The best replacement for workspace is workspace.

The best alternatives to workspace are rated as following:
★★★★★  workspace
★★★★  project xcode
★★★  configuration space
★★★  project eclipse
★★★  profile autocad
★★★  site
★★  workbook
★  colligo
★  cubicles
★  groove
  work space
  groove workspace
  working set
  sharepoint server
  skydrive pro
  sharepoint site

Your alternative for workspace is not listed? Suggest!
Speaking about workspace, one probably shouldn't forget about eclipse.

Other search terms related to workspace and their ratings are:
★★★★★ eclipse
You have in mind a companion for workspace and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of workspace in all years. Click on graph for more.
workspace
workspace
project xcode