WinFF is a graphical user interface for FFmpeg. It will convert almost any video file that FFmpeg will convert. WinFF does multiple files in multiple formats at one time. You can, for example, convert mpeg's, flv's, and mov's into avi's (or DVD/VCD format or MPEG or 3gp etc.) all at once.

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.

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.