My company's got a handful of internal tools, but they're universally not useful to anybody else. We made a license creation tool that our manufacturing/sales t

My company's got a handful of internal tools, but they're universally not useful to anybody else. We made a license creation tool that our manufacturing/sales teams use to make licenses for the hardware we sell, we have a stack of powershell scripts that create a bunch of required documentation from our bug tracker, and I made some custom tooling that made building our (nightmarish proprietary-language software) project easier to build.