WikiFaves

– Manage a list of your favorite Wikipedia articles & keep a log of your Wikipedia browsing history

– Add a button on the bottom left of Wikipedia pages to favorite or unfavorite pages

– Open the extensions popup (in your browser's "Extensions" menu) to see and manage the list

– All data can be exported (and imported again)

The Wikipedia mobile app has a bookmarking feature, but the website doesn't. So, this app is meant to be something of a solution for that lack-of-feature.

All data stays on your devices. Your data is never sent to another server. Source code is publicly available on Github: