I use console2 (make sure you grab the 64-bit version) + an autohotkey script to provide a "quake-like" console drop down... in which I use...

Powershell is extremely awesome; it's basically a c# console.

and...

Chocolatey and/or OneGet, Boxstarter, and myget.

Notepad++ <i>and</i> Notepad2. I use both, notepad++ for complex replacement tasks, notepad2 as my simple editor.

Puretext which strips formatting from text when pasting.

nimbletext.

See: http://mbrownnyc.wordpress.com/misc/my-toolchain/

Not sure if this is what you mean by "productivity tools," but these things greatly increase my productivity and reduce the time it takes for me to complete tasks.