TabTrum is a Browser Extension (Currently available for Chrome) to take a snapshot of the open tabs, and open them all again in one single click when you come back and re-open your browser.
To contribute, please find the guidelines here - Contributing Guidelines
The Beta is now available via the release channel - bit.ly/tabtrumbeta
The Extension is made under the purview of the MIT License. You are welcome to fork and make changes to TabTrum but do attribute credits to the original authors.