StumbleUpon discovers web sites based on your interests, learns what you like and brings you more. Using a combination of human opinions and machine learning to immediately deliver relevant content, StumbleUpon presents only web sites that have been suggested by other like-minded Stumblers. Each time the Stumble button is clicked, the user is presented with a high quality web site based on the collective opinions of other like-minded web surfers.
Pearltrees lets you organize all your interests.
Pearltrees is a free service that lets you organize, explore and share everything you like. Add web pages, files, photos or notes and organize them naturally. Explore amazing collections that relate to your interests and subscribe to their updates. Access your account anytime and share anything from your computer, mobile and tablet.
Save webpages to read later, and eliminate cluttering of bookmarks with sites that are merely of a one-time interest. With Pocket, you can read at home, work, on the plane, or during your commute; even without an internet connection.
Pocket is available as a bookmarklet, as a Chrome addon, integrated in Firefox, as several unofficial browser addons, and as a mobile app available for a variety of platforms.
Raindrop.io saves not just bookmarks but associated content depending on page type.
Supports articles, photos, videos, presentations, website screenshots and more. Supports all your favorite sites
If it's an article, it will be cut and saved with the bookmark. The same applies to video, photo and presentations. So you can organize thematic collections with different content.
Available from a web interface, browser extension & mobile apps.
Diigo - Your Learning, Simplified.
Collect Save and tag your online resources for easy access anytime, anywhere
Annotate Annotate web pages and PDF's directly as you browse online
Organize Organize your links, references and personal input to create a structured research base through Outliner
Share Share your research with friends, classmates, colleagues or associates
Think of Pinterest as a virtual pinboard — a place where you can create collections of things you love and "follow" collections created by people with great taste.
People use Pinterest to collect and share all sorts of things -- wedding inspiration, favorite T-shirts, DJ equipment. You name it, people are pinning it.
We know you have great taste in something. Our mission is to make Pinterest the best place for you to share your taste with the world.
Google Bookmarks is a free online bookmark storage service, available to Google Account holders. It allows one to bookmark favorite websites and add labels or tags, and also notes.
Users can access their bookmarks from any computer by signing in to their Gmail account. The bookmarks are searchable, and searches are performed on the full text of the bookmarked pages, not just the labels and notes.