With that humble beginning, it has now grown into Cypal Studio for GWT. There were similar efforts to create an Eclipse plugin for GWT, but they never saw the light of the day. Since Cypal Studio is Apache Licenced, there were efforts forking this product, but I'm not sure how successful it was. People use Cypal Studio with commercial Eclipse offerings and even there is a nice tutorial on IBM Developerworks.
Today when I was adding all the download counts of Cypal Studio & Googlipse, it went well above the 1 Lakh downloads mark. In few weeks, I should be releasing 1.0 version and I'm also working with Google guys to add this tool to the Tools and Libraries page. Once both these happens, I'm sure that the download count will go up at a higher speed (currently its clocking at 250 downloads/day). Soon we will be touching the one millionth download :-)