Bookmark OS is exactly what I was looking for: an ad-free, browser-based bookmarking service with excellent support to boot. It won me over with its clean design and solid functionality.
11/2/15
I've literally tried every bookmark manager out there and Bookmark OS is the best! I use it every day. Thank you!!
7/15/15
Amazing, this site has changed the way I use the web. Can't imagine surfing the net without it now.
9/23/15

Any web browser
Bookmark OS is a responsive website. Use it on your laptop, phone, or tablet.

Folder suggestions
Artifical intelligence learns the content of your folders and gives you folder suggestions when creating bookmarks. Find that perfect folder in one click!
Visualize your bookmarks
Web page screenshots are used as icons, giving you a useful way to visualize your bookmarks. This makes browsing easier by allowing you to recognize bookmarks without even reading. "Oh yea, I remember that hilarious gif of a tiny pug in a unicorn costume!"

Sort your bookmarks
Can't find a bookmark you opened last week? Click 'View all' and sort by last opened. Or maybe you remember a bookmark's site but not the exact name? Sort by domain. Sorting gives you new and powerful ways to organize your bookmarks.

Filter with tags
An active tag will filter any view that you are in. For example, you could enable a 'to read' tag, perform a search and it would only search bookmarks tagged with 'to read.' Tags also apply to nested folders, so if a tag is active, only folders that contain a bookmark with that tag will show.

Folder collaboration
Use cases include sharing resources for work, a teacher sharing resources with his/her students, or sharing recipes with friends. Once you invite others to your folder, any updates made to it will be automatically synced.
Keyboard shortcuts
Use keybord shortcuts to quickly navigate and interact with Bookmark OS. Find a bookmark and open it without leaving your keyboard. It has never been faster!

Safe and secure
Bookmark OS uses a robust backup plan, keeping your bookmarks safe and secure in the cloud. Never worry about losing them again.
But wait, there's more!
- Search is robust and shows results in real time as you type
- Easily create bookmarks with browser extensions and the bookmarklet
- Sync a backup of your bookmarks with Dropbox
- Import your bookmarks from any service
- Importing finds dead links and marks them with a caution icon
- Custom sorting allows you to re-arrange a folder's order
- Drag and drop supports moving multiple items at a time
- Fix duplicates with the duplicate resolver
- An 'undo' action is available for any unwanted moves
- There are tons of new features to come!
