BSD 2-Clause License
Almost identical to MIT. Keep the copyright notice, that's it.
Commercial use
✓ Yes
Modify
✓ Yes
Distribute
✓ Yes
Must open source changes
✗ No
Must attribute
✓ Yes
Patent grant
✗ No
What this license means
The 2-clause BSD license is functionally equivalent to MIT for most purposes. Include the copyright notice and disclaimer in source and binary distributions. That's it. Used historically by BSD Unix derivatives and many academic projects.
When you encounter this license
Treat the same as MIT. No practical difference for most developers.
Watch out for
No patent grant (same as MIT). Some older code uses the 3-clause or 4-clause BSD variants which have additional restrictions.
This guide is for informational purposes only and does not constitute legal advice. For licensing decisions in commercial products, consult a qualified attorney.