Phoca Maps 1.0.5 - this version uses Google Maps API 2. If you need functions like GoobleBar, Continuous Zoom, Overview Map Control, then download this version.
Phoca Maps 1.1.0 or any later version - this version uses Google Maps API 3. You need not to create Google Maps API key for your site but some functions are not included (API 3 is still in Google Code Labs - not ready yet). This version is under active development and includes more new features.
Alpha and Beta versions are designed for testing only. They should not be used on production sites.