There is now a new version of JPEGDeux that will run under Mountain Lion! I can't promise you that all the features are 100% functioning at the moment, but at least this is a start.
When I updated JPEGDeux many years back, I hadn't touched a single line of Objective-C/Cocoa before. My main goal was to get the application to run (and I did). Now that I'm starting some Objective-C for work, I thought it would be good to get back into JPEGDeux to sharpen my skills. I will finally have some time to spend with this project and leave it in an even better spot than I left it.... read more
After waiting for 2.5 years to see an update to JPEGDeux to fix a couple of minor annoyances, I decided to grab a copy of the source code and make the changes myself. I've made a gallant attempt at reaching Peter Ammon to work with him to correct this code, but all my e-mail has been returned (I tried his .mac and Cornell addresses); my apologies to Peter if this is the first you find out about this.... read more