GPaste!

RecentX gives you fastest access to your files, folders, programs, websites and also clipboard history in Windows. What's special is that it automatically remembers your recent and favorite items so that you can access them faster than searching all the files, folders etc. You can assign tags to all of them. You will be surprised to see how much hassle it saves and makes computing really enjoyable. We have stuffed this app with innovations that will boost your productivity.

1Clipboard is managerial clipboard software that enables you to approach clipboard at any place on any device.

Parcellite is a lightweight GTK+ clipboard manager. This is a stripped down, basic-features-only clipboard manager with a small memory footprint for those who like simplicity.

ClipIt is a lightweight, fully featured GTK+ clipboard manager. It was forked from Parcellite, adding additional features and bugfixes to the project.

Clibor is a portable lightweight clipboard manager that combines the functionality of a clipboard manager like Ditto plus the ability to format clipboard text. It is very flexible and customizable, having enough options to allow you to a tailor it to your exact needs. Here are the features listed on the developer's website:

Klipper is the KDE clipboard cut & paste utility.

Clipman is a clipboard manager for Xfce. It keeps the clipboard contents around while it is usually lost when you close an application. It is able to handle text and images, and has a feature to execute actions on specific text selections by matching them against regular expressions.

genius is a complete clipboard manager with system-wide shortcut support and many more features for windows and linux operating systems. genius is a free open source application

Supports clipboard formats: text, html, rtf, file, imageCaptures sender window title and process name for clipShows source URL for HTML clipFilter by marks "Used (Pasted)" and "Favorite" with keyboard shortcutsFilter by clip typeHot (as you type) text filter for clip listMarking used (pasted) clipsMarking filter matches in textMarking hyperlinks in text and Alt+click to open themMarking END of clip textMarking filter matches in listAllows to paste clip as original or plain text (selected or all)Repeated copy of any previous clip raises it to top of listMultilanguage UI (Russian, English)Searching back and forward filter text in textText filter and clip list share key presses, no need to change focusHistory is stored encrypted on diskSwitch "move just pasted clip to top"Edit clip titleEdit clip text modeMark/Unmark favorite clipsSupport for format "Clipboard Viewer Ignore" to respect password copy privacyAuto and manual check for new version and one click updatePortable modeAuto position window on open near text inputWindow always on top modeCommand to open clip as fileCommand to simulate char input (for windows isolated from clipboard)Support for sending paste and input to elevated windowsSwitch "Monitor clipboard"Switch "Monospaced font"Full support for difficult windows in paste commandText position indicator shows offset, column and line number, selection lengthClip list shows samples for picture clipsNative formatting mode for HTML and RTF clipsSwitch "Show clip source icon column" (default OFF)Command "Text compare" with support for Beyond Compare, ExamDiff Pro, WinMerge, Araxis Merge, DiffMerge and custom application"Hotkey to compare last clips" in Settings »

Aiming to be the best integrated clipboard manager for the Gnome/Unity desktop

Clipboard Master is a handy utility designed to keep all previous texts, pictures and files copied to the clipboard in a list, for later use. Organize your text modules and snippets and paste them in any Windows program whenever you like.Clipboard Master includes automatic and manual collections. Paste multiple items or only the part of an item. Search within the clipboard lists. Clipboard Master is optimized for use with your mouse and keyboard.Configurable hotkeys can be easily used. With Clipboard Master, you can even paste in temporary edit fields such as when renaming a file in the Explorer. Clipboard lists are kept even when restarting Windows. »

How many times you wanted to keep important, but hard to remember, information at your mouse click without leaving the browser?Now you can achieve it with Permanent clipboard.This extensions allows you to save browser clipboard element with friendly name at your fingertips. Now you can store things like phone number, answer templates for discussion forums or bank account numbers.

Glipper is a clipboard manager for GNOME.