Added Buku to Bookmarks (#3139)

README.md

@@ -242,6 +242,7 @@ _Related: [Polls and Events](#polls-and-events)_
 Software which allows users to add, annotate, edit, and share [bookmarks](https://en.wikipedia.org/wiki/Bookmark_(digital)) of web documents.
 
 - [Briefkasten](https://github.com/ndom91/briefkasten) - Modern app for saving and managing your own bookmarks. Includes a browser extension. ([Demo](https://briefkasten.vercel.app)) `MIT` `Nodejs`
+- [Buku](https://github.com/jarun/Buku) - A powerful bookmark manager and a personal textual mini-web. `GPL-3.0` `Python`
 - [dyu bookmarks](https://github.com/dyu/bookmarks) - Single-threaded/process bookmark app powered by leveldb and uWebSockets. Supports importing from Delicious and Chrome. ([Demo](https://dyuproject.com/bookmarks/)) `Apache-2.0` `Java`
 - [Espial](https://github.com/jonschoning/espial) - An open-source, web-based bookmarking server. `AGPL-3.0` `Haskell`
 - [Firefox Account Server](https://mozilla-services.readthedocs.io/en/latest/howtos/run-fxa.html) - This allows you to host your own Firefox accounts server. ([Source Code](https://github.com/mozilla/fxa)) `MPL-2.0` `Nodejs, Java`