Top ALTER GitHub Repositories & Tools (2026)

A terminal window manager that knows what your agents are doing. Tiling panes, workspaces, sessions that survive restarts, and one Inbox for every coding agent.

Open-source, AI-native knowledge base & Evernote alternative with native MCP. Zero-cost on Cloudflare or Docker.

The truly free, and open-source cross-platform CapCut replacement (supports MCPs).

A compounding agent OS for recursive agents. Also an open source alternative to Grok Bot and Meta's Muse.

Self-hosted iOS & Android simulator streaming for the whole team

The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

High performance self-hosted photo and video management solution.

Macro is a unified workspace for teams: email, chat, docs, tasks, agents, calls, and CRM — @-linked together with shared AI memory.

🎨 Best DeepSeek Harness Design Plugin. The open-source Claude Design alternative. 🖥️ Local-first desktop app. 🖼️ Your coding agent becomes the design engine: prototypes, landing pages, dashboards, slides, images & video — real files, HTML/PDF/PPTX/MP4 export. 🤖 Claude Code / Codex / Cursor / DeepSeek Harness / OpenCode & 20+ CLIs via BYOK.

A calm menu bar, done the native way. Hides the icons you don't need until you do.

grok-cli-self the lightweight, zero-dependency Grok CLI. Chat with xAI's Grok AI (Grok 4) in your terminal: one-shot prompts

Semrush SEO AI-powered analysis tool MCP server & CLI for keyword research, domain analytics, backlink analysis

The all-in-one bootable USB creator for Mac

A WorkBuddy-style desktop workspace powered by the DSH plugin ecosystem. WorkDSH manages projects, assets, experts, skills and connectors locally on desktop. All features are extensible via DeepSeek Harness plugins. Local-first, open ecosystem.

A modern file manager that helps users organize their files and folders.

Synthadoc: An open-source LLM knowledge compilation engine that turns raw documents into structured, local-first wikis. A transparent, human-readable alternative to traditional RAG, which can be self-managed and self-improved without the use of any tools.

Ministack: Free, open-source local AWS emulator - 60+ services, Terraform compatible, real databases. Free forever. MIT licensed.

OpenAI-compatible API migration kit: drop-in /v1/images/generations and chat examples, a compatibility matrix, rollback switches and a checklist for moving workloads between AI API gateways.

AI-native design editor. Open-source Figma alternative.

The Open Source DocuSign Alternative.