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10 top picks · 1 audience ranking

Best open source developer tools

The best open source developer tool is OpenHands (MIT, 92,067 GitHub stars, Docker image). code-server stands out for a permissive MIT license, and Langfuse stands out for the most commits in the last 12 months (5,125).

This page also breaks the picks down by team size and use: OpenHands leads for solo developers.

Updated · data from GitHub, refreshed daily

Top picks

  1. Rank 1:

    OpenHands

    OpenHands/OpenHands

    Platform for AI software development agents that write code and run commands.

    Active · last commit Oct 28, 2026

    AI & LLM ToolsTypeScriptDocker

    AI-nativeStands out for the most GitHub stars. OpenHands has 92,067 GitHub stars, uses the MIT license, ships a Docker image and had 3,361 commits in the last year.

  2. Rank 2:

    code-server

    coder/code-server

    VS Code in the browser, hosted on a remote server.

    Active · last commit Oct 27, 2026

    Developer ToolsTypeScriptDocker

    Stands out for a permissive MIT license. code-server has 79,721 GitHub stars, uses the MIT license, ships a Docker image and had 336 commits in the last year.

  3. Rank 3:

    Langfuse

    langfuse/langfuse

    LLM engineering platform for model tracing, prompt management, and application evaluation. Langfuse helps teams collaboratively debug, analyze, and iterate on their LLM applications such as chatbots…

    Active · last commit Oct 28, 2026

    Developer ToolsTypeScriptDocker

    AI-nativeStands out for the most commits in the last 12 months (5,125). Langfuse has 36,628 GitHub stars, uses the MIT license, ships a Docker image and had 5,125 commits in the last year; it replaces Sentry.

At a glance

Open source developer tools compared

Ranked on GitHub stars, commits in the last year, Docker images, open-source licenses and recent commits across the 34 apps in the developer tools 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
OpenHandsthe most GitHub starsMIT92,0673,361Oct 28, 2026Yes
code-servera permissive MIT licenseMIT79,721336Oct 27, 2026Yes
Langfusethe most commits in the last 12 months (5,125)MIT36,6285,125Oct 28, 2026Yes
Portainera permissive Zlib licenseZlib38,735772Oct 27, 2026Yes
k6its Go codebaseAGPL-3.032,064781Oct 27, 2026Yes
Temporal–MIT24,0322,125Oct 28, 2026Yes
PostHog–MIT40,48641,124Oct 28, 2026No
Coder–AGPL-3.017,2096,106Oct 28, 2026Yes
Verdaccio–MIT17,953567Oct 27, 2026Yes
Sentry Self-Hosted–source-available, FSL 1.1 (Apache 2.0 future license)45,66620,112Oct 28, 2026No

1 of 2 · 10 picks

Top picks

10 of the 34 apps in the developer tools category.

  1. 1

    OpenHands

    Platform for AI software development agents that write code and run commands.

    AI-nativeStands out for the most GitHub stars. OpenHands has 92,067 GitHub stars, uses the MIT license, ships a Docker image and had 3,361 commits in the last year.

  2. 2

    code-server

    VS Code in the browser, hosted on a remote server.

    Stands out for a permissive MIT license. code-server has 79,721 GitHub stars, uses the MIT license, ships a Docker image and had 336 commits in the last year.

  3. 3

    Langfuse

    LLM engineering platform for model tracing, prompt management, and application evaluation. Langfuse helps teams collaboratively debug, analyze, and iterate on their LLM applications such as chatbots…

    AI-nativeStands out for the most commits in the last 12 months (5,125). Langfuse has 36,628 GitHub stars, uses the MIT license, ships a Docker image and had 5,125 commits in the last year; it replaces Sentry.

  4. 4

    Portainer

    Web UI for managing Docker, Swarm and Kubernetes environments.

    Stands out for a permissive Zlib license. Portainer has 38,735 GitHub stars, uses the Zlib license, ships a Docker image and had 772 commits in the last year.

