Vim is an almost compatible version of the UNIX editor Vi.

FDupes uses md5sums and then a byte by byte comparison to find duplicate files within a set of directories. It has several useful options including recursion.

KRuler is a tool for measuring the size, in pixels, of items on the screen.

GENtle is an open-source tool designed to facilitate molecular cloning, DNA/RNA sequence analysis, and plasmid design. It provides an intuitive graphical interface for visualizing and editing nucleotide sequences, creating and managing cloning projects, and simulating restriction digests. GENtle supports multiple formats for sequence import/export and includes features for primer design, sequence alignment, and annotation, sequencer data import, calculators, gel image display, PCR, and much more.

nobleNote is a program to organize and create notes. It has an icon in the system tray and supports drag and drop. The note-editor supports different fonts, font sizes and colors as well as background colors. You can also import notes from other programs like gnote and tomboy. The notes are saved in the html format.