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emaila social bookmarking site.
This open-source social bookmarking service that allows you to tag, save, manage and share Web pages all in one place. With emphasis on the power of the community, linkhut greatly improves how people discover, remember and share on the Internet.
Your self-hosted bookmark archive. Free and open source.
Your self-hosted tool for effortlessly archiving, organizing, and sharing your favorite web links.
Slash is an open source, self-hosted platform designed to help you organize, manage, and share your most important links. Easily create customizable, human-readable shortcuts to streamline your link management. Use tags to categorize your links and share them easily with your team or publicly.
Stash Your Links, Revisit Anytime. Your Self-Hosted Bookmark Manager.
LinkStash is a self-hosted, backend-driven bookmarking and "read it later" solution, empowering you to take full control of your saved links and offline content.
Collect, organise, comment on and share links from around the Web.
Flus brings together news feed aggregation and social bookmarking in a modern way. It is designed as a simple, yet complete tool for organising the links you gather around the Web.
Source: Faire sa veille avec des logiciels libres @ Net Security 
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a single-user bookmarking website designed to live on the Fediverse.
Postmarks is a bookmarking site that you own yourself and can connect the Fediverse, interacting with other Postmarks sites as well as Mastodon/FireFish/any text-based ActivityPub platform.
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A privacy-focused, self-hosted bookmark management solution built with Ruby on Rails and Vue.js. Take control of your bookmarks and keep your data private by hosting it on your own infrastructure.
Bookmark Manager is a multi-user web application for managing bookmarks. It allows users to organize bookmarks into collections and categories, add notes, and assign tags. The app also supports importing bookmarks from a Netscape Bookmark file format and provides password reset functionality.
Open-source visual bookmark manager built with Next.js. Simple, and easy to set up.
HooknHold is an open-source project built with Next.js that empowers users to efficiently bookmark, organize, and manage their favorite web content.
Cross-browser bookmarks syncing.
Sync your bookmarks privately across browsers and devices.
Bookmark manager for the wizards 🧙
Glimpse into the magical book of your forbidden knowledge - Grimoire! 
Unleash your inner sorcerer and conquer the chaos of bookmarks! With Grimoire, you'll have a bewitching way to store and sort your enchanted links.
Readeck is a simple web application that lets you save the precious readable content of web pages you like and want to keep forever.
See it as a bookmark manager and a read later tool.
Simple bookmark manager built with Go.
Shiori is a simple bookmarks manager written in the Go language. Intended as a simple clone of Pocket. You can use it as a command line application or as a web application. This application is distributed as a single binary, which means it can be installed and used easily.
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Self-hosted bookmark manager that is designed be to be minimal, fast, and easy to set up using Docker.
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Generate a handy dashboard of links in seconds.
All-in-one bookmark manager.
Raindrop.io is the best place to keep all your favorite books, songs, articles or whatever else you come across while browsing.
We're not trying to reinvent the wheel; we're working on a tool that does everything you expect from a modern bookmark manager.
social bookmarking for introverts.
Pinboard is a fast, no-nonsense bookmarking site for people who value privacy and speed.
There are no ads and no trackers of any kind. Users pay a modest yearly fee.
Pinboard lets you bookmark from any browser, connect up Twitter accounts (and favorites), and sync with popular services like Instapaper or Pocket.
Do you want to share the links you discover? Shaarli is a minimalist bookmark manager and link sharing service that you can install on your own server. It is designed to be personal (single-user), fast and handy.
All-in-one bookmark manager. Intuitive. Powerful. Runs everywhere.
Raindrop.io is the best place to keep all your favorite books, songs, articles or whatever else you come across while browsing.
We're not trying to reinvent the wheel; we're working on a tool that does everything you expect from a modern bookmark manager.
The open source to-do application for bookmarks.
An open source, bookmarking service created by Colin Devroe and rebuilt by Plain.