|"Keep-balance":install-keep-balance.html |Storage cluster maintenance daemon responsible for moving blocks to their optimal server location, adjusting block replication levels, and trashing unreferenced blocks.|Required to free deleted data from underlying storage, and to ensure proper replication and block distribution (including support for storage classes).|
|\3=. *User interface*|
|"Single Sign On server":install-sso.html |Login server.|Required for web based login to Workbench.|
-|"Workbench":install-workbench-app.html |Primary graphical user interface for working with file collections and running containers.|Optional. Depends on API server, SSO server, keep-web, websockets server.|
+|"Workbench":install-workbench-app.html, "Workbench2":install-workbench2-app.html |Primary graphical user interface for working with file collections and running containers.|Optional. Depends on API server, SSO server, keep-web, websockets server.|
|"Workflow Composer":install-composer.html |Graphical user interface for editing Common Workflow Language workflows.|Optional. Depends on git server (arv-git-httpd).|
|\3=. *Additional services*|
|"Websockets server":install-ws.html |Event distribution server.|Required to view streaming container logs in Workbench.|