I've made the Mercurial source code repositories for my old SCUMM tools public, they've been published on BitBucket. I've also added links to the repositories on each app's info page. Hopefully, this will make it easier for people to fork their own versions of the code and make changes.
ScummSpeaks
http://bitbucket.org/jestar_jokin/scummspeaksScummPacker
http://bitbucket.org/jestar_jokin/scummpackerSCUMM Image Encoder
http://bitbucket.org/jestar_jokin/scumm-image-encoder Note that the SCUMM Image Encoder repository was merged from an old Subversion repo and a newer Mercurial repo, hopefully the merge didn't introduce any regressions.Scummbler
http://bitbucket.org/jestar_jokin/scummbler
DRO Trimmer and RobinPacker already have public source code repositories available, now they have a proper link on each app's info page.