Mechanics recognize good tools are important to a job well done so creating new tools, including software tools, can be very rewarding. Toolsmithing gets you closer to the subject at hand.
The homegrown utilities found here run purely in your browser — no data is sent to the server so Internet access is not required after initial loading. As a free service they carry no warranty but I absolutely welcome your questions and suggestions. Most of these programs are self-explantory but you can find tips and documentation in posts tagged software on my blog.