A coworker and I recently started a website where we host the various opensource tweaks we write for our company, Dental On Line. There is not a lot available right now, but you can already find a few KDE patches:
- The (in)famous Flash installer for Konqueror
- Some KDEPIM patches
- A patch to embed PyQt widgets in KDM
Anyway, the address is http://opensource.dental-on-line.com, we may even add more content later 
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Flash Installer
Why is the flash installer not part of Konqueror by default? I almost wrote this exact thing myself because I was so frusterated it was not part of the system...
Bobby
It's a timing problem
It's a timing problem: when Benoît (the author of this patch) first submitted the patch, it was too late to include it in 3.5. He tried again a few days before 3.5.4 got frozen, but I think it was too late again.