Why would you need a Parse alternative?
You wanted to quickly ramp up a new mobile app, so you chose Parse to get it done. Excellent! It’s one of the oldest Mobile Backend as a Services (MBaaS) available. It’s mature. And it has a ton of great features.
The biggest “con” is that if it ever shuts down, you will have to quickly figure out the migration from Parse options.
Unfortunately, that day has happened. Parse just announced they’re winding down the Parse service, and Parse will be fully retired after a year-long period ending on January 28, 2017. That’s it! You have one year to get your stuff and move on. They claim they, “are proud that they’ve been able to help so many of you build great mobile apps”. But not so proud that they will continue the service.