Found these free, open-source applications that some of you may find useful.
Note: some of these are already quite popular, while some I hadn’t known about till now. Maybe you folks already have some [or even all] of these.
Video Player / Video Podcasting: Miro
DVD Ripping / Video Conversion: Media Coder
Word Processing: AbiWord
3D outer space/planetarium software: Celestia
Hard disc encrypter: TrueCrypt
WYSIWYG HTML editor: NVU
Cheers!