Labs64 NetLicensing - Monetize your digital products and services
ProLease - ProLease helps organizations manage their leased, owned and subleased properties in one integrated system.
tl;drLegal - Software Licenses in Plain English
Yardi Voyager - Voyager is software for managing properties and the people who live there. The software is developed by Yardi, a company founded in 1984 that specializes in property management software. Read more about Yardi Voyager.
Keygen - A dead-simple software licensing API built for developers
DotLoop - Peoplework, Not paperwork.