# Commercial licensing
SlintPlot is free under either of two licenses (see [LICENSE.md](LICENSE.md)):
- the **GNU GPL, version 3**: free for anyone, for any purpose, including
companies. Software that includes SlintPlot and is distributed to others
must be distributed under the GPLv3, with its source code. Using SlintPlot
only within your own organization, without distributing it, has no such
condition.
- the **PolyForm Noncommercial License 1.0.0**: free for any noncommercial
purpose, with or without sharing your source code: personal projects,
hobby projects and learning; research, experiments and testing; education,
and use by charitable, public research, public safety, health and
government organizations, as listed in the license
## Free to try
Download SlintPlot, experiment and build prototypes for free, at home or at
work: using it within your own organization, without giving the software to
others, is allowed under the GPLv3. You need a commercial license when you
sell, ship or deliver a closed-source product that uses it.
## When you need a commercial license
You need a commercial license when you use SlintPlot for a commercial
purpose and don't distribute your software under the GPLv3, for example:
- in a closed-source product, app or device you sell, license or ship to
customers
- in a closed-source app that is free to download but earns money, such as
through paid upgrades, subscriptions or ads
- in closed-source software you deliver to a client
## Prices
Commercial licenses are per developer, per year, and cover any number of your
products. Prices exclude VAT.
| Indie | Solo developers and companies with under €250,000 in annual revenue | €99 per developer per year |
| Business | Every other company | €299 per developer per year |
| Enterprise | Every developer in the company, custom terms | from €2,500 per year |
**Early bird:** buy by 31 December 2027 and pay half price (€49 Indie, €149
Business per developer per year, Enterprise from €1,250 per year) for your
first two years: the first year and the first renewal.
**Perpetual fallback:** products you release while your license is active may
keep being sold and shipped after it ends, with the SlintPlot version they
were built with. New products and newer SlintPlot versions need an active
license.
Early adopters also help shape SlintPlot: their feature requests and feedback
come first when we plan what to build next.
A developer is anyone who writes code that uses SlintPlot.
## How to get one
Licenses will be sold on [slintplot.dev](https://slintplot.dev/#pricing),
with Paddle as the seller of record. Until then, or for the Enterprise plan,
email <license@slintplot.dev> and say briefly how you plan to use the
library.
## Slint's own license
SlintPlot is built on [Slint](https://slint.dev), which has its own
licensing (GPLv3, a royalty-free license for desktop and web apps, or a paid
license). Your application needs a suitable Slint license in addition to a
SlintPlot license.
