The complete load testing platform. Everything you need for production-grade load tests. Serverless & distributed. Load test with Playwright. Load test HTTP APIs, GraphQL, WebSocket, and more. Use any Node.js module.
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MockServer is an HTTP(S) mock server and proxy for testing that lets you mock APIs, inspect and modify live traffic, and inject failures. It supports HTTP/1.1, HTTP/2, gRPC, WebSockets, TCP and more on a single port, with additional support for HTTP/3, message brokers, and AI/LLM APIs.
- mock-server
- proxy
- java-client
- javascript-client
Catch API bugs before your users do
Fortio load testing library, command line tool, advanced echo server and web UI in go (golang). Allows to specify a set query-per-second load and record latency histograms and other useful stats.
- golang
- golang-library
- golang-application
- performance
Simple gRPC benchmarking and load testing tool
- grpc
- hacktoberfest
A contract-driven gRPC regression harness for AI coding agents, with human-approved baselines. Snapshot the valid call chains of an API so an agent can look one up instead of tracing for it. gRPC today, OpenAPI next
Automated API Testing and Quality Assurance
Fast, native API client for REST, gRPC, WebSocket and GraphQL. A local-first Postman alternative written in Go: no Electron, no account, no cloud.
Scriptable, multipurpose mock server. Run standalone mock servers, or embed mocks within your tests or CI/CD pipeline.
Shift-left API Integration | Auto-fix integration drift before integration. Specmatic turns API specifications into executable contracts, continuously verifying that every change made by AI coding agents and engineers stays true to the desired behaviour. Ship AI-ready APIs 10x faster, from intent to implementation, with Spec-Driven API Development.
- contract-testing
- microservices
- contract-driven-development
- cdd
Hardware testing for the software world. Real or virtual, local or remote, human, automated or agentic.
- hardware
- hardware-in-the-loop
- hil
- testing-framework
High-performance, multi-protocol mock server. HTTP, WebSocket, gRPC, MQTT, SSE, GraphQL, SOAP in one binary.
- api-mocking
- cli
- developer-tools
- golang
A JMeter plugin supports load test gRPC
- jmeter-plugin
- benchmark
- load-testing
- grpc
Ultimate tool to measure gRPC service coverage from tests
- coverage
- coverage-report
- coverage-testing
- go