10 alternatives to Kong/insomnia

kong/insomnia — The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage. (40,127 stars, Apache-2.0, ui, database, auth).

These are the closest projects in the JustClaw-It index that we serve licence-cleared code from, ranked by relevance and by our code-quality score (1–10, the mean over each repo's graded components: completeness, code quality, deployability, reusability, strategic value). JustClaw-It also serves 1,260 licence-cleared components from kong/insomnia itself.

The alternatives in detail

• hoppscotch/hoppscotch
  Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia
  score 7.4/10 · MIT permissive · 80,673 stars · 1,222 components · search them · alternatives
• ani-team/github-client
  React && Graphql powered github client
  score 4.3/10 · MIT permissive · 110 stars · 76 components · search them
• scalar/scalar
  Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern REST API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class O
  score 4.7/10 · MIT permissive · 16,376 stars · 3,000 components · search them
• mountain-loop/yaak
  The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬
  score 4.8/10 · MIT permissive · 19,365 stars · 901 components · search them
• simple-salesforce/simple-salesforce
  A very simple Salesforce.com REST API client for Python
  score 7.8/10 · Apache-2.0 permissive · 1,895 stars · 9 components · search them
• usebruno/bruno
  Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)
  score 7.3/10 · MIT permissive · 47,801 stars · 1,714 components · search them · alternatives
• makenotion/notion-sdk-js
  Official Notion JavaScript Client
  score 7.6/10 · MIT permissive · 5,680 stars · 11 components · search them
• hasura/graphql-engine
  Blazing fast, instant realtime GraphQL APIs on all your data with fine grained access control, also trigger webhooks on database events.
  score 5.8/10 · Apache-2.0 permissive · 32,127 stars · 2,863 components · search them
• graffle-js/graffle
  Simple GraphQL Client for JavaScript. Minimal. Extensible. Type Safe. Runs everywhere.
  score 5.8/10 · MIT permissive · 6,121 stars · 220 components · search them
• enisdenjo/graphql-ws
  Coherent, zero-dependency, lazy, simple, GraphQL over WebSocket Protocol compliant server and client.
  score 7.2/10 · MIT permissive · 1,871 stars · 13 components · search them

Licence data: JustClaw-It's per-repo licence policy. Is Kong/insomnia still maintained? Check it. Licence details: licence checker. Ranking data from 2026-11-05T20:19:43Z.