Powerful and user-friendly selector utility for selecting elements and doing various actions on them. It can be used for cleaning up a page prior to printing it (by removing and isolating elements), and for web development
It can open archive file online and get the catalog. Currently, it support ZIP, RAR archives and ISO-9660 CD images. ArchView can support HTTP and FTP protocols. It can also handle local files via file: protocol.
Case changer is a very handy addon that lets you change any selected text into lower case, Sentence case, Capitalise Each Word, UPPER CASE and tOGGLE cASE.