Hex-Rays IDA Pro Advanced version 6.1 (Plugins + Decompiler) | 116 Mb
IDA supports more than 50 families of processors. The source code of some of the processor modules is available in our free SDK. 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.