Top FREE GitHub Repositories & Tools (2026)

A collective list of free APIs

Give your AI agent eyes to see the entire internet. Read & search Twitter, Reddit, YouTube, GitHub, Bilibili, XiaoHongShu — one CLI, zero API fees.

Free domain registration and practical DNS learning resources for everyone.

freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.

Free and open-source macOS menu bar toolkit.

A local multi-agent harness that works with your existing Claude Code, Codex subscriptions, allows you to run an office of agents

Free Windows, Mac and Linux cleaner, scanner, and more.

XERJ is the new way for AI to search data. Its autoindex capability activates agents to know your data without the token waste of grep and sed. One command indexes code, docs, logs and PDFs for search, RAG, security audits and agent memory, using 40x fewer tokens than grep. Elasticsearch compatible, so existing clients just work.

☁️ Nextcloud server, a safe home for all your data

Official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.

Grab your own cool'runs-on.dev' subdomain to use for free forever.

Free V2ray Configs, Updating Every 15 minutes. 🚀🌐

🔒 Free V2Ray configs auto-updated every 15m | VLESS, VMess, Trojan, Shadowsocks, Hysteria2, TUIC, Reality, WireGuard | subscription link | bypass censorship | Compatible with v2rayNG, Hiddify, NekoRay, NekoBox, v2rayN, Clash Meta, Shadowrocket | xray-core | iran | free vpn | @Raydikalx

Sega Saturn emulator

FreeRADIUS - A multi-protocol policy server.

The largest collection of PyTorch image encoders / backbones. Including train, eval, inference, export scripts, and pretrained weights -- ResNet, ResNeXT, EfficientNet, NFNet, Vision Transformer (ViT), MobileNetV4, MobileNet-V3 & V2, RegNet, DPN, CSPNet, Swin Transformer, MaxViT, CoAtNet, ConvNeXt, and more

Unlimited FREE AI coding. Connect Claude Code, Codex, Cursor, Cline, Copilot, Antigravity to FREE Claude/GPT/Gemini via 40+ providers. Auto-fallback, RTK -40% tokens, never hit limits.

Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

Self-hosted multi-protocol AI API proxy for Antigravity, Codex, Grok, Kiro, OpenAI, Claude, and custom providers. Supports OpenAI-compatible API, Claude API, Gemini protocol conversion, GPT, Grok Build, Claude Opus, Gemini Pro, Kimi, MiniMax, provider pools, smart routing, and automatic failover.

Agent-less vulnerability scanner for Linux, FreeBSD, Container, WordPress, Programming language libraries, Network devices