backup

• AutoBackups

  by Avtandil Kikabidze aka LONGMAN 28K Installs
  Sublime Text 2/3 Auto backups plugin

• Create Backup Copy

  by glutanimate ST3 2K Installs
  Sublime Text plugin that creates time-stamped backup copies of files

• PackageSync

  by utkarsh9891 21K Installs
  Sync sublime text packages & user settings across devices.