  5. 5

    k6

    Modern load testing tool using JavaScript scripts.

    Stands out for its Go codebase. k6 has 32,064 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 781 commits in the last year.

  6. 6

    Temporal

    Durable execution platform for reliable workflows and background jobs.

    Temporal has 24,032 GitHub stars, uses the MIT license, ships a Docker image and had 2,125 commits in the last year.

  7. 7

    PostHog

    Product analytics, session recording, feature flagging and a/b testing that you can self-host (alternative to Mixpanel, Amplitude, Heap, HotJar, Optimizely).

    AI-nativePostHog has 40,486 GitHub stars, uses the MIT license and had 41,124 commits in the last year.

  8. 8

    Coder

    Remote development machines on your own infrastructure.

    Coder has 17,209 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 6,106 commits in the last year.

  9. 9

    Verdaccio

    Lightweight private npm proxy registry.

    Verdaccio has 17,953 GitHub stars, uses the MIT license, ships a Docker image and had 567 commits in the last year.

  10. 10

    Sentry Self-Hosted

    Powerful error tracking platform with wide language support and a robust API.

    Sentry Self-Hosted has 45,666 GitHub stars, is source-available under the FSL 1.1 (Apache 2.0 future license) (not an open-source license) and had 20,112 commits in the last year; it replaces Sentry.

2 of 2 · 5 picks

Which open source developer tool is best for solo developers?

For solo developers, OpenHands ranks first (MIT, 92,067 GitHub stars), followed by code-server and Langfuse. Ranked for solo developers on GitHub stars, commits in the last year, Docker images, open-source licenses and recent commits.

  1. 1

    OpenHands

    Platform for AI software development agents that write code and run commands.

    AI-nativeOpenHands has 92,067 GitHub stars, uses the MIT license, ships a Docker image, is written in TypeScript and had 3,361 commits in the last year. For solo developers it also scores on a Docker image, an open-source license and a commit in the last 90 days.

  2. 2

    code-server

    VS Code in the browser, hosted on a remote server.

    code-server has 79,721 GitHub stars, uses the MIT license, ships a Docker image, is written in TypeScript and had 336 commits in the last year. For solo developers it also scores on a Docker image, an open-source license and a commit in the last 90 days.

  3. 3

    Langfuse

    LLM engineering platform for model tracing, prompt management, and application evaluation. Langfuse helps teams collaboratively debug, analyze, and iterate on their LLM applications such as chatbots…

    AI-nativeLangfuse has 36,628 GitHub stars, uses the MIT license, ships a Docker image, is written in TypeScript and had 5,125 commits in the last year; it replaces Sentry. For solo developers it also scores on a Docker image, an open-source license and a commit in the last 90 days.

  4. 4

    Portainer

    Web UI for managing Docker, Swarm and Kubernetes environments.

    Portainer has 38,735 GitHub stars, uses the Zlib license, ships a Docker image, is written in TypeScript and had 772 commits in the last year. For solo developers it also scores on a Docker image, an open-source license and a commit in the last 90 days.

  5. 5

    k6

    Modern load testing tool using JavaScript scripts.

    k6 has 32,064 GitHub stars, uses the AGPL-3.0 license, ships a Docker image, is written in Go and had 781 commits in the last year. For solo developers it also scores on a Docker image, an open-source license and a commit in the last 90 days.

FAQ

Questions and answers

Still curious? Email info@appsgit.com.

Is OpenHands free?

Yes. OpenHands 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 developer tools with Docker?

Yes, 8 of the 10 picks. OpenHands, code-server and Langfuse 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 developer tools open source?

9 of the 10 apps on this list are open source; 1 is source-available. Source-available licenses add conditions, such as limits on hosted or commercial use, so read them before you deploy.

Which of these developer tools is the most actively developed?

PostHog, with 41,124 commits in the last 12 months and a latest release, desktop-v0.61.859, 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 34 apps in the developer tools category. Projects with fewer than 12 commits in the last 12 months rank below every more active project.

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