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Pro Clipboard viewer
You can see the various clipboard formats, with hexa dump.
Hit Ctrl+Shift+V (or any other chosen shortcut) and you have a menu of recent clipboard entries (text, image, etc.). Choose your entry (with preview in tooltip) and it is pasted in your application.
Pro Supports templates
You can copy an entry to your templates, organized in folders.
So you can quickly recall frequently used strings (URLs, signatures, etc.).
Pro Plugins and tools
Plugins allows to support more clipboard formats.
Tools can alter text in clipboard before pasting it.
Paste a text or an image even after having made several copies after it. Allows to copy several snippets, then to paste them out of order, or in order.
CLCL has template management, allowing to paste frequently used text fragments; it can manipulate the clipboard content; and has a clipboard viewer showing the various clipboard formats.