leon

What it does

Voice or text in, skills you add yourself, running on your own machine — a long-running open-source take on the personal assistant, with the privacy properties that follow from self-hosting. Read the author's own status note before committing: the core is being rewritten with breaking changes, outside contributions are paused, and the work happens after hours because it is not funded. Fine if you are here for the architecture or the long game, less so if you need something usable this week. MIT.

Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.

Screenshots & visuals

Before you start

• Setup difficultyEasy to start
• Command lineRequired
• API keyNot required
• Sends data onlineYes

Judged automatically from the project's own metadata. Always confirm on the official page.

leon FAQ

Is leon free?

Yes. It runs on your own machine, so there is no usage-based cost either.

Do I need to install anything or write code to use leon?

It needs the command line. If you are not comfortable typing commands, expect to get stuck during setup.

Does leon work on a phone?

No. It needs a computer.

Can I use leon commercially?

The licence is MIT, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.

How it compares

The conditions that decide whether you can actually use it, side by side.

"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.

Other everyday life tools