IDA Plugins

IDA Inject

An IDA Pro plugin to inject dlls into the debuggee.
Injection can occur either prior to process execution or after the debugger has been attached to a process.
The plugin comes with source code and can be found here.

IDA Stealth

This IDA plugin implements various countermeasure against anti-debugging tricks employed by the most common packers/protectors.
The plugin can be found here.

N-Coverage Plugin

In combination with the N-Coverage program, this plugin offers a way to visualize which functions have been executed during runtime of an application or library. For more information see the N-Coverage site.