Pick the license that fits.
Free
Keep your code proprietary. Credit Slint.
- Embedded, included, not included, available as an add-on
- Desktop, included, not included, available as an add-on
- Mobile, included, not included, available as an add-on
- Browser, included, not included, available as an add-on
- Community Support, included, not included, available as an add-on
- Standard Support, included, not included, available as an add-on
- GUI Test Framework, included, not included, available as an add-on
Commercial
Perpetual fallback license. All platforms.
- Embedded, included, not included, available as an add-on
- Desktop, included, not included, available as an add-on
- Mobile, included, not included, available as an add-on
- Browser, included, not included, available as an add-on
- Community Support, included, not included, available as an add-on
- Perpetual Fallback, included after 12 months, not included, available as an add-on
- Standard Support, included, not included, available as an add-on
- GUI Test Framework, included, not included, available as an add-on
Shipping devices? Buy a one-time production license per product, from €2,500.
Prices exclude VAT and are shown in local currency, where we support it.
How will you distribute your app?
A route to explore, not an automatic licence determination.
Who is buying?
A route to explore, not a licence determination.
| Item | GPLv3 | Royalty-free | Commercial |
|---|---|---|---|
| Cost | Free | Free | From €9/mo per developer |
| Platforms | All including embedded¹ | Desktop · mobile · browser | All including embedded¹ |
| Build Proprietary apps | ✗ | ✓ | ✓ |
| Community support | ✓ | ✓ | ✓ |
| Standard Support | Add-on | Add-on | Add-on |
| GUI Test Framework | Add-on | Add-on | Add-on |
| Perpetual Fallback | — | — | ✓² |
| Shipping devices | No fee | — | Production license³ |
| Premium (SLA) Support | Add-on | Add-on | Add-on |
¹ An Embedded System is a computer system designed to perform a specific task within a larger mechanical or electrical system.
² With Startup and Company seats, after 12 months; not with Individual.
³ One-time, per product, from €2,500. No royalties.
How is the Commercial license priced?
Per developer seat, per month, by who is buying: Individual (€9/mo) for your own work, not on behalf of a company; Startup (€49/mo) for a company with up to 10 employees, up to €2M turnover or balance sheet, and under 5 years since incorporation; and Company (€199/mo) for every other company. Every seat covers every platform, embedded included.
What's included vs. an add-on?
Every seat includes every platform and community support. Startup and Company seats also include the Perpetual Fallback after 12 months. Standard Support and the GUI Test Framework are add-ons for every seat.
Do I need anything else to ship devices?
Yes. Seats cover designing, developing and testing. Shipping devices commercially needs a Production License: a one-time, perpetual payment per product family, from €2,500 for up to 1,000 devices a year. There are no royalties. Non-commercial, personal and open source projects are exempt.
Is desktop, mobile and web really free?
Yes. Royalty-free covers those three for proprietary products at no cost. You'd only pay if you want support, the Test Framework, or to ship on embedded, or simply to fund Slint via a Commercial license.
Can I use the Commercial license for desktop, mobile or web?
Yes. Commercial covers every platform. On desktop, mobile and web you can choose Royalty-free (free, with Slint attribution) or Commercial (no attribution, and the Perpetual Fallback with Startup and Company seats). Both keep your application source proprietary.
Is the GUI Test Framework free?
No, it's a paid add-on for every license: GPLv3, Royalty-free and every Commercial seat.
What's the Perpetual Fallback License?
The perpetual right to keep using a Slint version without an active subscription, to build and maintain the product versions you already have, including field updates. Startup and Company seats earn it after 12 months of continuous subscription, and every version released while you keep subscribing is covered too. New product versions need active seats. It is not included with Individual seats.
Do I keep my own source code?
Under Commercial and Royalty-free, yes: your application code stays proprietary. Under GPLv3 your own files can keep any GPL-compatible license (MIT, BSD, and so on), but the combined app is distributed under GPLv3 with complete source, so it can’t stay proprietary.
Add-ons
For every license and every seat
Answer queries, troubleshoot and fix bugs on the latest stable release.
Add to a licenseFor every license and every seat
Automated UI testing for Slint apps.
Add to a licensePrices exclude VAT and are shown in local currency, where we support it.