Cygwin

POSIX-style development environment offering numerous command-line tools and packages without heavy virtual machines

Put code or text from multiple files up side by side for easy comparison and debugging

Opens and edits codes on the computer

Free, user-friendly utility that diagnoses and fixes common printing and scanning issues on HP devices

Application that helps software companies provide reliable installations

Two-dimensional game engine used to build characters that fight

Powerful circuit design and simulation tool for electropneumatic, electrohydraulic, and digital systems