API Development & Testing
Compare healthier or more active tools in the same use case using ToolVitals public evidence.
Why compare
Switching guide
Stronger current public-health signal than Traefik.
Useful when portability and inspectability matter.
Ranked alternatives
Python SDK, Proxy Server (AI Gateway) to call 100+ LLM APIs in OpenAI (or native) format, with cost tracking, guardrails, loadbalancing and logging. [Bedrock, Azure, OpenAI, VertexAI, Cohere, Anthropic, Sagemaker, HuggingFace, VLLM, NVIDIA NIM]
A unified AI model hub for aggregation & distribution. It supports cross-converting various LLMs into OpenAI-compatible, Claude-compatible, or Gemini-compatible formats. A centralized gateway for personal and enterprise model management. π₯
Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)
The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.
REST API for any Postgres database
OpenAPI code generator for API clients, server stubs, and documentation.
Open-source platform for creating safe, isolated production sandboxes for API, integration, and E2E testing.
The Cloud-Native API Gateway and AI Gateway
Scalar is an open-source API platform:γγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγπ Modern REST API Clientγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγπ Beautiful API Referencesγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγβ¨ 1st-Class OpenAPI/Swagger Support
π€ AI Gateway | AI Native API Gateway
Test Automation Made Simple
Fastest enterprise AI gateway (50x faster than LiteLLM) with adaptive load balancer, cluster mode, guardrails, 1000+ models support & <100 Β΅s overhead at 5k RPS.