There's been talk of doing an InstallMgr for Linux & Windows with a unified codebase. My proposition was to use wxWindows, but Troy pointed out to me why that won't be necessary.
Most of the InstallMgr code is cross-platform, thanks to Troy's port of VCL to Linux. To my understanding, InstallMgr already runs in Linux for copying modules from the CD. That means all that needs to be done is to add FTP capabilities using an off-the-shelf FTP library. We should also add login/password capabilities to InstallMgr, which should be pretty easy. This allows us to post beta & locked texts more privately. --Chris