You will find in this archive the following C compilers from HiTech:
By default they are installed in the /usr/local/hitech directory.
If you want to move them elsewhere make sure to edit the 'htsoft.xml'
file to reflect these changes. Once you've finished editing copy
this file to '.htsoft.xml' in your home directory (mind the dot).
Add the relevant /usr/local/hitech/*/bin directories to your PATH
and start using the compilers.
---- extra info ----
I haven't modified the activation licenses but I've patched the
binaries to always return the same MAC address and never expire
(so you can use these licenses forever).