay organized by load type for project-level reuse of schedules and space definitions.
If peaks and coincidence depend on coupled indoor climate and control, pick a coupled time-step approach
Choose IDA Indoor Climate and Energy when HVAC control changes must update both indoor temperatures and cooling demand inside the same model. Choose EnergyPlus when radiant time series output is required for physics-grounded cooling load temperature differences and time-based cooling sizing.
If the team standardizes assumptions through repeatable templates, select workflow-template tools
Choose Wrightsoft Right-Suite Universal when standardized weather, gain schedules, and envelope assumptions must stay consistent across repeated cooling load runs via configurable calculation templates. Choose TAS when workflow-centered modeling must keep inputs consistent across repeated load runs with clear separation of zone and block load outputs.
If the team runs many cases via text-driven or script-friendly automation, choose text-first modeling
Choose OpenStudio when batch execution and reproducible text-based workflows are required for repeated design-day cooling load calculations. Choose EnergyPlus when a flexible physics model is needed and custom post-processing is acceptable to match internal reporting conventions.
If parametric scenario generation drives the cooling load study, pick a graph-synchronized heat balance workflow
Choose Ladybug Tools when Grasshopper graphs must keep weather, envelope definitions, and heat balance assumptions synchronized through the parametric workflow. Choose DesignBuilder when geometry-linked recalculation is needed but the primary workflow is model-based rather than graph-based.
Who benefits from the different Cooling Load Calculation Software approaches
Cooling load calculation software works best when the tool aligns with the team’s failure mode: boundary errors, schedule mapping drift, or time-series wiring gaps. The segments below map common team contexts to specific tool mechanics described in the individual reviews.
Design teams running geometry-heavy iteration with multiple cooling load scenarios
DesignBuilder and MagiCAD Room fit teams that need geometry-linked thermal zoning so envelope mapping, infiltration effects, and zone gain inputs stay synchronized while cooling load results update across variants.
HVAC-focused engineers who must explain how each input component created the zone load
Carrier HAP fits teams that need component-level load breakdowns that remain traceable back to envelope, infiltration, ventilation, and internal gains during iterative HVAC design changes.
Controls and performance analysts validating peak demand and coincidence across time-step behavior
IDA Indoor Climate and Energy fits teams that require HVAC control changes to update temperatures and demand together, and EnergyPlus fits teams that need radiant time series outputs for time-based cooling sizing and coincidence checks.
BIM-adjacent workflows that prioritize room zoning consistency without deep automation scripting
MagiCAD Room fits teams that want room and thermal zone boundaries to stay aligned with geometry so aggregation from room loads to zone and building totals stays consistent.
Analysts standardizing assumptions across repeated runs using templates or workflow rules
Wrightsoft Right-Suite Universal fits teams that need template-driven project workflows to keep weather and gain schedule assumptions consistent, and TAS fits teams that rely on workflow-centered modeling to maintain repeatable load runs.
Common cooling load calculation mistakes and how to avoid them
Most cooling load calculation failures come from mismatched zoning boundaries, schedule mapping drift, or inconsistent assumptions between repeated runs. The pitfalls below target mistakes that show up repeatedly in iterative cooling load studies and design sign-off cycles.
Using inconsistent thermal zone boundaries between envelope mapping and the zone gains input set
DesignBuilder results can become sensitive when thermal zone boundaries and construction mapping do not match, so boundary checks must be part of the recalculation workflow.
Letting schedule and zoning mapping drift during iterative HVAC design changes
Carrier HAP requires disciplined zoning and schedule mapping so component-level load breakdowns stay meaningful across repeated recalculation cycles.
Running time-based peak studies without verifying that the model wiring preserves time-step behavior
EnergyPlus and IDA Indoor Climate and Energy both generate time-resolved demand, so peak and coincidence checks must be validated against the tool’s time-step cooling load generation path.
Assuming automation depth without accounting for setup effort in automation-heavy workflows
Ladybug Tools depends on correct modeling conventions inside the Grasshopper graph, and OpenStudio depends on careful mapping of HVAC assumptions to zone-level loads.
Choosing a template workflow but still customizing assumptions differently across runs
Wrightsoft Right-Suite Universal and TAS both reduce drift when templates and workflow rules are used consistently, so deviations must be tracked as explicit changes rather than ad hoc edits.
How We Selected and Ranked These Tools
We evaluated cooling load calculation tools using feature coverage for geometry-linked zoning synchronization, component-level traceability, and time-step cooling load generation, then we weighted these capabilities at 40%. We weighted ease of use and value at 30% each based on how repeatable workflows stay during iterative design runs. DesignBuilder placed at the top because geometry-linked thermal zoning keeps envelope, infiltration, and zone gains synchronized during cooling load recalculation, and because its cooling load outputs support hour-by-hour zone results that roll up to block and plant-level views without breaking traceability.
Frequently Asked Questions About Cooling Load Calculation Software
How does a heat-balance time-series workflow change cooling load results in DesignBuilder and EnergyPlus?
Which tool produces the most traceable breakdown from envelope and gain inputs to zone loads in Carrier HAP and Cool Calc?
When is IDA Indoor Climate and Energy the better choice than a workflow-first zoning tool like TAS for HVAC control studies?
What breaks if a team uses Ladybug Tools without a consistent parametric graph for cooling load temperature difference scenarios?
How do MagiCAD Room and IES VE-style geometry workflows differ for room-to-zone cooling load aggregation?
Which setup approach is better for repeatable project runs: template-driven workflows in Wrightsoft Right-Suite Universal or text-driven model control in OpenStudio?
When do integrations and API needs push a team toward DesignBuilder or OpenStudio instead of a form-based calculator?
How do security and admin controls typically differ between Ladybug Tools and Carrier HAP in shared teams?
What data migration risks appear when moving cooling load input schemas to EnergyPlus-based workflows in OpenStudio and EnergyPlus?
Tools reviewed
Primary sources checked during evaluation.
Referenced in the comparison table and product reviews above.
Funding and competing interests
This study was co-funded by several of the vendors assessed in it. No single vendor funded it. Funders could propose the market studied.
They had no role in selecting vendors, setting or weighting criteria, analysing data or drawing conclusions, and they received the same factual-accuracy check as every other vendor assessed.
Market definition, inclusion rules and criteria weights were fixed by an editor before research began and did not change afterwards. Editorial process →
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