Genius is an arbitrary precision integer and multiple precision floating point calculator. It includes its own programming language similar in some aspects to C, bc, or Pascal. It can deal with rational numbers and complex numbers. It has matrix support as well. It uses the gmp library so it is very fast for calculations of large numbers. It has a command line and a GNOME interface. The GNOME interface supports plotting functions and 3D surfaces.
Resize Image Nautilus Script is a Bash script extending Nautilus, the GNOME file manager, to easily resize images using ImageMagick, e.g. to create files suitable for sending by email. The script resizes selected files to the given pixel width/height and saves them with the same file name in a new sub folder (e.g. "1024px"). Existing files in the resize target sub-folder will not be overwritten. Different sizes can be directly chosen in the Scripts sub-menu of a file's context menu.
TaylorType is a program that speeds up the creation of LaTeX documents. It will compile any LaTeX document you give it with a single click. The emphasis is on a very lightweight and simple GUI. The only interaction happens in the system tray, with two file selectors and a checkbox.