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10 top picks · 2 audience rankings

Best open source API management tools

The best open source API management tool is Hoppscotch Community Edition (MIT, 80,706 GitHub stars, Docker image). Bruno stands out for a permissive MIT license, and PostgREST stands out for its Haskell codebase.

This page also breaks the picks down by team size and use: Hoppscotch Community Edition leads for startups, enterprise and solo developers.

Updated · data from GitHub, refreshed daily

Top picks

  1. Rank 1:

    Hoppscotch Community Edition

    hoppscotch/hoppscotch

    Fast and beautiful API request builder.

    Active · last commit Oct 26, 2026

    API ManagementTypeScriptDocker

    Stands out for the most GitHub stars. Hoppscotch Community Edition has 80,706 GitHub stars, uses the MIT license, ships a Docker image and had 311 commits in the last year; it replaces Postman.

  2. Rank 2:

    Bruno

    usebruno/bruno

    Fast, git-friendly open-source API client, an alternative to Postman.

    Active · last commit Oct 28, 2026

    API ManagementJavaScript

    Stands out for a permissive MIT license. Bruno has 47,893 GitHub stars, uses the MIT license and had 1,664 commits in the last year; it replaces Postman.

  3. Rank 3:

    PostgREST

    PostgREST/postgrest

    Serves a fully RESTful API from any existing PostgreSQL database.

    Active · last commit Oct 26, 2026

    API ManagementHaskellDocker

    Stands out for its Haskell codebase. PostgREST has 27,732 GitHub stars, uses the MIT license, ships a Docker image and had 659 commits in the last year.

At a glance

Open source API management tools compared

Ranked on GitHub stars, commits in the last year, Docker images, open-source licenses and recent commits across the 17 apps in the API management category. Projects with fewer than 12 commits in the last 12 months rank below every more active project.

Top 10 picks compared, data as of Oct 28, 2026
AppStands out forLicenseGitHub starsCommits (12 mo)Last commitDocker image
Hoppscotch Community Editionthe most GitHub starsMIT80,706311Oct 26, 2026Yes
Brunoa permissive MIT licenseMIT47,8931,664Oct 28, 2026No
PostgRESTits Haskell codebaseMIT27,732659Oct 26, 2026Yes
Opikthe most commits in the last 12 months (4,455)Apache-2.022,9804,455Oct 28, 2026Yes
Hasuraa permissive Apache-2.0 licenseApache-2.032,124336Oct 28, 2026Yes
Composio–MIT30,7834,817Oct 28, 2026No
Apache APISIX–Apache-2.017,259630Oct 28, 2026Yes
Kong–Apache-2.044,31134Oct 19, 2026Yes
Tyk–MPL-2.010,870356Oct 27, 2026Yes
Svix–MIT3,465763Oct 28, 2026Yes

1 of 3 · 10 picks

Top picks

10 of the 17 apps in the API management category.

  1. 1

    Hoppscotch Community Edition

    Fast and beautiful API request builder.

    Stands out for the most GitHub stars. Hoppscotch Community Edition has 80,706 GitHub stars, uses the MIT license, ships a Docker image and had 311 commits in the last year; it replaces Postman.

  2. 2

    Bruno

    Fast, git-friendly open-source API client, an alternative to Postman.

    Stands out for a permissive MIT license. Bruno has 47,893 GitHub stars, uses the MIT license and had 1,664 commits in the last year; it replaces Postman.

  3. 3

    PostgREST

    Serves a fully RESTful API from any existing PostgreSQL database.

    Stands out for its Haskell codebase. PostgREST has 27,732 GitHub stars, uses the MIT license, ships a Docker image and had 659 commits in the last year.

  4. 4

    Opik

    Evaluate, test, and ship LLM applications with a suite of observability tools to calibrate language model outputs across your dev and production lifecycle.

    AI-nativeStands out for the most commits in the last 12 months (4,455). Opik has 22,980 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 4,455 commits in the last year.

  5. 5

    Hasura

    Fast, instant realtime GraphQL APIs on Postgres with fine grained access control, also trigger webhooks on database events.

    Stands out for a permissive Apache-2.0 license. Hasura has 32,124 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 336 commits in the last year.

  6. 6

    Composio

    Integration platform for AI agents & LLMs with support for 250+ apps and custom tools.

    AI-nativeComposio has 30,783 GitHub stars, uses the MIT license and had 4,817 commits in the last year.

  7. 7

    Apache APISIX

    Dynamic, high-performance cloud-native API gateway.

    Apache APISIX has 17,259 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 630 commits in the last year.

  8. 8

    Kong

    Microservice API Gateway and Platform.

    Kong has 44,311 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 34 commits in the last year; it replaces Postman.

  9. 9

    Tyk

    Fast and scalable open source API Gateway. Out of the box, Tyk offers an API Management Platform with an API Gateway, API Analytics, Developer Portal and API Management Dashboard.

    Tyk has 10,870 GitHub stars, uses the MPL-2.0 license, ships a Docker image and had 356 commits in the last year.

