The 5 top most searched Data Warehouse Automation (DWA) tools compared with GoogleTrends is telling you that WhereScape is first before TimeXtender and BiReady (new Attunity Compose) over the last year. See the picture in full size or go directly to GoogleTrend comparison and change to your own needs.
Although the analysis is not representative, it still gives some insights and a good overview to size and presumably usage compared to each other, worldwide.
Please consider that WhereScape and TimeXtender have more search results as the company name is the same as their product, meaning some of them are dedicated to the company name rather the DWA tool itself. And BimlFlex just published their first release and biGENiUS is rather new to market their product actively, they will probably increase slightly in the soon future.
Tools on the market
As you can imagine, there are plenty of tools on the market. From open-source, to very expensive…