Open Source Developer Tools

Alternative toNotion

Organize your notes with Markdown and Git integration

• 20,116 GitHub stars
• AGPL-3.0Licence AGPL-3.0

Alternative toAdobe PDF Extract API

Rust-powered PDF parser with smart OCR routing for AI pipelines

• 19,698 GitHub stars
• MITLicence MIT

Alternative toCloudCannon

Git-based content management for static site generators

• 19,440 GitHub stars
• MITLicence MIT
• #CMS

Alternative toPostman

Local-first API client for HTTP, GraphQL, and WebSocket

• 19,338 GitHub stars
• MITLicence MIT

InWeb Development

Build GenLayer intelligent contracts in minutes, not days

• 18,805 GitHub stars
• MITLicence MIT
• #LLM

Alternative toPostman

AI-powered tool that converts API traffic into test cases

• 18,658 GitHub stars
• Apache-2.0Licence Apache-2.0
• #Testing

Alternative toCodeDashboard

Turn any GitHub repo into an interactive architecture diagram

• 18,378 GitHub stars
• MITLicence MIT

Alternative toX (formerly Twitter) Premium

Own your account and move freely across compatible servers

• 18,349 GitHub stars
• MITLicence MIT

Alternative toRetool

Developer platform for scripts, automations, and internal tools

• 18,229 GitHub stars
• AGPL-3.0Licence AGPL-3.0

Alternative toGrok Bot

Open source Agent OS built in Rust with autonomous agents

• 18,212 GitHub stars
• Apache-2.0Licence Apache-2.0
• #AI Agents

Alternative toBrowserbase

AI agent browser with shared Chrome state, zero cost

• 18,122 GitHub stars
• MITLicence MIT
• #AI Agents

InCommunication & Collaboration

Official Lark/Feishu CLI with 200+ commands and AI Agent Skills

• 17,758 GitHub stars
• MITLicence MIT
• #AI Agents