BTC Monitor is a Chrome extension developed by arvitaly that allows users to monitor currency rates on the BTC-e exchange in real-time. This handy extension can be accessed from any browser tab through its toolbar icon.

One of the main features of BTC Monitor is the ability to set sound notifications for desired currency rates. This means that users can stay updated on their preferred rates without constantly checking the exchange.

The extension also provides comprehensive information about all currencies, including buy and sell rates, as well as volume, in a convenient popup window. This data is sourced directly from exchanges such as Wex.nz, Liqui, YoBit, and Exmo, ensuring accuracy and reliability.

Additionally, when hovering over the toolbar icon, users can view detailed currency pair information, including buy and sell rates, as well as volume.