Maybe not any sector, but definitely across multiple sectors. We designed Proteus to be used by consultancies and project owners. If your business runs projects and follow some or all of the following work cycle then Proteus will work for you:
Search for and evaluate opportunities
Develop proposals
Deliver a project (selling manhours, software, hardware, or whatever you want)
Invoice, closeout
Repeat
You can change the terminology to suit your industry and company so that any of the above stages matches your work cycle.
You can use Proteus to improve your margins, streamline your processes and make your work more efficient.