1. SeamlessSQL (2008),
http://www.bugfreesql.com/
2. Optim pureQuery Runtime (2009),
http://www-01.ibm.com/software/data/optim/purequery-runtime/
3. Bison parser generator (2010),
http://www.gnu.org/software/bison/
4. Eclipse IDE (2010),
http://www.eclipse.org
5. IntelliJ IDEA (2010),
http://www.jetbrains.com/idea/