What is Unity Station?

Its ss14 but on a different game engine? is it like the launcher that has various servers? or Unity Station is a stand alone version of ss14? is it active?

If you have played both what differences can you find?

Exploring their website it looks like they are short of man power? In its core it looks like ss14 but yet everything looks different. Kinda like evolution, its evolving differently

Space Station 14 is a “successor” to Space Station 13. Unitystation is a different project that has the same goals, but it’s using a completely different engine, code, etc.