A Chrome Extension
For users not able to have dual monitors available, Dualless is the extension solution that’ll support a user with their interaction and productivity.
When added to chrome, Dualless is able to split your browser windows into two by just 2 clicks, whenever needed. It is really simple to choose the ratio required too. By clicking the icon, you are able to adjust according to your needs. You can have a browser window showing on the left or right that occupies as low as 30% of your screen, leaving the rest to your other windows. Likewise, you can split your screen to a top and bottom view too!