Ditto, Maccy, CopyQ, Dropzone, Clippings, Clipy, CLCL, ClipIt, Yoink, FastKeys, ClipAngel, Copy Bubble, Clipstory, Clipboard Indicator, RecentX, PastePal, Spartan multi clipboard, GPaste, Pasteboard Viewer, ClipClip, Clipboard Help+Spell, Dropshelf, Oka Paste, AutoHideMouseCursor, ClipboardFusion, Free Clipboard Viewer, Clipboard Share, Clipboard History Manager, Glipper, ShoveBox, Copycat, ClipTray, Save.me, DragonDrop, Windows Cursor Hider, MyClip, Detoclip, DragQueen, IntraClip, Clipboardic, AureoSoft XtraPaster, ClipMem 3, Clipboard Helper, Clipcomrade, clipLogger, Clipdroid are some alternatives to Unclutter.