  10. 10

    Svix

    Webhooks as a service that makes it super easy for API providers to send webhooks.

    Svix has 3,465 GitHub stars, uses the MIT license, ships a Docker image and had 763 commits in the last year.

2 of 3 · 5 picks

Which open source API management tool is best for startups and solo developers?

For startups and solo developers, Hoppscotch Community Edition ranks first (MIT, 80,706 GitHub stars), followed by PostgREST and Opik. Ranked for startups and solo developers (the same order for each) on GitHub stars, commits in the last year, Docker images, open-source licenses and recent commits.

  1. 1

    Hoppscotch Community Edition

    Fast and beautiful API request builder.

    Hoppscotch Community Edition has 80,706 GitHub stars, uses the MIT license, ships a Docker image and had 311 commits in the last year; it replaces Postman. For startups it also scores on a Docker image, a permissive license (MIT), a project website and a commit in the last 90 days.

  2. 2

    PostgREST

    Serves a fully RESTful API from any existing PostgreSQL database.

    PostgREST has 27,732 GitHub stars, uses the MIT license, ships a Docker image and had 659 commits in the last year. For startups it also scores on a Docker image, a permissive license (MIT), a project website and a commit in the last 90 days.

  3. 3

    Opik

    Evaluate, test, and ship LLM applications with a suite of observability tools to calibrate language model outputs across your dev and production lifecycle.

    AI-nativeOpik has 22,980 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 4,455 commits in the last year. For startups it also scores on a Docker image, a permissive license (Apache-2.0), a project website and a commit in the last 90 days.

  4. 4

    Hasura

    Fast, instant realtime GraphQL APIs on Postgres with fine grained access control, also trigger webhooks on database events.

    Hasura has 32,124 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 336 commits in the last year. For startups it also scores on a Docker image, a permissive license (Apache-2.0), a project website and a commit in the last 90 days.

  5. 5

    Bruno

    Fast, git-friendly open-source API client, an alternative to Postman.

    Bruno has 47,893 GitHub stars, uses the MIT license and had 1,664 commits in the last year; it replaces Postman. For startups it also scores on a permissive license (MIT), a project website and a commit in the last 90 days.

3 of 3 · 5 picks

Which open source API management tool is best for enterprise?

For enterprise, Hoppscotch Community Edition ranks first (MIT, 80,706 GitHub stars), followed by Bruno and Composio. Ranked for enterprise on GitHub stars, commits in the last year, open-source licenses and recent commits.

  1. 1

    Hoppscotch Community Edition

    Fast and beautiful API request builder.

    Hoppscotch Community Edition has 80,706 GitHub stars, uses the MIT license, ships a Docker image and had 311 commits in the last year; it replaces Postman. For enterprise it also scores on an open-source license and a commit in the last 90 days.

  2. 2

    Bruno

    Fast, git-friendly open-source API client, an alternative to Postman.

    Bruno has 47,893 GitHub stars, uses the MIT license and had 1,664 commits in the last year; it replaces Postman. For enterprise it also scores on an open-source license and a commit in the last 90 days.

  3. 3

    Composio

    Integration platform for AI agents & LLMs with support for 250+ apps and custom tools.

    AI-nativeComposio has 30,783 GitHub stars, uses the MIT license and had 4,817 commits in the last year. For enterprise it also scores on an open-source license and a commit in the last 90 days.

  4. 4

    PostgREST

    Serves a fully RESTful API from any existing PostgreSQL database.

    PostgREST has 27,732 GitHub stars, uses the MIT license, ships a Docker image and had 659 commits in the last year. For enterprise it also scores on an open-source license and a commit in the last 90 days.

  5. 5

    Hasura

    Fast, instant realtime GraphQL APIs on Postgres with fine grained access control, also trigger webhooks on database events.

    Hasura has 32,124 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 336 commits in the last year. For enterprise it also scores on an open-source license and a commit in the last 90 days.

FAQ

Questions and answers

Still curious? Email info@appsgit.com.

Is Hoppscotch Community Edition free?

Yes. Hoppscotch Community Edition is open-source software released under the MIT license, so you can self-host it at no cost. You only pay for the server it runs on, and some projects also offer an optional paid cloud plan.

Can I self-host these API management tools with Docker?

Yes, 8 of the 10 picks. Hoppscotch Community Edition, PostgREST and Opik publish Docker images, so you can run them on a VPS or home server with Docker Compose. The others install from their own packages or source; follow each project's install guide.

Are all of these API management tools open source?

All 10 apps on this list are open source. You can self-host and modify each one under its license.

Which of these API management tools is the most actively developed?

Composio, with 4,817 commits in the last 12 months and a latest release, @composio/anthropic@0.11.6, from October 2026. Activity is a good sign that bugs and security issues get fixed.

How is this list ranked?

Ranked on GitHub stars, commits in the last year, Docker images, open-source licenses and recent commits across the 17 apps in the API management category. Projects with fewer than 12 commits in the last 12 months rank below every more active project.

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