OMU is a free Chrome extension developed by mike.chen. It falls under the category of Browsers and is specifically classified under Add-ons & Tools. As the name suggests, OMU is designed to help users open multiple URLs simultaneously, making it a handy tool for those who frequently need to access multiple web pages at once.

With OMU, users can easily open multiple URLs in one go, saving valuable time and effort. Whether it's for research, website management, or any other tasks that require accessing multiple web pages, this extension provides a convenient solution. Simply input the desired URLs in the extension's interface and click a button to open them all at once.

However, it's important to note that opening too many web pages simultaneously can lead to significant memory consumption. Users should exercise caution and be mindful of their device's resources when utilizing OMU.

Overall, OMU is a useful Chrome extension for those who need to open multiple URLs quickly and efficiently. Just remember to manage your system resources accordingly to avoid any performance issues.