A Open Source Mocking framework for Delphi XE2 or later
- delphi
- mocking-framework
- dpmpackage
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A Open Source Mocking framework for Delphi XE2 or later
Go Interface Mocking Tool
HTTP mock for Golang: record and replay HTTP/HTTPS interactions for offline testing
Java binding for Hoverfly
SMTP mock server written on Golang. Mimic any 📤 SMTP server behavior for your test environment with fake SMTP server.
High-performance, multi-protocol mock server. HTTP, WebSocket, gRPC, MQTT, SSE, GraphQL, SOAP in one binary.
Mockbin by Zuplo. Mock, Test, and View HTTP Requests and Responses
TestBox is a cutting-edge testing and mocking framework for the BoxLang JVM language and ColdFusion (CFML), built on Behavior-Driven Development (BDD) to offer a clear and intuitive syntax for writing tests.
FakeServer integrates with ExUnit to make external APIs testing simpler
A test-friendly replacement for golang's time package [managed by soy-programador]
DNS mock server written on 💎 Ruby. Mimic any DNS records for your test environment with fake DNS server.
💎 Ruby SMTP mock. Mimic any 📤 SMTP server behavior for your test environment with fake SMTP server.
A lightweight Snowflake emulator built with Go and DuckDB for local development and testing
Unobtrusive Dependency Injector for Elixir
Isolate tests from the real world, inspired by Ruby's VCR.
Golang HTTP client testing framework
localaik is a local compatibility server for a subset of the Gemini and OpenAI APIs. Run one container locally, point your SDK to it, and the proxy serves both protocol shapes on the same port for tests and development.
Mocker + Proxy Application
AMWA NMOS Device Control Mock Application
Simple and colorful test tools
Feature-rich filesystem mocking for Go tests: comprehensive error injection, latency simulation, write operations, operation statistics, and standalone file handles. Built on testing/fstest.MapFS with comprehensive fs.FS interface support.
Open-source simulation harness for testing AI agents. Simulate LLM and tool calls to test edge cases, failure paths, and agent logic without live API calls.
The simplest way to test your APIs and webhooks
Open-source Modbus RTU/TCP slave simulator for the LRI AEM-60DC8 industrial DC monitor — 147 holding registers, 8 DC channels, 6 baudrates. SCADA/PLC integration testing without hardware.