Open-source AI tools worth installing

1. Page Assistn4ze3m/page-assist★ 8.3kMITTypeScript

   Chat with local models from Ollama, LM Studio and others in a browser sidebar, and ask questions about the current page or PDF.

   Data stays on your machine and no account is needed — the easiest way to bring local models into everyday browsing. Works in Chrome and Firefox.

   InstallSearch “Page Assist” in the Chrome Web Store or Firefox Add-ons
2. Copilot for Obsidianlogancyang/obsidian-copilot★ 7.9kAGPL-3.0TypeScript

   Ask questions about, summarize and rewrite your entire vault inside Obsidian; newer versions can also run agents like OpenCode, Codex and Claude Code directly in Obsidian.

   The most full-featured Obsidian AI plugin. Works with cloud APIs or local Ollama/LM Studio; core features are free.

   InstallObsidian Settings → Community plugins → search “Copilot”
3. Smart Connectionsbrianpetro/obsidian-smart-connections★ 5.5kCustom licenseJavaScript

   Indexes your notes with a local embedding model and surfaces semantically related notes and passages as you write, helping you build links.

   Zero setup by default, no API key, vectors computed locally. Good for privacy-minded users who want old notes to resurface.

   InstallObsidian Settings → Community plugins → search “Smart Connections”

Updated Oct 25, 2026 · ★ GitHub