JonnaFree for everyone, for any work
Jonna is source-available under the PolyForm Shield license. Use it at home, at work, at a company of any size. No seat counts, no trial.
Last updated November 10, 2026
What you can do
| You want to | Free under the license? |
|---|---|
| Download and use it, for anything, at any company size | Yes |
| Use it for client work, freelance work and commercial projects | Yes |
| Read the source, build it yourself, change it | Yes |
| Change it for your team and use that build inside your company | Yes |
| Publish your own version of the editor (a fork) for others to use | Needs a license, even if it's free, because it competes with Jonna |
| Write extensions, share them, sell them | Yes. Extensions use the public API; they aren't Jonna |
| Teach with it, write about it, record videos | Yes |
| Use code from Jonna inside a product that isn't an editor or IDE | Yes, if that product doesn't compete with Jonna; ask if unsure |
| Sell Jonna, or a product built from it that does what Jonna does | Needs a license |
| Offer Jonna as a hosted service to others | Needs a license |
When you need a license
The license has one limit: you may not use Jonna to provide a product that competes with Jonna, whether that product is paid or free. To do that you need a commercial license from us.
- Selling or giving away a branded or white-label editor built from Jonna
- Shipping Jonna's editor inside another developer product
- Offering Jonna as a hosted service
These don't need one: your company using Jonna or its own modified build internally, selling an extension, consulting or client work done in Jonna, and writing about it or teaching with it.
A commercial license is a signed agreement covering the product, the territory, the term, the support and any use of the Jonna name. Write to hello@jonna.dev with what you'd like to build.
Build inside it, or build on it
You can ask the agent to make an extension while you work on your project: a new command, a sidebar tool or a repeated workflow. Extensions use the editor's sandboxed API and can be shared or sold under the terms above.
For changes beyond the extension API, the source lets you study and modify the Rust services and the TypeScript interface in your own build. Read the full license before distributing a modified editor.
The name and logo
The license doesn't give you the name or the logo. Your own builds use their own. See trademarks.
This page explains the license in plain words. The license itself is the PolyForm Shield License 1.0.0, in the LICENSE file that ships with the source; where the two differ, the license applies. Jonna isn't open source in the OSI sense. This page is not legal advice.