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Transportation LogisticsTop 9 Best Gps Splitter Software of 2026
Compare gps splitter software options and what they handle for serial and network setups. Includes a tool roundup for practical selection.
How we ranked these tools
An editor sets the topic, the inclusion criteria, and the evaluation framework before research starts.
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Framework: Features 40% · Ease 30% · Value 30%
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Serial Port Splitter is the best choice for Windows fleet backends that need multiple app consumers from one GPS serial line because its virtual COM fan-out applies per-output sentence filtering and checksum gating, whereas Signal K Server is a strong alternative for network-first setups since it fans out the same GNSS position stream via Signal K APIs using stream routing plugins.
Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
Serial Port Splitter
Multi-consumer virtual COM port fan-out with per-output sentence filtering and checksum gating.
Best for: Fits when fleet backends need multiple app consumers from one serial GPS feed on Windows.
Virtual Serial Port Driver
Editor pickPaired virtual COM port creation that preserves GPS-app compatibility without changing the reader stack.
Best for: Fits when Windows fleets need a serial-compatible input layer for an external GPS splitter or repeater.
Signal K Server
Editor pickSignal K stream routing can fan out the same position data to multiple destinations using plugin-driven inputs and outputs.
Best for: Fits when GPS data must be routed to several network clients from one GNSS source without building separate splitters.
Comparison Table
Serial Port Splitter
SMBSerial Port Splitter allows multiple applications to access data from one serial GPS connection.
Multi-consumer virtual COM port fan-out with per-output sentence filtering and checksum gating.
Serial Port Splitter is a Windows-focused GPS splitter that repackages one serial GPS feed into multiple outputs for concurrent consumers. Core capabilities center on virtual COM port remapping, baud-rate configuration, and NMEA sentence duplication with per-output filtering.
It also supports TCP GPS repeater style delivery so clients that cannot open a serial device can still receive the same stream. Checksum validation helps reject corrupted NMEA sentences before they are fanned out to downstream systems.
- +Virtual COM port replication supports multiple local applications
- +Per-output filtering reduces noise for consumer systems
- +TCP repeater output helps non-serial clients ingest GNSS data
- +Checksum validation can drop corrupted NMEA sentences
- –Primarily designed for Windows COM workflows
- –Complex multi-output setups need careful port and baud planning
- –No built-in coordinate-system conversion layer for GNSS formats
- –Latency monitoring and failover controls are limited
Best for: Fits when fleet backends need multiple app consumers from one serial GPS feed on Windows.
Virtual Serial Port Driver
SMBVirtual Serial Port Driver creates virtual COM-port connections for routing GPS data between applications.
Paired virtual COM port creation that preserves GPS-app compatibility without changing the reader stack.
Virtual Serial Port Driver is a Windows-focused virtual COM port utility that can act as a serial-to-network bridge input layer for GPS splitting workflows. It creates paired virtual ports that NMEA-capable tools can read, then forwards data to TCP or UDP repeaters depending on the integration used.
The main distinction is tight control over COM port pairing, baud-rate behavior, and how applications perceive the data stream as if it came from a physical GPS receiver. It is often used to build a GNSS data fan-out path where multiple downstream clients consume one upstream serial feed.
- +Creates paired virtual COM ports for software that expects serial GPS input
- +Consistent baud-rate configuration so downstream readers receive predictable streams
- +Works well as an integration layer before TCP or UDP GPS distribution tools
- +Low-friction setup for lab and field testing of GPS parsing pipelines
- –Does not provide an end-to-end GPS splitter, so sentence-level fan-out is external
- –Thin tooling for checksum validation and NMEA sentence filtering inside the driver layer
- –Windows-only use can add friction for Linux-based GPS gateway deployments
- –Automation and API surface for provisioning virtual ports is limited
Best for: Fits when Windows fleets need a serial-compatible input layer for an external GPS splitter or repeater.
Signal K Server
vertical specialistSignal K Server collects marine navigation data and distributes GPS information through network APIs.
Signal K stream routing can fan out the same position data to multiple destinations using plugin-driven inputs and outputs.
Signal K Server runs as an NMEA and sensor data hub that can split GNSS sentences to multiple outputs using its configurable streaming and plugin architecture. It supports GPS data fan-out over network sockets so the same position stream can feed separate applications like charting, logging, and vehicle telemetry.
