Top ALTER GitHub Repositories & Tools (2026)

The Open Source DocuSign Alternative.

Open-source, bring-your-own-key (BYOK) multi-model AI chat client for iOS, Android and the web. One LLM client for OpenAI, Anthropic, Google Gemini, OpenRouter, DeepSeek and ten more providers, plus any OpenAI-, Anthropic- or Gemini-compatible endpoint — Ollama, LM Studio, llama.cpp, vLLM. Local-first, self-hostable, no account. AGPL-3.0.

Lenovo Legion Toolkit (LLT) is a Windows desktop utility created for Lenovo gaming laptops that replaces Lenovo Vantage, Legion Zone, and Legion Space.

A feature-packed Android media downloader. View all native stream formats, download full playlists, manage batch queues, and much more

Open source voice AI platform. Self-hosted alternative to Vapi and Retell. On Prem, BYOK across Speech to Speech or LLM/STT/TTS, with a visual workflow builder, MCP native and telephony support.

Run Windows games on Apple Silicon — free, open source, with an open compatibility database that tells you what actually works.

Render OG images and paged PDFs from JSX, HTML, and CSS. No headless browser. Runs on Node.js, Cloudflare Workers, browsers, and Rust.

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

Programmable text utility that mac needs

Any file → clean Markdown for AI agents: PDF, Word, PowerPoint, Excel, EPUB, HTML and web pages, images (OCR), audio and video (metadata, subtitles, transcripts). A fast Rust MCP server and CLI that runs on your machine. No API key.

An open-source native macOS screenshot and screen recording app. A CleanShot X alternative.

Open-source CRM with native AI agent support. 37 MCP tools, REST API, self-hosted. Built with Laravel & Filament

The most comprehensive Claude Code guide: agentic workflows, hooks, skills, MCP servers, quizzes, and production-ready templates. 430K+ lines.

AI-native open-source alternative to Vercel + Sentry + PostHog + Pingdom + Resend + E2B. 440+ CLI operations with drop-in skills for Claude Code, Codex & OpenCode — deployments, analytics, session replay, error tracking, OpenTelemetry, email, sandboxes & AI gateway in one self-hosted Rust binary.

Awesome Privacy - A curated list of services and alternatives that respect your privacy because PRIVACY MATTERS.

The MIT-licensed infinite-canvas whiteboard SDK. An open-source tldraw alternative — no license fee, free for commercial use. React, React Native, and plain JS.

Awesome list of open-source startup alternatives to well-known SaaS products 🚀

AI video processing pipeline for generating vertical shorts using LLMs, Whisper transcription, highlight detection and automated editing

Automated book download manager for Usenet. Monitor authors, search indexers, download via SABnzbd, and organize your library. The modern replacement for Readarr.

Mac Sai: the open-source Mac cleaner, optimizer, and malware scanner. A free, Apple-notarized alternative to CleanMyMac, built with Swift 6 and SwiftUI.