English is broken, it does not distinguish between free beer and free speech. Spanish on the other hand, distinguishes between gratis and libre. Free software is libre software.
|--Miguel de Icaza|
SQLUnit is libre software. It is also gratis software, but if someone wants to earn money by installing, customizing or training people about it for a fee, I dont see any problems with that. SQLUnit is distributed under the terms of the GNU General Public License, which gives you the right to copy, modify and re-distribute it either in source or binary form. Using SQLUnit does not obligate you to contribute back to the project any enhancements or fixes you make to it, but we appreciate the gesture if you do so.
The full text of the GNU General Public License can be found here.