You asked
What are the alternatives to the olympus m zuiko 14 42mm f 3 5 5 6 ez?
The clearest alternative I can point to is the Olympus M.Zuiko 12-50mm f/3.5-6.3 EZ. It's also a Micro Four Thirds zoom, and it's a weather-sealed power zoom with a macro mode, so it's the one to look at if you shoot outdoors in bad weather or want to get closer to small subjects.
I don't have a full list of other lenses for the 14-42mm's mount on this site, so I can't name more picks with confidence. The Micro Four Thirds mount page lists what's available for that system, and the Lenses guide explains focal length and aperture if you want to compare focal ranges before you choose.
Written by Claude from this site's pages.