Configuration is driven by Signal K’s data model and feed routing so outputs can be enabled per stream without writing protocol conversion code. It also fits edge deployments where serial inputs and network clients must stay connected reliably during normal operations.
- +Data routing is handled through Signal K streams instead of custom protocol scripts
- +Network distribution supports multiple consumers from the same GNSS input
- +Plugin-based inputs and outputs fit mixed sensor and GPS source environments
- +Works well for serial-to-network bridges with predictable data fan-out
- –Advanced routing requires familiarity with Signal K stream configuration
- –Latency monitoring and failover behavior depend on external client or deployment patterns
- –Coordinate conversion and checksum validation are not the primary focus of the server core
- –Serial integration depth varies by input plugins and their device support
Best for: Fits when GPS data must be routed to several network clients from one GNSS source without building separate splitters.
VSPE
SMBVirtual serial port emulator that splits and shares COM port data among multiple applications.
COM port remapping plus virtual serial duplication for GPS receiver sharing across multiple Windows processes.
VSPE from eterlogic centers on Windows virtual serial port splitting and remapping, which fits workflows that need GPS devices to appear as multiple independent COM endpoints. Its core mechanism is a virtual COM port layer that can duplicate, redirect, and manage serial data paths for NMEA-style GPS streams.
- +Virtual COM port remapping keeps GPS apps isolated per process
- +Serial-to-virtual routing enables deterministic GPS feed duplication
- +Explicit COM and baud configuration supports legacy GPS receivers
- +Works well for lab setups that need repeatable GPS input wiring
- –NMEA splitting and failover require external app or scripting work
- –Throughput limits depend on host Windows serial stack and drivers
- –No native TCP or UDP GPS repeater mode for GPS over IP use cases
- –Complex fan-out chains can become hard to govern across many ports
Best for: Fits when Windows deployments need serial-based GPS data fan-out to multiple COM-only applications.
VisualGPS
vertical specialistWindows application that monitors and logs NMEA data from GPS receivers with serial and TCP connectivity.
Sentence-level validation paired with per-output mapping to NMEA consumers in a single configuration workflow.
VisualGPS is a fit when one GPS source must feed several clients that each expect their own socket or device-like stream. The configuration flow emphasizes per-output mapping so operators can duplicate the same data stream into multiple recipients without manually building separate relays. Visual validation features like checksum and sentence-level handling reduce the chance that downstream parsers fail on malformed NMEA records. It is also well suited for Windows GPS splitter setups where serial access is easier to centralize than to duplicate per application.
- +Visual configuration reduces per-output routing mistakes
- +Checksum and sentence integrity checks improve downstream compatibility
- +Multi-consumer duplication avoids running multiple separate gateways
- +Works well for Windows-focused GPS splitting setups
- –Less suited for large output counts with high throughput needs
- –Limited support for advanced protocol translation beyond NMEA fan-out
- –Failover behavior is not as configurable as dedicated gateway stacks
Best for: Fits when one GPS feed must be replicated to several NMEA consumers on Windows without custom relay code.
Techsail NMEA Server
vertical specialistSoftware NMEA 0183 multiplexer that transmits serial GPS and AIS data as TCP/IP packets.
Server-side sentence fan-out that delivers NMEA feeds to multiple TCP clients with checksum validation.
Techsail NMEA Server is a GPS splitter software focused on taking NMEA input from one or more GNSS sources and distributing sentences to multiple clients over the network. It is built around an NMEA 0183 oriented pipeline with explicit sentence handling, including checksum validation and routing into per-client outputs.
- +NMEA sentence distribution to multiple network clients
- +Checksum validation reduces corrupted sentence propagation
- +Configurable routing supports per-output remapping
- +Good fit for serial-to-network bridge gateway deployments
- –Limited visibility into per-client latency and loss metrics
- –Advanced configurations require careful setup discipline
- –No native coordinate-system conversion workflow
- –Thin support for NMEA 2000 gateway style inputs
Best for: Fits when teams need a gateway that fans out NMEA sentences to multiple TCP clients with checksum checks.
Eltima Virtual Serial Port Driver
SMBCreates virtual copies of GPS serial ports to split data to multiple applications simultaneously.
Virtual COM endpoint creation that lets separate applications attach to the same GPS serial source.
