Add SyncMarks Bookmarks and Link Sharing (#3885)

README.md

@@ -288,6 +288,7 @@ Software which allows users to add, annotate, edit, and share [bookmarks](https:
 - [Pinry](https://docs.getpinry.com/) - The tiling image board system for people who want to save, tag, and share images, videos, and webpages. ([Demo](https://pin.37soloist.com/), [Source Code](https://github.com/pinry/pinry)) `BSD-2-Clause` `Python`
 - [Shaarli](https://github.com/shaarli/Shaarli) - Personal, minimalist, super-fast, no-database bookmarking and link sharing platform. ([Demo](https://demo.shaarli.org)) `Zlib` `PHP`
 - [Shiori](https://github.com/go-shiori/shiori) - Simple bookmark manager built with Go. `MIT` `Go`
+- [SyncMarks](https://codeberg.org/Offerel/SyncMarks-Webapp) - Sync and manage your browser bookmarks from Edge, Firefox and Chromium. ([Clients](https://codeberg.org/Offerel/SyncMarks-Extension)) `AGPL-3.0` `PHP`
 - [xBrowserSync](https://www.xbrowsersync.org) - Open source tool for syncing browser data between browsers and devices. ([Source Code](https://github.com/xBrowserSync)) `MIT` `Nodejs`