two by two

Manage your files and folders using two panels of disks browsers.

Compare content of two folders and back up with visual comparison.

Compare content of two folders and back up with visual comparison.

Synchronize your files between two locations.

Measures the perceptual similarity between two WAV files in Linear PCM format.

Change file icon with color-coded or image-coded icon in two clicks.

Convert between two different video formats with ease.

These two C++ classes, bitin and bitout, facilitate bit input and output

Calculate age from given birth date or difference between two dates.

Detect the intersection between two sets of 3DFACE, 3DSOLID or 3DMESH in AutoCAD or ZWCAD.