1. Dotty Compiler. http://dotty.epfl.ch/. Dotty Compiler. http://dotty.epfl.ch/.
2. Perennial Inc. Perennial C Compiler Validation Suite. http: //www.peren.com/pages/cvsa_set.htm. Perennial Inc. Perennial C Compiler Validation Suite. http: //www.peren.com/pages/cvsa_set.htm.
3. Plum Hall Inc. The Plum Hall Validation Suite for C. http: //www.plumhall.com/stec.html. Plum Hall Inc. The Plum Hall Validation Suite for C. http: //www.plumhall.com/stec.html.
4. Scala Compiler. http://www.scala-lang.org/. Scala Compiler. http://www.scala-lang.org/.
5. A. Balestrat. CCG. https://github.com/Mrktn/ccg. A. Balestrat. CCG. https://github.com/Mrktn/ccg.