License

Trueno-DB is released under the MIT License, one of the most permissive open-source licenses.

What This Means for You

The MIT License grants you the freedom to:

  • ✅ Use commercially - Deploy Trueno-DB in commercial products without fees
  • ✅ Modify freely - Adapt the code to your specific needs
  • ✅ Distribute - Share original or modified versions
  • ✅ Sublicense - Include in proprietary software
  • ✅ Private use - Use internally without publishing changes

The only requirements:

  • 📄 Include the license - Keep copyright notice in distributions
  • ⚖️ No warranty - Software provided "as is" without guarantees

Full License Text

MIT License

Copyright (c) 2025 Pragmatic AI Labs

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.

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.

Why MIT License?

We chose the MIT License for Trueno-DB to:

  1. Encourage adoption - Zero barriers to commercial or academic use
  2. Foster innovation - No copyleft restrictions on derivative works
  3. Industry standard - Compatible with most corporate legal policies
  4. Simple compliance - Just include the license text

Dependency Licenses

Trueno-DB builds on excellent open-source libraries. Key dependencies and their licenses:

Core Dependencies

DependencyVersionLicensePurpose
trueno0.6.0MITSIMD compute library (AVX-512/AVX2)
wgpu22MIT/Apache-2.0GPU compute (WebGPU backend)
arrow53Apache-2.0Columnar data format
parquet53Apache-2.0Parquet file reader
sqlparser0.52Apache-2.0SQL query parsing
tokio1MITAsync runtime
rayon1.8MIT/Apache-2.0CPU parallelism

License Compatibility

All dependencies use permissive licenses (MIT, Apache-2.0) that are fully compatible with commercial use:

  • MIT License: Allows unrestricted use with attribution
  • Apache-2.0: Similar to MIT with explicit patent grant

Result: You can use Trueno-DB in commercial products without copyleft concerns.

Third-Party Notices

When distributing Trueno-DB, include license notices for:

  1. Apache Arrow - Apache License 2.0 (columnar format)
  2. wgpu - Dual-licensed MIT/Apache-2.0 (GPU backend)
  3. trueno - MIT License (SIMD library)
  4. Other dependencies - See Cargo.toml for complete list

Run this command to generate a full dependency license report:

cargo install cargo-license
cargo license --authors --do-not-bundle

Attribution

If you use Trueno-DB in your project, we appreciate (but don't require) attribution:

Powered by Trueno-DB - GPU-first embedded analytics

Contributing

By contributing to Trueno-DB, you agree that your contributions will be licensed under the same MIT License. See Contributing Guide for details.

Questions?

For licensing questions, contact:

Additional Resources

See Also