Best Open Source Tools for Founders (2026)

145 Open Source tools

• KiloClaw

  Hosted OpenClaw. No Mac mini required.

  767 upvotes

• Osaurus

  Open source agents that run 100% locally on your Mac

  692 upvotes

• Moltbot

  The AI that actually does things

  638 upvotes

• OpenHuman

  An open source AI harness built with the human in mind

  525 upvotes

• Open Wearables

  Open infrastructure for wearable-powered health products.

  495 upvotes

• Bruno

  Reinventing the API Client | Local, Native Git, Open Source

  461 upvotes

• Kimi

  The world's first open 3T-class model

  451 upvotes

• ditto.site

  Clone any website into clean code. Free & open source

  450 upvotes

• Modelence App Builder

  Build real apps, not prototypes

  439 upvotes

• Novu

  Ship agents where your users already work

  421 upvotes

• Google Gemma 4

  Google's most intelligent open models to date

  418 upvotes

• Ollama

  Massive local model speedup on Apple Silicon with MLX

  409 upvotes

• Wandesk

  Build Your Own AI Desktop

  400 upvotes

• MaxClaw by MiniMax

  Self-evolving AI model powering autonomous agents

  376 upvotes

• Fish Audio

  Real Expressive AI Voices

  353 upvotes

• ClaudeUsageBar

  Know exactly how much Claude you have left at a glance

  344 upvotes

• Zed

  High-performance, open source, multiplayer code editor

  321 upvotes

• OpenObserve

  AI-native, open-source Datadog alternative

  304 upvotes