Do you mean Zebra Danios?
It depends on the tank size, Zebra's are fast and they swim constantly which means they prefer a nice long tank like a 20 gallon long or even larger ^_^ Compatibility wise and parameter wise, yes you can keep them together but I don't suggest it if you have a 10 gallon with all these fish in it. Platies and guppies are very messy fish and just adding more fish to the mix might not be so good. Again, this is assuming you have a 10 gallon tank, if it is larger please let me know ^_^