Online Monitor for WhatsApp is a free Chrome add-on developed by rizwansoaib. It falls under the category of Browsers and is a subcategory of Add-ons & Tools. This program allows users to receive notifications on their desktop and across multiple platforms when a contact is online on WhatsApp Web.

One of the main features of Online Monitor for WhatsApp is the ability to play a sound notification whenever a contact comes online. This can be useful for users who want to be alerted when specific contacts are active on WhatsApp. Additionally, the program allows users to save the online history of their contacts, which can be downloaded in CSV format for further analysis.

Another noteworthy feature is the access to online history via the web. Users can view the online activity of their contacts directly from the Online Monitor for WhatsApp website. Additionally, the program provides desktop notifications, allowing users to receive alerts even when they are not actively using the Chrome browser.

Online Monitor for WhatsApp also offers cross-platform notifications, meaning users can receive notifications on their Android, Macbook, Linux, or Windows devices without the need to install a separate app. This makes it convenient for users who want to track multiple contacts concurrently.

Overall, Online Monitor for WhatsApp is a useful tool for those who want to stay updated on the online activity of their WhatsApp contacts. With its various features and cross-platform compatibility, it provides a convenient way to monitor and track contacts' online status.