Hex-Rays IDA Pro 6.6 Incl. Hex-Rays Decompiler | 149 Mb
The IDA Disassembler and Debugger is an interactive, programmable, extendible, multi-processor disassembler hosted on Windows, Linux, or Mac OS X. IDA has become the de-facto standard for the analysis of hostile code, vulnerability research and COTS validation. See this executive overview for a summary of its features and uses.