Tessera: Open-Source GUI Workspace for Managing Multiple Claude Code Sessions
Tessera is a free, open-source GUI workspace for managing multiple parallel Claude Code sessions. It was built after its creator repeatedly faced the pain of juggling several long-running terminal tasks — losing track of what each agent had done, what Git changes were made, and which task needed attention.
Key Features
- Multi-session management: Run several Claude Code sessions side by side in one window.
- Git worktree isolation: Each task lives in its own Git worktree, keeping branches and changes separate.
- Kanban/list views: Track task progress without relying on terminal scrollback.
- Agent activity inspection: See tool calls, approvals, progress, and agent actions in real time.
- Live diffs and PR context: View code changes and branch state while the task is still running.
- Multi-provider support: Works with Claude Code, Codex, and OpenCode.
Platforms and Installation
Tessera supports Windows (including WSL), macOS, Linux, and a self-hosted npm/browser version. It is open source and free to try.
GitHub: horang-labs/tessera
Built with Claude Code
The developer used Claude Code to build Tessera itself — implementing the provider adapter layer, debugging WSL/macOS edge cases, and iterating on the UI for task state, diffs, and agent activity.
Who It's For
Developers who run multiple long-running AI coding agent sessions simultaneously and need a structured way to monitor and manage them.
📖 Read the full source: r/ClaudeAI
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