Sun WorkShop TeamWare (later Forte TeamWare, then Forte Code Management Software) is a distributed source code revision control system made by Sun Microsystems.
TeamWare's largest deployment was inside Sun itself, where (bar a few exceptions) at one point it was the only VCS used.
TeamWare had been used to manage Sun's largest source trees, including those for Solaris and Java, but as part of the process of converting those code bases to open source communities, they were moved to newer revision control systems such as Mercurial.
TeamWare allows distributed development by copying a repository to another which might reside on another machine or network.
TeamWare is implemented as a layer over the older SCCS, which is used to track changes to individual files.