API Development & Testing

Alternatives to Insomnia

Compare healthier or more active tools in the same use case using ToolVitals public evidence.

View Insomnia profile View API Development & Testing leaderboard

Why compare

Signals behind this alternatives page

Commit continuity, contributor activity, and delivery signals are strong.
Health score: 97/100.
Shipping score: 96/100.

Switching guide

Best alternatives by need

Best overallTraefik

Highest organic ToolVitals fit for this use case.

Healthier optionsTraefik, LiteLLM, new-api, Bruno

Stronger current public-health signal than Insomnia.

Verified open/source-visibleTraefik, LiteLLM, new-api, Bruno

Useful when portability and inspectability matter.

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Ranked alternatives

Best-fit api development & testing options

12 tools

Traefik

The Cloud Native Application Proxy

Active

Health97

Shipping96

Score97

Confidence90

Stars64.8k

ModeSource-visible project

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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]

Active

Health98

Shipping99

Score99

Confidence90

Stars58.6k

ModeSource-visible project

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new-api

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. 🍥

Active

Health98

Shipping97

Score97

Confidence90

Stars48.1k

ModeSource-visible project

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Bruno

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

Active

Health97

Shipping97

Score97

Confidence90

Stars46.9k

ModeSource-visible project

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PostgREST

REST API for any Postgres database

Active

Health95

Shipping95

Score95

Confidence90

Stars27.7k

ModeSource-visible project

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OpenAPI Generator

OpenAPI code generator for API clients, server stubs, and documentation.

Active

Health96

Shipping95

Score96

Confidence90

Stars26.7k

ModeLibrary / Framework

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Keploy

Open-source platform for creating safe, isolated production sandboxes for API, integration, and E2E testing.

Active

Health97

Shipping95

Score96

Confidence90

Stars18.5k

ModeSource-visible project

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Apache APISIX

The Cloud-Native API Gateway and AI Gateway

Active

Health96

Shipping96

Score96

Confidence90

Stars17.1k

ModeSource-visible project

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Scalar

Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern REST API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class OpenAPI/Swagger Support

Active

Health97

Shipping97

Score97

Confidence90

Stars16.1k

ModeSource-visible project

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Higress

🤖 AI Gateway | AI Native API Gateway

Active

Health96

Shipping94

Score95

Confidence90

Stars9.4k

ModeSource-visible project

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Karate

Test Automation Made Simple

Active

Health94

Shipping95

Score95

Confidence90

Stars9k

ModeSource-visible project

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Bifrost

Fastest enterprise AI gateway (50x faster than LiteLLM) with adaptive load balancer, cluster mode, guardrails, 1000+ models support & <100 µs overhead at 5k RPS.

Active

Health98

Shipping98

Score98

Confidence90

Stars8.1k

ModeSource-visible project

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