I just completed a SharePoint developer tool called SPDev.exe. The initial purpose of this utility is to auto-generate the web service WSDL.aspx and Disco.aspx files needed for a custom SharePoint web service.
After having to manually modify the disco.aspx and wsdl.aspx files by hand for the last three years, I finally found it tedious enough to create this utility. There are other tools out there, but they require you to enter information into a Windows UI, they are not script-able, and still felt to tedious for me. Call me lazy. :) Time is money. This tool is a command line utility. Simply execute the SPDev.exe command and your MyServiceDisco.aspx and MyServiceWsdl.aspx files are immediately ready for deployment. SPDev also allows you to script the process. Create a .cmd or .bat file and you’ll never have to enter any parameters again. Another big benefit is you don’t need to use the Disco.exe utility since SPDev uses IIS and .NET instead which will always be on your development machine – since you are developing for SharePoint. And, there are no temp files are generated (unless you want them generated).
Documentation for this utility is on my blog here: https://blog.crsw.com/spdev/