Graviton

Overview

Graviton, by Yggdrasil, is an open-source, local-first AI workspace that turns conversations into persistent, navigable memory instead of a single growing thread. Fork from any point in a chat to explore multiple directions in parallel without contaminating the main line, and view your work as a tree with shared ancestry and branch summaries. Switch between Claude, GPT, Gemini, local models, and 400+ others while keeping one continuous memory, and give agents structured, navigable context. Beyond chat, Graviton is a programmable workspace: build custom tools and apps inside it, load Skills and MCPs, split work across subagents, intercept chat flow with hooks, and even ask it to restyle its own theme. A built-in terminal, embedded browser with DevTools, Claude Code support, and remote access from any browser device round it out, with sensitive files and working state kept close to your machine.

Pricing: Free (open source, local) | Subscription $9.99–$49.99/mo

Architecture: Apple Silicon

Key Features

• Branching conversations — fork from any point and explore in parallel
• Persistent, navigable memory with a tree view and branch summaries
• One continuous memory across Claude, GPT, Gemini, local, and 400+ models
• Local-first — keeps sensitive files and state on your machine
• Programmable workspace with custom tools and apps inside chat
• Skills, MCP support, and subagents for specialized workflows
• Hooks to intercept chat flow and auto-build branch summaries
• AI-made themes that restyle the entire UI
• Built-in terminal to run builds and tests in context
• Embedded browser with DevTools and Claude Code support
• Remote access from any browser device

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