Eltima Virtual Serial Port Driver can create virtual COM ports so software that expects a physical GPS serial device can connect without hardware sharing. It supports COM port creation and configuration so applications can attach to different endpoints while the driver handles the underlying byte flow. Automation is achieved through persistent port settings and service-style operation rather than an application-layer GPS parser.
- +Creates persistent virtual COM endpoints for multi-client serial reads
- +Configurable serial parameters per virtual port instance
- +Works with existing GPS TCP or UDP repeaters without driver changes
- +Windows-focused deployment fits common GPS gateway stacks
- –No native NMEA parsing, so it cannot split sentences by content
- –Sharing is byte-stream based, so clients must handle duplicates
- –Virtual COM design depends on compatible serial libraries in each app
- –Configuration discipline is needed to avoid mismatched baud settings
Best for: Fits when multiple Windows apps must read the same NMEA 0183 stream as separate COM devices.
XPORT
vertical specialistGPS data distribution and COM port sharing software for multi-receiver GNSS installations.
Correction-stream distribution from the same upstream GNSS feed to multiple downstream consumers.
XPORT is used to replicate the same GNSS stream to multiple downstream applications without each application needing direct device access. It supports serial-to-network bridging patterns where a single receiver or serial source is exposed over IP so remote clients can consume it. It also accommodates multi-client setups where each client expects a consistent framing and checksum behavior for NMEA 0183 messages.
- +Multi-output fan-out from one GNSS input for several client apps
- +Serial-to-network bridging pattern supports remote consumption via IP
- +Correction stream distribution keeps differential workflows consistent
- +Message validation behavior helps maintain NMEA 0183 sentence integrity
- –Adds an extra network hop that affects latency under load
- –Correct endpoint pairing and port mapping requires careful configuration
- –Throughput tuning is needed for high sentence rate receivers
Best for: Fits when one GNSS source must feed multiple Windows and Linux consumers reliably.
Kplex
vertical specialistMultitransport NMEA-0183 software multiplexer for Linux, macOS, and BSD with serial and network I/O.
Checksum validation on forwarded NMEA traffic reduces bad-data propagation to downstream GPS clients.
Kplex from stripydog.com targets GPS over IP and serial-to-network use cases where multiple devices or software stacks must receive the same GNSS feed. It focuses on TCP and UDP GPS repeater behavior and lets operators control NMEA sentence forwarding with checksum checks to avoid propagating corrupted frames.
- +TCP and UDP repeater mode supports direct GPS over IP fan-out
- +Checksum validation filters malformed NMEA sentences before forwarding
- +Multi-client distribution reduces pressure on the upstream receiver
- +Windows-oriented operation fits common on-prem GPS gateway setups
- –Does not cover NMEA 2000 bridging workflows seen in higher-ranked tools
- –Serial interface mapping needs careful configuration to avoid virtual COM conflicts
- –Limited automation surface compared with products that add API provisioning
- –Latency monitoring and failover features are not as granular as top picks
Best for: Fits when a Windows GPS gateway must repeat one receiver feed to several IP clients.
Conclusion
After evaluating 9 gps splitter software, Serial Port Splitter 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 Gps Splitter Software
GPS splitter software routes one GNSS or GPS feed into multiple downstream consumers through virtual COM endpoints, sentence-level filtering, or TCP and UDP repeaters. This guide covers XPORT, VisualGPS, Eltima Virtual Serial Port Driver, Serial Port Splitter, Signal K Server, Virtual Serial Port Driver, VSPE, Techsail NMEA Server, Heppenstall NMEA Client, and Kplex.
The picks differ by how they validate or partition NMEA sentences, how they duplicate or replicate serial streams for multiple Windows processes, and how they behave under load when fan-out adds a network hop. XPORT ranks first for multi-output distribution from one upstream GNSS feed to multiple consumers using a serial-to-network bridge pattern.
GPS Splitter Software for GNSS fan-out to virtual COM and network clients
GPS splitter software takes an incoming GPS or GNSS stream and delivers it to multiple endpoints, either as virtual serial interfaces on Windows or as NMEA over IP outputs to TCP and UDP clients. Some tools handle sentence integrity checks and per-output mapping, while others focus on reliable serial sharing that keeps the reader stack unchanged.
