Refined GitHub - Browser extension that makes GitHub cleaner & more powerful
Quick License Manager - Quick License Manager (QLM) is a license protection framework that creates professional and secure license keys to protect software against piracy.
GitZip - Download or create a download link for a GitHub project folder/sub-folder or file.
Labs64 NetLicensing - Monetize your digital products and services
GitHub Hovercard - GitHub Hovercard provides neat hovercards for GitHub.
LicenseSpring - Reliable and easy to use License-As-A-Service (LaaS) for for any software application