I think there's probably not a device with the same set of capabilities of the chromecast at the same price, but on the other hand the chromecast is missing features that you can have on other devices that cost more or less the same (take rPi or one of the thousands of android usb stick) e.g. being able to play avi/divx files (it supports h264 in mp4 and mkv) or audio tracks in ac3 or dts (it supports mp3, vorbis and aac) without transcoding, or use some android apps like p2p streaming apps (sopcast). So the problem is that you can some things really easily (e.g. netflix or sharing from phone) but you miss some other that somebody is looking for (e.g. use it a good mediaplayer having quite an old pc and phone that can't be used for transcoding sources).

I've found some of these here[1] but owning no chromecast I can't do any test by myself.

[1] http://www.reddit.com/r/Chromecast/comments/1umk7t/lets_make...