What is Lift Framework?
What is Phoenix Framework?
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What are the cons of using Lift Framework?
What tools integrate with Lift Framework?
The Framework is new but has what it takes to take your apps to the next level, right now rails 5 is beta with ActionCable to make real time but I must say ruby isn't the right tool for doing real time but Elixir is really fast and has great concurrency and other erlang features.
Play is a central framework/component/library (not sure what to call things these days) in Scala. We <3 Scala, and therefore we <3 Play.
Play is on of several frameworks we are prototyping and vetting for various public-facing websites, and may ultimately be the framework behind the main datapile.io website.
I used Play to build a configuration UI for the service, which let you create and manage the menus (a hierarchical tree of options and actions).
I've used Lift on several web apps for Banks, as well as some private projects.