links for 2009-07-15 Open Atrium Project management software built on top of Drupal (tags: projectmanagement drupal opensource basecamp) Down for everyone or just me? Site to send to people who wonder if a site is down when it isn't really down. (tags: website utilities pingdom availability testing) Hivelogic – Meet Mercurial Video exploring mercurial version control system (tags: mercurial versioncontrol subversion cvs video tutorial)