XPORT is built for correction-stream distribution and multi-output fan-out from a single upstream feed to multiple downstream consumers, with IP delivery enabled by its serial-to-network bridging approach. VisualGPS couples sentence-level validation with per-output mapping so a single configuration workflow can replicate one GPS feed across multiple NMEA consumers without custom relay scripts.
GPS Splitter Software features that change routing correctness
Routing correctness depends on how each tool validates and gates NMEA sentence integrity before duplicating output to multiple consumers. Those integrity checks change downstream behavior because corrupted or incomplete sentences propagate differently across virtual COM duplication and NMEA over IP fan-out.
Multi-output fan-out with checksum and endpoint mapping
XPORT distributes correction-stream data from one upstream GNSS feed to multiple downstream consumers using a serial-to-network bridge pattern. VisualGPS pairs sentence-level validation with per-output mapping inside its single configuration workflow.
Per-output filtering and sentence integrity gates
Serial Port Splitter applies per-output sentence filtering and checksum gating while replicating virtual COM ports for multiple local apps. Kplex performs checksum validation on forwarded NMEA traffic to reduce malformed sentence propagation to IP clients.
Virtual COM duplication for multi-client serial reads on Windows
Eltima Virtual Serial Port Driver creates persistent virtual COM endpoints so separate Windows applications can attach to the same GPS serial source. VSPE remaps COM routing to isolate GPS apps per process while enabling deterministic duplication to multiple consumers.
Server-side NMEA distribution over TCP to multiple clients
Techsail NMEA Server delivers NMEA sentences to multiple TCP clients with checksum validation in the gateway process. Heppenstall NMEA Client manages per-client output endpoint attachment so separate TCP or UDP endpoints do not compete for the same input socket.
Stream routing through Signal K rather than custom protocol splitting
Signal K Server routes the same position data to multiple destinations using Signal K stream inputs and outputs controlled by plugins. This approach shifts routing configuration from NMEA-specific splitting to stream-oriented distribution.
Choose a GPS splitter by input-to-output architecture and failure behavior
Selection should start with the required architecture because some tools duplicate serial access for local Windows apps while others fan out NMEA over IP sockets. After architecture, the next fork is whether routing correctness depends on sentence-level validation inside the splitter or on downstream client handling after byte-stream replication.
Pick the distribution path that matches the consumer type
Use XPORT when one upstream GNSS feed must feed multiple downstream consumers through a serial-to-network bridge pattern for remote consumption. Use Eltima Virtual Serial Port Driver or VSPE when multiple Windows applications require distinct COM endpoints that read the same underlying GPS serial stream.
Decide where correctness checks should occur
Choose VisualGPS or Serial Port Splitter when sentence integrity checks and per-output routing are needed inside the gateway configuration workflow. Choose Techsail NMEA Server or Kplex when checksum validation must run in the server-side repeater before network clients receive forwarded sentences.
Validate throughput and output-count expectations early
Use XPORT or VisualGPS for multi-consumer use where an extra network hop is acceptable under expected load. Avoid Techsail NMEA Server for scenarios that need detailed per-client latency and loss metrics since that visibility is limited in its feature set.
Plan for failover and latency monitoring responsibilities
Choose tools where failover behavior is predictable for the deployment pattern since Signal K Server states that latency monitoring and failover behavior depend on external client or deployment patterns. If the deployment cannot tolerate undefined reconnection behavior, prefer splitters that keep routing deterministic for their targeted Windows serial or TCP fan-out workflow.
Confirm protocol scope against the actual payloads on the wire
Use VisualGPS or XPORT when the goal is NMEA fan-out with validation and mapping to downstream consumers. Use Signal K Server only when Signal K stream routing can represent the required payloads, since it is designed around Signal K stream inputs and outputs rather than native NMEA sentence splitting.
Who needs GPS Splitter Software and what each role is optimizing
GPS splitter software is most useful when one GNSS receiver feed must support multiple software consumers without duplicating hardware. The right choice depends on whether consumers sit on the same Windows host via virtual COM endpoints or across a network via TCP or UDP repeaters.
Fleet backends running multiple Windows apps from a single receiver
Teams using Serial Port Splitter or Eltima Virtual Serial Port Driver can replicate the same GPS serial source into multiple local consumers with per-port control. The virtual COM model avoids reconfiguring each GPS app to share a single serial handle.
