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Thunderbolt
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AI that feels like yours.
Because it is.

An open-source AI workspace for chat, research, code, and getting things done. Your models. Your tools. Your way.

Download Thunderbolt Try it on the web
Thunderbolt planning a backyard star party with a Webb telescope photo story open beside the conversation

A little more freedom.

Think, make, and work your own way.

Choose your AI.

Use your favorite models, run one locally, or try something new.

Bring your tools.

Connect the services, skills, and agents that make you more capable.

Keep your independence.

Local-first storage. Encrypted sync. Open source you can inspect and change.

Follow that thought.

Find an answer. Build a thing. Give an agent a job.

Explore connected tools

“Build a little tool that helps our book club choose what to read next.”

  • Read the project and make a plan
  • Build the voting interface
  • Run the checks and refine the result

Put the coding agent to work in your project with Thunderbolt CLI.

Illustrative workflow

Good technology
should leave you
more free.

Free to follow a strange idea. To choose a different model. To see how it works, change what you need, and build something we haven’t imagined.

From the Thunderbird team, part of the Mozilla family. Built in the open, for a future we all get to shape.

Make it your own on GitHub

A few things
worth knowing.

Explore the docs
Can I choose my own AI?

Yes. Connect a compatible model provider, including a local model server, or bring an external agent with its own models and tools. You can change your setup as your needs change.

Explore your options
Where does my data go?

Your workspace lives on your device. Synced content is end-to-end encrypted. Your chosen provider or agent processes the prompts you send it; sync encryption does not hide those requests. Encryption is in preview and has not yet had a cryptography audit.

Understand your data
Can it work with my tools?

Add MCP tools to the built-in assistant, or connect external agents through ACP. An agent with browser or computer-use tools can bring those capabilities into your workspace.

Make the connections
Can my team make it our own?

Self-host Thunderbolt with Docker Compose, Kubernetes, or AWS. Connect your identity provider and choose the models and infrastructure that work for your organization. You can also deploy a public agent with the Render blueprint.

Explore self-hosting Deploy a public agent on Render ↗

Go on.
Surprise yourself.

Download Thunderbolt Try it on the web
Install the CLI
curl -fsSL https://raw.githubusercontent.com/thunderbird/thunderbolt/main/install.sh | shCLI documentation ↗
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