QFA with non-tape device (also: an "rmt" that support tape-like CD access?)
It would be nice to add QFA support for non-tape devices (i.e. for backing up to several CDs). Isn't that pretty easy to do?
Also, I've been thinking about making a hacked rmt that makes CD writing look like a tape, with support for basic MTIO emulation. That way, any tape-oriented backup can use CD without special code, if it supports remote tapes. OR, use fusd to make a user-space fake tape device for local access. BUT, it looks like dump is already doing OK with CDs, so maybe that's all just too much work.
An open, cross-platform journaling program.
A scientific plotting package.