Operations teams distributing one GNSS correction-capable feed to multiple downstream sites
XPORT targets multi-output distribution from one upstream GNSS feed to multiple downstream consumers using a serial-to-network bridge pattern. The correction-stream distribution approach aligns with repeatable delivery to remote clients.
Software groups building TCP client integrations for position or NMEA telemetry
Techsail NMEA Server provides server-side NMEA sentence fan-out to multiple TCP clients with checksum validation. Heppenstall NMEA Client supports multiple independent output destinations so multiple apps can attach to dedicated sockets.
Signal K deployments that already standardize data via Signal K streams
Signal K Server routes the same position data to multiple destinations using Signal K stream inputs and outputs controlled by plugins. This fits when the system architecture already speaks Signal K.
Common GPS splitter mistakes that cause bad data or broken connections
Most failures come from mismatched assumptions about sentence validation, output count, and the splitting responsibility between the splitter and the client apps. Another frequent issue is choosing a serial-only virtual COM tool when the required architecture needs server-side fan-out to multiple network clients with measured delivery behavior.
Using a virtual COM driver for content-based splitting when only byte-stream duplication exists
Eltima Virtual Serial Port Driver creates virtual COM endpoints but it does not provide native NMEA parsing, so it cannot split sentences by content. Pair such tools with downstream logic that can handle duplicates and filtering needs, or switch to VisualGPS or Serial Port Splitter when sentence-level gating is required.
Overlooking the operational cost of extra network hops under load
XPORT uses a serial-to-network bridging pattern that can add latency under load when multiple consumers depend on network delivery. If tight timing is required, validate throughput expectations early with the intended output count.
Expecting checksum validation and per-client visibility to be complete for network fan-out
Techsail NMEA Server includes checksum validation for forwarded NMEA sentences, but it provides limited visibility into per-client latency and loss metrics. If monitoring is a hard requirement, plan for external client telemetry or choose a tool whose behavior is clearer for the chosen deployment pattern.
Configuring output endpoints without careful port or socket planning
Heppenstall NMEA Client isolates each consumer with dedicated per-client output endpoints so clients do not compete for the same socket. When endpoint mapping is careless, multiple clients can end up competing for the same stream source.
Assuming the splitter handles non-NMEA payload types without a compatible routing path
Heppenstall NMEA Client is limited for non-NMEA payloads like RTCM correction streams, so it will not cover those workflows by default. Use XPORT when correction-stream distribution from the same upstream GNSS feed is the requirement.
How We Selected and Ranked These Tools
We evaluated XPORT, VisualGPS, Eltima Virtual Serial Port Driver, Serial Port Splitter, Signal K Server, Virtual Serial Port Driver, VSPE, Techsail NMEA Server, Heppenstall NMEA Client, and Kplex using feature coverage, ease of configuration, and value for the intended routing model. Features accounted for 40% of the scoring because sentence validation and per-output mapping decide downstream data integrity across multiple consumers.
Ease of use accounted for 30% of the scoring because Windows virtual COM workflows and server endpoint setup time determine deployment friction. Value accounted for 30% of the scoring because XPORT’s correction-stream distribution from one upstream GNSS feed to multiple downstream consumers via a serial-to-network bridge pattern creates higher output utility per deployment than tools that focus on narrower duplication or weaker validation workflows.
Frequently Asked Questions About Gps Splitter Software
What is the core difference between XPORT and Serial Port Splitter when splitting GNSS data?
Which tool fits a Windows workflow where multiple apps must open separate COM ports that read the same GPS stream?
How does VisualGPS handle sentence integrity compared with Techsail NMEA Server?
When should a team choose Signal K Server over a dedicated GPS splitter like Heppenstall NMEA Client?
What breaks if checksum validation is disabled in a TCP fan-out design like Kplex or Techsail NMEA Server?
How do Virtual Serial Port Driver and VSPE differ in their approach to virtual COM ports for GPS splitting?
Which tool is better for distributing a correction stream to multiple receivers from one GNSS source?
How does Heppenstall NMEA Client manage independent consumer endpoints when multiple apps need the same NMEA feed?
What tradeoff exists between using Serial Port Splitter on Windows versus using a network-oriented gateway like Signal K Server?
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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