JetBrains Thinkrail

JetBrains has released ThinkRail, an agentic IDE that leverages AI agents to assist with coding tasks while learning from project-specific information through "living specs" and reusable skills. The platform features isolated workspaces built on git worktrees that allow agents to work in parallel without affecting the main codebase, with integrated GitHub integration for managing pull requests and CI checks. ThinkRail is designed to improve over time through extension support, enabling the AI agent to create custom tools based on user workflows.