"What OSS tools and IDEs are making your devs so happy, and making their jobs better than say, VS 2012?" You will believe that I am joking, but Vim, bash, git,

"What OSS tools and IDEs are making your devs so happy, and making their jobs better than say, VS 2012?" You will believe that I am joking, but Vim, bash, git, grep, gdb, valgrind, llvm and lots of UNIX tools. We use IDA Pro a lot too. Most of the people that work with me learned with Microsoft tools, myself included but we can't stand it anymore. Why? They are so powerless and limited, specially in the extension mechanism: extending it using your own tools, which basically do 90% of our work. The main reason for that is that commercial companies can't let you do what you want, they can't let you do what you need like reading the system internals like with linux system utilities(Windows or Apple monopolizes access to it making amazing tools like Numega SoftIce dead) and even reading the source code. We use VS 2012 and Xcode for compiling Windows and Mac versions of our software, that is mainly designed and tested in pure Unix.