Here you will find user’s guide, datasheets, whitepapers and further documents for O&O Defrag.
O&O Defrag 21 Professional Edition PDF Datasheet
O&O Defrag Server Edition PDF Datasheet
O&O Defrag 21 User’s Guide [online] [PDF download]
Whitepaper: O&O Defrag and the Windows Defragmenter: A comparison
O&O Defrag and Solid State Drives