Create copy
http://www.copyblogger.com/optimize-online-copy/
cgroups to control task cpu usage
syncthing limit resource usage
https://pulse-forum.ind.ie/t/syncthing-for-multiple-users-how-to-limit-the-resource-usage/1261
Access to libre base
http://extensions.libreoffice.org/extension-center/access2base
backups
http://andrioid.net/tech/linux/usb-backup
http://www.bacula.org/7.0.x-manuals/en/main/Disaster_Recovery_Using_Bac.html
http://www.bacula.org/7.0.x-manuals/en/main/Automated_Disk_Backup.html#SECTION002510000000000000000
http://www.bacula.org/7.0.x-manuals/en/main/Contents.html
http://www.techrepublic.com/blog/10-things/10-outstanding-linux-backup-utilities/
http://duncanlock.net/blog/2013/08/27/comprehensive-linux-backups-with-etckeeper-backupninja/
http://www.linuxjournal.com/article/9311
CiviCRM
http://wiki.civicrm.org/confluence/display/CRMDOC33/Tags+vs.+Groups+vs.+Custom+Fields
http://www.happysnowmantech.com/
http://wiki.civicrm.org/confluence/display/CRMDOC/Hook+Reference
http://devsummit.aspirationtech.org/index.php?title=CiviCRM_Extensions
http://wiki.civicrm.org/confluence/display/CRMDOC/Using+Drupal+Calendar+with+CiviEvent
https://civicrm.org/blogs/totten/customizing-civicase-workflows
https://www.drupal.org/project/civicrm_activity_ical
https://civicrm.org/blogs/colemanw/pushing-envelope-civicase
Mail and Cal gateway
http://davmail.sourceforge.net/
http://vimeo.com/40276619 unleashing the power of civicase
http://forum.civicrm.org/index.php?topic=1839.0 delete all contacts
http://www.backofficethinking.com/crm-constituent-relationship-management
http://wiki.civicrm.org/confluence/display/CRMDOC/Using+the+API