SolarCalc is a program for estimating the solar radiation and electrical energy yield in a given site around the world. The software has been written in Qt and uses the most recent models of solar radiation conversion by PV effects. The software can take into account many aspects of solar systems such as detailed diffuse/beam correlation models, temperature effects, and shadowing effects. The system allows you to build a user-based archive of components, like solar panels and inverters. Many printing and exporting functions are available, as well as ready-to-use PDF report export.
LettersFall 2 is a word game that combines Tetris and Scrabble. It is a fun yet educational game for both children and adults. It downloads and installs in seconds. It features full color, high resolution visual graphics, digital sound effects, a digitally orchestrated music soundtrack, easy-to-play mouse controls, an American English dictionary with over 20,000 words, a saved high scores table, and saved game preferences.