SAPIEN Software
Administrative tools to support all of your Windows scripting needs.The premier PowerShell integrated scripting and tool-making environment.
The leading Universal Scripting IDE for all your administrative and web-development tasks.
The essential tool for centrally managing all PowerShell modules installed on your machine.
The first professionally designed environment for writing and editing PowerShell help files.
Making database query development and testing a snap, regardless of your database type or vendor.
The simplest way to manage multiple versions of files on your computer.
Free Downloads

PrimalPad
Meet PrimalPad, the single file, color coding editor for VBScript, JScript, HTML, C++, C#, SQL and PowerShell.

PowerShell Profile Editor
PowerShell Profile Editor is a dedicated tool for managing and editing your PowerShell profiles.

PowerRegEx
Work with PowerShell? PowerRegEx allows you to export your expression for PowerShell use.