The ones that give you access to the most apps
Better Than Chromecast? 4K Google TV Streaming Box for $20
One of the main reasons why people are looking for an alternative to Google Chromecast is the lack of a standalone graphical interface and operating system. Anyone who currently owns a Chromecast can attest to the need for other devices for control and management, such as a PC or smartphone.
Another, and probably the biggest, reason would be that Chromecast is very limited in its compatibility with third-party streaming apps. You get all the popular apps like HBO Now, Netflix and Hulu, but more obscure apps are often a problem.
This, coupled with the constant need to switch between apps instead of a smooth installation, leaves many users looking for a better option.