Lichess Tools, developed by Siderite, is a Chrome extension that enhances the functionality of the popular chess website, lichess.org. With a plethora of features, this extension takes your chess experience to the next level.

One of the standout features of Lichess Tools is the Extended Interactive Lessons. This allows you to play all variations, enhancing your learning and understanding of different strategies. Additionally, the Explorer Practice feature enables you to play against moves in the Opening Explorer, helping you train against any rating bracket or specific opponent.

The extension also includes enhanced PGN Import in the Analysis board, allowing you to merge multiple PGNs into a single one. This is particularly useful for quickly collecting a player's repertoire and saving it as a study Interactive Lesson.

Lichess Tools also offers mobile device features, such as drawing arrows and circles, for browsers that support extensions on mobile devices. It also provides the option to change the friends box into a menu or a button, with live updates on the Friends page.

Other notable features include sound and voice notifications when players you follow start playing, TV enhancements for players you follow, and extra context menus for Analysis/Study move lists. The extension also allows you to show player country flags and game opening names, and provides custom chat buttons when playing.

Lichess Tools offers a comprehensive list of features that aim to improve your overall chess experience on lichess.org. It is a must-have extension for chess enthusiasts looking to enhance their gameplay and learning.