PowerShell

Show how DPAPI, the Windows API for safe data storage on disk works, and reveals how it's possible to recover all the previous passwords used by any user on a system. Provides an open-source tool for DPAPI data decryption and previous password extraction called DPAPIck.

I need to play with this and see about maybe finally making that combined source control module...

ConEmu is a Windows console app which can host multiple console apps (DOS, PowerShell, TC, Bash) as tabs and even support running some tabs elevated

ConEmu is a Windows console app which represents multiple consoles (even if some of them are elevated) as tabs, and supports simple GUI applications as one customizable GUI window with various features.

Using RunAs with PowerShell sessions

"Stats, Signal processing and Optimization packages."

Windows Explorer Shell Extension to support creating, editing, viewing, and deleting junctions, symlinks, hardlinks etc.

An open source robocopy clone as a PowerShell/C# Script/Cmdlet

This post covers how to setup mercurial(HG) as are local source control repository to sit in front of a Team Foundation Server .

A nice post by Tobias detailing the ModuleHelper module which lets you dynamically generate a module from functions you have loaded in your session.

A simple CI server as a web endpoint in C# that calls PowerShell (or, you know, whatever).

Using breakpoints with an action block to simulate tied variables. I posted a version of this to http://poshcode.org/2750

Deveel ReadLine is basically a .Net/Mono project for implementing interactive input editing and parsing similar to GNU Readline

ServiceStack JsonSerializer is based on JSV (the fastest text serializer for .NET), and is over 3.6x times faster than the BCL JsonDataContractSerializer and is around 3x faster than NewtonSoft JSON.NET (the previous fastest JSON serializer benchmarked).

PowerUp is a simple, language neutral, Powershell based build and deployment framework

"Select columns and sort results in the data grid, then let PowerSE automatically generate the accompanying PowerShell."

PowerChumby is a Perl CGI script and a PowerShell module that gives you a PowerShell way of controlling your Chumby.

Covers the use of [CmdletBinding(PositionalBinding=$false)] and why you might need it.

McAfee is committed to your security and provides an assortment of free McAfee tools to help in your software development.

The WPF control for Bing Maps has been released (in beta)