SmallAda - A compiler/interpreter for a part of the Ada language, namely the "Pascal subset" plus the Ada tasking support. It is not intended ever to be a full Ada compiler, rather a vehicle for teaching, learning, and experimenting with concurrent programming. The compiler is quite fast, producing P-code which is then interpreted by the interpreter. (ZIP)
Spark - SPARK, SPADE high-integrity software development products; annotated Ada subset supports developing software for uses where correct operation is vital for safety or business integrity; versions based on Ada 83/95. [Praxis Critical Systems Ltd.]
