Tessera

Keep parallel AI coding work organized.

Tessera helps you run Claude Code, Codex, and OpenCode side by side in terminal or rich GUI modes—without losing track of sessions, files, branches, diffs, or pull requests.

Product Demos

Projects, collections, sessions, tabs, and panes

Organize AI coding work by project and collection, then open sessions across persistent tabs and split panes.

Terminal mode, with GUI when you need it

Run coding agents in terminal (PTY) sessions, rich GUI conversations, or both side by side in the same workspace.

Kanban board workflow

Move implementation work through Todo, Doing, Review, and Done while keeping each task tied to sessions, collections, and worktrees.

See every active task across Todo, Doing, Review, Done, and Chat, grouped by project and tied to its agent session and worktree.

Open any task directly from the board and continue working in its terminal session without losing context.

Terminal and file tabs

Open agent sessions, terminals, and files as movable tabs so you can reshape the workspace around the work instead of switching tools.

Rich composer controls

Open new panels, continue an existing conversation, tune reasoning, select models, choose permissions, use voice input (browser runtime only), add @ references, attach images, and send context-rich prompts from one composer.

Agent state, tool logs, and diffs

Keep each agent session tied to its task and worktree while tracking tool calls, failures, file changes, diffs, and branch state in real time.

Session instructions and memory

See and edit the active instructions and memory for the session at a glance, including user and project scopes, global memory, and past work summaries.

Install

Desktop app

Download from GitHub Releases.

Windows builds are not code-signed yet, so SmartScreen may show an unknown-publisher warning. macOS builds are signed and notarized with Apple Developer ID.

Browser runtime

Requires Node.js 20 or later and npm 10 or later.

npm install -g @horang-labs/tessera
tessera

Open the printed local URL.

Docker Compose

mkdir -p data/config data/local data/ssh data/codex data/tessera workspaces
touch data/gitconfig
docker compose up --build -d

Open http://127.0.0.1:32123. If bind mounts are not writable:

sudo chown -R 1000:1000 data workspaces

First Run

On first run, Tessera guides you through:

1. Creating a local account for the browser runtime.
2. Checking that a supported CLI is installed and authenticated.
3. Selecting a project folder.
4. Starting a chat or worktree-backed task.

Authenticate provider CLIs first, for example with claude login, codex login, or OpenCode's configured provider credentials.

Build From Source

For development, clone the repository and install dependencies:

Source development requires Node.js 20 or later and npm 10 or later.

git clone https://github.com/horang-labs/tessera.git
cd tessera
npm install

Tessera uses a custom Node.js server for the Next.js app, WebSocket transport, database initialization, provider bootstrapping, and background pollers. The dev script starts that server:

npm run dev

Supported environment variables:

Desktop release builds use Electron:

Electron build outputs are written under release/.

Stored Data And Privacy

Tessera runs locally, stores app data under ~/.tessera/ by default, and sends provider requests through the Claude Code, Codex, or OpenCode CLI installed on your machine.

Published builds include minimal anonymous usage telemetry that you can disable during onboarding or in Settings. Tessera does not collect prompts, messages, file paths, command output, repository names, or account details.

Teams And Design Partners

Tessera is currently focused on individual local workflows, but we are preparing team and enterprise features for companies running coding agents across multiple developers.

The team product is being shaped around three areas: shared workspaces for parallel agent work, governance for permissions and tool use, and operational visibility into agent usage, cost, and review state.

If your team wants to use Tessera in production, join the design partner waitlist.

Roadmap

Planned areas include:

License

Tessera is open source under the GNU Affero General Public License v3.0 (AGPL-3.0).

Copyright (c) 2026 Horang Labs, Inc.

See the LICENSE file for the full text.