video editing

Path editing tool for Illustrator users.

Goldberg is a freeware image and movie viewer with image editing capabilities

Jubler is a tool for editing text-based subtitles

Software for editing and playing guitar tabs. Learn the art of the guitar

Is a GPL licensed, cross platform multitrack audio recording and editing suite.

A powerful image editing tool that lets you create professional-quality images.

DVD post-authoring editing.

Notepad with some editing feature.

Image Tricks — photo and image editing software for Mac

Audio Editing for the rest of us!