Best Open Source Tools (Free) in 2026
74 free open source products, ranked by community upvotes.
Gneol
AI runtime in a single binary — one file, one-command agent deployment
MapFlip
Redirect Apple Maps links to Google Maps on Android.
OpenQR
Free, open-source QR code generator — no watermark, no sign-up
Kuku
Local-first AI Markdown workspace for macOS
Apex Notes
Obsidian for hierarchical thinkers
Gladys Assistant
Private, self-hosted smart home with AI and a local voice assistant
Verso
Open-source agent orchestrator that keeps your working memory private on your Mac.
Thuki
Private, local AI secretary overlay for macOS — summon with double‑tap Control
FocusClaw
Local-first, context-aware task manager for OpenClaw & Hermes AI agents
Pivvi
Save work when an AI caps out and find the best free AI
ServerKit
Lightweight server control panel to deploy, manage, and monitor apps and services.
Topaz
Open-source local Azure emulator — run Azure services and ARM/Terraform locally
Bible Atlas
Interactive Bible maps, timelines, and family trees linked to scripture
Culprit SQL Studio
Find slow SQL queries and get a one-sentence fix
Calculate My Heart Rate
Calculate 5 personalized heart rate training zones using the Karvonen formula.
The Model Harness Cordis Split
Open-source agent harness where every capability is a swappable plugin.
BrickThink
Run LEGO® SERIOUS PLAY® workshops online with a real-time shared brick canvas
Toolcraft
Open-source starter kit and UI library to build AI-powered design apps.
memu-memory
Persistent personal memory as a wiki across sessions, agents and devices.
The Shy Dock
Auto-hides your macOS Dock on laptop; returns when an external monitor is connected
CopperOS
Open-source agentic Chrome extension that lets AI perform and automate browser tasks.
Help Wanted
Find and filter good-first GitHub issues across hundreds of thousands of projects.
DS4Windows
Use PlayStation DualShock/DualSense controllers on Windows by emulating an Xbox controller.
YouTube to WAV
Convert YouTube videos to lossless WAV files online — fast, free, no signup.