Bookmark managers with mobile and tablet support

Bookmark OS is like Mac and Windows for bookmarks. It gives an intuitive and powerful interface for organizing your bookmarks.
Save your bookmarks in a visual card-based fashion similar to Pinterest. Has social sharing features built in.
Clipix is like a cross between a start page and Pinterest. The layout is very similar to Pinterest but you can bookmark more than just images.
Klart is self-titled, "Bookmarking for Designers" and lets you save screenshots of any website and organize them as bigger cards in a grid with tags.
Collect.io is an open sourced bookmark manager that will let you save your bookmark info on the backup option of your choice. It is still in development.
GGather is a bookmark manager with a great UI. It allows you to view your bookmarks as lists, grids, or Pinterest-like cards.
Openoox uses a card-like layout for managing your bookmarks and is available on desktop, mobile, and tablet.
Hypershoot captures full page screenshots of the web pages that user's bookmark and organizes them in a grid.
Dropmark is a visual way to organize links and is optimized for designers. It also has team collaboration features.
Clipd.io is essentially a moodboard for bookmarks that supports tags and full text search.
Bkmark gives you a nice layout for organizing your bookmarks with multiple layout options.
Contentle let's you save web pages, videos, and text in a list based format. It also supports folders and allows for contextual communication.
Larder is a self-described bookmark manager for developers. It is similar to Github issues but for bookmarks and gives you tags.
Saved.io is a simple bookmark manager that saves links into a list format. It also allows you to save urls by typing, "saved.io/" in front of any URL.
Crestify provides a list based user interface for viewing your bookmarks and supports tags and search.
DoMarks is an iPhone app that turns your bookmarks into to-do tasks.
histre organizes bookmarks in a list like tree and allows for saving info such as notes and highlights.
Shaarli is a self-hosted bookmark manager that you can install on your own server. It is mainly list-based and has the option of image previews.
Simple and Smart way to organize all of your Favorite Bookmarks, RSS Feeds, Notes and To-do Lists in One Place. More of a start page such as Start.me or iGoogle.
Cling has a layout that is similar to a start page but is slightly different in that the panels have lists of items. These items can also be notes, bookmarks, to-dos, and files.
LinkEmu is a startpage based bookmark manager that also allows you to save to-do lists.
Lasso is a bookmark manager that let's you save bookmarks as cards similar to Pinterest. You can also change to different views such as grid and list and sort as well.
Tuxio has a start page feel that has visual icons but also let's you add to-dos, files, and wikis as well.
Bookmark Ninja has a start page type layout and allows you to add categories, drag and drop, and use different column layouts.
Atavi is a start page based bookmark manager that also has a search engine input which you can change to the search engine of your choice.
Booky.io is a mobile optimized bookmark page with a start page layout with categories. You can also add colors to the categories.
Homepage Ninja is a start page that uses small colored icons as bookmarks on a grid and allows for organizing with drag and drop. It also supports to-do lists.
Wibki is a start page that structures your links as panels in a grid using website logos. The site is also mobile optimized.
History Search allows you to search through past websites and documents seamlessly by keyword and date range. As you browse websites, History Search will index the text of the website so you can find it later with a keyword search.
Fetching is a search based bookmark manager that builds a search index using the web pages you visit so that you can find a web page later with search.
Historious gives you full-text search for any web pages that you save and also gives you the option to save a cached version of the web page.
A free utility where you can keep all of your "favorites", bookmarked web pages, and notes online. Create a "Friends List" and share your links exclusively with those members.
Pinboard is a simple tag based bookmark manager. It's appeal lies in its focus on speed and minimal design.
Tagpacker offers the ability to organize your bookmarks with tags and view your bookmarks in a list-based format.
LinkAce is a self-hosted bookmark manager with a list-based user interface. Other features include tags and notes.
linkding is a tag-based self-hosted bookmarking option. It most resembles Delicious and is not heavy on design. However, you can customize your own design if you would like.
Organize your links in columns and boards similar to Trello. Allows you to save many tabs at once. Saves your links locally and not in the cloud.
Wallabag is a read it later app for bookmarking articles and works on every device similar to Pocket.
Pocket is an easy to use bookmarking site that is optimized for saving articles and reading them later on mobile devices.
Instapaper is an app that helps you read articles later by stripping out everything except the relevant text that you want to read.
Pinterest is the most popular image bookmarking website and has powerful collaboration features.
Trove is a privacy focused bookmark manager built on Blockstack, which is a de-centralized Blockchain. It is encrypted and provides a minimalist UI design.
Hush let's you save bookmarks from incognito mode in Chrome.
LinkLocker is a privacy focused bookmark manager that is completely private and has an API.
WebCull is a privacy focused way to organize your bookmarks that uses Stacks which are essentially folders in a list.