sbm keeps your bookmarks in one plain text file. sbm Sync keeps that file the same on each of your devices: bm on your computers, the sbm app for Android, and the sbm add-on for Firefox and Chrome. You can also use your bookmarks on this site, in any browser.
Coming: bookmarks for teams. The members of a team share one bookmark file, and sync it on each of their devices. Pre-order the founding plan: for up to 10 people, or for 11 people or more.
sbm Sync is free. To pay for the server and the work on sbm, become a supporter.
sbm Sync is free software under the AGPL-3.0. You can run your own server.