IDA Support: Download Center

IDA SDK 6.8: develop processor modules, loaders and extensions - extended with the source of 30+ modules and 20+ loaders. Please check out the SDK documentation online. NEW!
Flair 6.8 add your own compiler libraries to the FLIRT engine.
Tilib 6.8 create your own type libraries.
TVision 2015 library for the IDA text interface (source code)
Loadint 6.8 create your own disassembler comment databases
idsutils 6.8 create your own IDS files from DLLs.
Qwingraph v1.10: source code the Wingraph we use and modified (GPL).
PIN tool: the source code of our PIN tool. It creates a debugger backend out of Intel's PIN framework

stealth: stealth against anti-debugging tricks.
findcrypt: identifies some frequently used block ciphers.
highlighter: highlights code that has been single stepped through in a debugging session.
unispector: extracts unicode strings from an IDA database.
IDA, Python and Qt
Using custom viewers from IDAPython
Also, be sure not to miss plugins contest pages; they offer many useful & interesting plugins!
By year: 2009, 2010, 2011, 2012, 2013, 2014

Note: these packages should be extracted into IDA's directory.

User Contributions

Ben Byer has kindly contributed the NEC V830 processor module
Andrew de Quincey has contributed his Samsung SAM8 microprocessor module and a plugin that generates files compatible with the SAMA assembler.

Shawn Hoffman's PE exception handler
Dieter Spaar's COM Interface Plugin
Sobek , a simple data-flow analysis plugin by JF Michel.
Dean Ashton's PDBPlus.
J.C Roberts has contributed his IDB_2_PAT plugin.
The strucrec plugin, by Halvar Flake.
Class Informer plugin by Sirmabus to reconstruct C++ classes using the RTTI info

Reginald Wong's Visual Basic Disassembly IDC script , to assist in the disassembly of VB5/VB6 hostile code. Updated Apr 2014.
Dietrich Teickner's this Delphi constants and class definitions script.
Leonid Lisovsky's h2enum script, which converts C/C++ header files to IDA enums. Nice if you have no TIL files.
Huang Yu has contributed an idc script that is useful in the analysis of PDR files (port drivers).
Toshiyuki Tega offers is MAP loader script (VC++ and Borland C++)
An anonymous contributor has offered his script that defines SFR and bit names for Microchip's 16F84 PIC processor but can be used as a template for other processors
JC Roberts's dumpinfo script.
Tom Hayes has contributed his Pentica-B import script for the H8-8300.
Tom also gave us another script that improves the inital H8 autoanalysis

symload, by Dainis Jonitis.
Atli Mar Gudmundsson 's set of extremely useful PE utilities .
Tom Hayes has contributed a few utilities that could be useful to H8 developers.

Feel free to contribute to our user's community, either publically or anonymously!