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Opera
Alternative Web browser with server-side compression for slow connections....
Opera Search
Opera Search - A small but very efficient widget able to perform web searches with Opera Software ASA's search engine service....
Opera Beta
Opera Beta (was Opera Next), updated every couple of weeks, gives you the latest refinements to the Opera browser....
Opera Mobile
Test and debug on Opera Mobile using your Mac....
Opera Glass
A beautifully designed Opera replacement icon....
Opera Turbo
Increase the browsing speed from limited-bandwidth connections...
Opera Mobile Emulator
Mobile development straight from your Mac's desktop...
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UnMHT for Opera/Safari
A free Safari and.or Opera UserScript that will allow you to view MHT files on your Mac...
ImgLikeOpera
A Firefox add-on that lets you load only the images you want in your browser....
OperaView
Mozilla add-on that opens pages in Opera from Firefox...
Validate at W3C
Validate at W3C - Contextual menu item in Opera to submit the current page to the W3C's HTML validator...