Quick Look: Web Video Caster - Receiver lets you cast videos, images and audio to your Roku from an Android mobile device using the Web Video Caster app. You can cast videos stored on the mobile device, or cast videos embedded on websites using the browser built into the Web Video Caster app.
Both the app and Roku channel are free, but you buy an upgraded version that supports bookmarking and video queues and has no ads. And Web Video Caster isn't just for Roku, as it supports the following protocols: Google Cast (Chromecast, Chromecast Built-in, Android TV), Amazon Fling (Fire TV and Fire TV Stick), Play on Roku, AirPlay (Apple TV), and DLNA (most Smart TVs, XBox, most Miracast devices, etc). Keep in mind, however, that Web Video Caster doesn't decode video or audio, so your streaming device must support the format of the media you are trying to cast.
-- Information is current as of November 19, 2018
Roku Channel Store Description: Cast videos, images and audio from the web browser on Android to your TV.
CHANNEL STORE CATEGORY: Web Video
DEVELOPER: InstantBits, Inc