Cerious is a free Google Chrome extension developed by aldearianas5390 that aims to help English and Russian language learners save time while studying. The extension, currently at version 0.2, offers a convenient way for users to access important features and functions.

One of the standout features of Cerious is the ability to select any Russian word within the browser and access a variety of options through the context menus. These options provide quick access to main buttons and commands, allowing users to perform actions related to the selected word without having to navigate through multiple menus or pages.

However, it's important to note that the buttons in the context menus do not currently save the word in the extension. The developer has acknowledged this limitation and has promised to address it in future updates. While this feature may be missing in the current version, the overall functionality and time-saving potential of Cerious make it a promising tool for language learners.