z88dk is a collection of software development tools that targets z80 machines. It consists of a C compiler, a set of libraries implementing the C standard library, an assembler / linker and a variety of utilities for profiling and generating executables in a number of formats. Development in C, assembly language or a mixture of the two is directly supported.
The main contents of this wiki can now be found at http://github.com/z88dk/z88dk/wiki