Mikulas Calculator

Mikulas Calculator is a free simple program for mathematical calculations. More informations here

This program from a group of calculators rather uses a text editor to write a definition. Therefore writting is easy and quick.

Spheric View

is a tool for displaying images that appear at world coordinates.
It's for users who want to see their raster images on the celestial sphere. Especially FITS format is supported. Also transformation of images into FITS with WCS supported now. More informations here