LocalCast / AllCast
Next, we want to recommend two of the best all-around apps for the Chromecast. The first one is LocalCast, and it lets you send photos, music, videos and more stored locally on your device. Basically, browse your device and send anything from your smartphone to the TV.
You can cast PDF files, locally stored content, files from the cloud and more. If you have a huge collection of videos on Dropbox, use LocalCast to send it to your TV.
AllCast is a similar app that's extremely powerful. In fact, you can "cast" right to an Xbox 360 and other devices using this app. Give them both a try and do more with your Chromecast devices.