Editor in Chief
You can now check out Microsoft's Cortana, even if you don't have a Microsoft phone or Windows 10 on your PC. Microsoft just made the Cortana for Android app available on the Google Play Store.
There is a caveat. It's just the beta version right now, and only for folks in the US. The Cortana for Android app isn't fully functional yet, but it can supposedly do most of the things you can do on a PC or Windows phone. The main thing it can't do yet is voice commands on Android.
For those who are curious to see how well Cortana performs on an Android, you can get the beta version here: Sign in - Google Accounts