Bookmark manager finder5 best Mybookmarks.com alternatives in 2021

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Voomark is a video based bookmark manager. It allows you to bookmark videos online and watch them later on your browser, Apple TV, iOS or Android devices
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Perma.cc is similar to wayback machine in that it preserves your bookmarks in case the website goes away.
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Unmark is a combo bookmark manager and to-do list. It treats your bookmarks as to-do items and helps you manage them.
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BibSonomy is a tag based way to manage scientific publications and bookmarks.
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Bookmark It let's you create annotations on Youtube videos and sync specific Youtube video moments to any device.