About 7-zip

Command line script

c:\work\> c:\progra~1\7-zip\7z a -r -mmt  -mx9 conflicts.7z *conflicted*.*
  a: add to archive
  -r: recursive
  -mmt: (multi-threaded)
  -mx9: ultimate compression
 conflicts.7z (destination archive)
 *conflicted*.* (wildcard string to archive)