License & Pricing
Tract Stack is released under the O’Saasy License. This is a permissive source-available license based on MIT, but with a specific restriction against selling the software as a competing service.
Why O’Saasy?
Section titled “Why O’Saasy?”The O’Saasy license was originally popularized by 37signals (for Fizzy) to solve a specific problem: allowing developers to learn from and use code freely, without allowing cloud giants to package and resell that hard work.
Basically… it is the MIT do-whatever-you-want license, but with the commercial rights for SaaS (Software-as-a-Service) reserved for the copyright holder.
What You Can Do
Section titled “What You Can Do”✅ Use Tract Stack for commercial projects ✅ Modify the source code for your needs ✅ Build client websites and charge for your services ✅ Deploy on your own infrastructure ✅ Create internal business applications ✅ Distribute your modifications (under same license)
What You Cannot Do
Section titled “What You Cannot Do”❌ Sell Tract Stack as a hosted service ❌ Compete directly with Tract Stack’s business model ❌ Redistribute as a commercial SaaS product
Is This Open Source?
Section titled “Is This Open Source?”Technically, no. The Open Source Initiative (OSI) definition requires no restrictions on field of use. Because O’Saasy restricts “SaaS” usage, it is considered Source Available.
However, in practical terms, you are free to use Tract Stack as though it were MIT open-source for almost all use cases. The only prohibited use is re-selling “Tract Stack as a Service” or a managed cloud version without explicit consent.
For Agencies & Developers
Section titled “For Agencies & Developers”If you’re an agency or developer looking to leverage Tract Stack for client work, you’re completely covered. Build as many sites as you want, charge your clients, and modify the code. As long as you aren’t launching a “Tract Stack Hosting” platform that competes with us, you are clear.
For Investors & Cloud Providers
Section titled “For Investors & Cloud Providers”Looking to offer Tract Stack as a managed service? We’re open to partnerships and licensing discussions. Contact us at hello@tractstack.com to explore opportunities.
Pricing Options
Section titled “Pricing Options”Self-Hosted (Free)
Section titled “Self-Hosted (Free)”- Full source code access
- All features included
- Community support
- O’Saasy License
Managed Hosting
Section titled “Managed Hosting”Looking for Tract Stack without the infrastructure management? Visit tractstack.com for managed hosting options with:
- Automated deployments
- Priority support
Commercial Support
Section titled “Commercial Support”Need help with:
- Custom implementations
- Enterprise features
- Priority support
- Training and consulting
Contact hello@tractstack.com for commercial support options.
License Text
Section titled “License Text”The complete O’Saasy license is available from LICENSE.md.
The O’Saasy License
Section titled “The O’Saasy License”Copyright © 2025, Adon Irani.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
No licensee or downstream recipient may use the Software (including any modified or derivative versions) to directly compete with the original Licensor by offering it to third parties as a hosted, managed, or Software-as-a-Service (SaaS) product or cloud service where the primary value of the service is the functionality of the Software itself.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Questions?
Section titled “Questions?”- General licensing questions: hello@tractstack.com
- Partnership inquiries: hello@tractstack.com
- Technical support: GitHub Issues
Tract Stack is made by At Risk Media with ❤️ for the web community.