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MLLPong

MLLPong

A lightweight mock server for HL7 v2 messages over MLLP

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Launched May 1, 2026
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About MLLPong

MLLPong is a lightweight and versatile mock server designed specifically for HL7 v2 messages transmitted over MLLP (Minimum Lower Layer Protocol). It enables developers and healthcare IT professionals to simulate HL7 message exchanges efficiently, making it ideal for testing, development, and integration scenarios. What sets MLLPong apart is its ability to handle always-ACK, always-NACK responses, or apply rule-based smart handlers, allowing for flexible and realistic message simulation. Its simplicity and focus on HL7 protocols make it a valuable tool for those working in healthcare software development, enabling faster testing cycles and reducing dependency on real healthcare systems. Whether you're developing new HL7 integrations or testing hospital information systems, MLLPong offers a straightforward, reliable solution to streamline your workflow.

Screenshots

MLLPong screenshot 1
MLLPong screenshot 2

Pros

  • ✓Lightweight and easy to set up, requiring minimal configuration
  • ✓Supports rule-based smart handlers for customized message responses
  • ✓Offers always-ACK and always-NACK modes for testing different scenarios
  • ✓Specifically tailored for HL7 v2 over MLLP, ensuring protocol accuracy
  • ✓Useful for rapid development and testing in healthcare IT projects

Cons

  • ✗Limited to HL7 v2 messages over MLLP, not supporting other protocols or versions
  • ✗May lack advanced features found in more comprehensive HL7 testing tools
  • ✗No built-in GUI, which could be a hurdle for less technical users

Use Cases

1Testing HL7 v2 message exchanges between healthcare systems
2Simulating HL7 message workflows during software development
3Validating hospital information system integrations
4Training healthcare IT staff on HL7 message handling
5Developing and testing middleware and interfaces
6Creating reliable mock environments for HL7 communication

Pricing

Likely available as a free or open-source tool, given its specificity and focus on developer testing. There may be premium support or additional features in paid plans, but basic usage is probably free.

Quick Info

Category💻 Developer Tools
Upvotes0
Comments1
Launched5/1/2026

Topics

Software EngineeringDeveloper ToolsGitHub

Alternatives

•HL7 Simulator
•Mirth Connect
•HAPI HL7
•Corepoint Integration Engine
•Rhapsody Integration Engine

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