Thunderbolt
Thunderbird's open-source AI client that lets you choose your models and keep your data, aimed at self-hosted and on-prem deployments.
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About Thunderbolt
Thunderbolt is listed in our personal agents category and is aimed at people who want a ready-to-use product. Thunderbird's open-source AI client that lets you choose your models and keep your data, aimed at self-hosted and on-prem deployments. Pricing, as the maker states it: Open source. Maturity: Active. We last checked the official link on 2026-10-18.
Thunderbolt at a glance
- Category: Personal agents
- Built for: People and teams who want a ready-to-use AI product
- Pricing: Open source (as the maker states it)
- Licence: GNU General Public License v3.0 (OSI-approved open source)
- GitHub: thunderbird/thunderbolt · 4,801 stars (as of Oct 21, 2026)
- Latest release: Release v0.1.146, Oct 21, 2026
- Last commit: Oct 21, 2026
- Official site: thunderbolt.io
- Listed on AgentScout: Oct 18, 2026
Thunderbolt FAQ
What is Thunderbolt?
Thunderbird's open-source AI client that lets you choose your models and keep your data, aimed at self-hosted and on-prem deployments.
How much does Thunderbolt cost?
Thunderbolt's pricing, as the maker states it: Open source. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Is Thunderbolt open source?
Yes. Thunderbolt's GitHub repository is published under the GNU General Public License v3.0, according to the licence file in the repo.
Where can I find Thunderbolt's source code?
On GitHub at thunderbird/thunderbolt, which had 4,801 stars as of Oct 21, 2026. The latest release is Release v0.1.146 (Oct 21, 2026).
What are alternatives to Thunderbolt?
Similar tools include Open WebUI, DeepChat, 5ire, ChatMCP, nexu and Mixus.
Facts from our link-checked listing, the GitHub repository and the official site. See something wrong? Suggest an edit.
Thunderbolt ratings and reviews
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Thunderbolt alternatives
Other personal agents tools in our directory. See all personal agents tools →
Open WebUI
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DeepChat
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5ire
Cross-platform desktop AI assistant and MCP client with a local knowledge base and support for major model providers.
ChatMCP
Cross-platform AI chat client for desktop, mobile and web that implements the Model Context Protocol.
nexu
Open-source desktop client that connects your OpenClaw agent to WeChat, Feishu, Slack and Discord in one click.
Mixus
AI agents with human verification built into multi-step workflows.
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