Cura - Cura aims to be a end solution for personal 3D printing with RepRap based machines.
Slic3r - STL-to-GCODE translator for RepRap printers Here comes Slic3r! Its features are: - speed
Simplify3D - Professional 3D printing software streamlines the process of 3D printing, leading to better results.
Repetier - Software for controlling RepRap style 3D-printer like Mendel, Darwin or Prusa mendel.
IceSL - Welcome to IceSL!
OctoPrint - OctoPrint is the snappy web interface for your 3D printer that allows you to control and monitor all aspects of your printer and print jobs, right from your browser.