Tandem Code is a software development platform that enables teams to collaborate on building applications quickly and efficiently. It provides an easy-to-use interface for writing code, debugging, testing, and managing codebases. With its collaborative features, teams can easily share code snippets, view changes in real-time, and comment on each other's code. It also allows teams to easily manage versions, deploy code, and review pull requests. Tandem Code enables teams to develop robust applications faster, with fewer errors and improved quality.
Discontinued support will continue through March 2019, but there will be no new releases. http://muse.adobe.com/product-announcement-intl.html
The discontinued Macaw was acquired by InVision: http://macaw.co/invision/ The latest version, 1.6, released in January 2016, can still be downloaded from the official website.