Keygen - A dead-simple software licensing API built for developers
Coverity Scan - Find and fix defects in your Java, C/C++ or C# open source project for free
Labs64 NetLicensing - Monetize your digital products and services
SonarQube - SonarQube, a core component of the Sonar solution, is an open source, self-managed tool that systematically helps developers and organizations deliver Clean Code.
LicenseSpring - Reliable and easy to use License-As-A-Service (LaaS) for for any software application
Embold.io - Peer Code Review