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Linkman - Linkman Pro allows for managing large amount of URLs in its own database.
Pinboard - Pinboard is a personal archive for things you find online and don't want to forget.
Firefox Sync - Bring your Firefox bookmarks, tabs, or passwords wherever you go with Firefox Sync. Share between computers and mobile devices. Get Firefox now!
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Viralwalk - Teleport to amazing webpages all over the internet and discover new content