SessionSaver Chrome extension saves the session - open tabs - so that it can be resumed later. Chrome, sort of, does this on its own when browser closes or crashes. However, check the list of features:
* Saves all tab urls for all chrome windows. * Saves multiple sessions with custom names. * Loads all urls from saved session to current window in new tabs. * Can view all urls to copy/paste from. * Can save tabs just for current window. * Can close saved tabs. * Export all saved sessions to bookmarks.