Vortex Language-independent optimizing compiler infrastructure for OO and other high-level languages, coded in Cecil, whole-program optimizer with aggressive analyses and optimizations. Front-ends: Cecil, Smalltalk; C++, Java; Modula-3. Outputs portable C++, SPARC assembly. http://www.cs.washington.edu/research/projects/cecil/www/vortex.html

Amsterdam Compiler Kit (ACK) An integrated collection of programs designed to simplify the task of producing portable (cross) compilers and interpreters. http://www.cs.vu.nl/vakgroepen/cs/ack.html