Tools
As a developer, you begin to notice patterns with your workflow - such as requiring a hash, or generating a GUID, or even bulk replacing delimeters with new lines. I began to develop tools to perform these mundane, repetitive tasks, to help automate my workflow.
The result was slickhouse.com/tools:
I wrote it in .NET Web Forms, initially in VB (Visual Basic), but then rewrote it in C# too. The hosted app is C# and you can download a .zip file containing both the VB and C# code.