The online retailer has spent nearly $300 million acquiring three shipping software vendors over the past nine months.
HP led Internet Explorer availability tests and two retailers tied atop the Firefox ratings.
HPShopping.com had the best availability score for Internet Explorer testing among large retailers measured in April, says Compuware Gomez. The retailer posted 100% availability in Internet Explorer tests. Dell.com and Walmart.com led Firefox availability tests tied at 100%.
Dell.com came in second place in Internet Explorer testing with an availability rating of 99.98%. Walmart.com (99.96%) came in third, QVC.com (99.95%) fourth and Toysrus.com (99.94%) followed in fifth place.
With a 99.99% availability score for April, Overstock.com was third in Firefox testing, following Dell.com and Walmart.com. LLBean.com placed fourth at 99.98% and HPShopping.com (99.95%) was fifth.
The average Internet Explorer availability score among the 23 retailers measured in April was 99.64%. The same group of retailers produced an average Firefox score of 99.74%.
Availability is determined by the percentage of tests in which the retailer’s web site loads correctly.
Click here for the full availability test results.