Kumo is a web browser with a UI focused on portrait-mode touchscreen mobile devices. It is optimized to run on low-end hardware with a limited battery life.
Falkon Alternatives
Falkon is described as 'Formerly QupZilla, is a QtWebEngine based cross-platform web browser' and is a very popular Web Browser in the web browsers category. There are more than 100 alternatives to Falkon for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best Falkon alternative is Mozilla Firefox, which is both free and Open Source. Other great apps like Falkon are Zen Browser, Brave, Tor Browser and Google Chrome.