The latest Internet Retailer Top 500 Guide lists ChannelAdvisor as the most popular software in the Marketplaces and Comparison Shopping categories.

The "IR 500" ranks the 500 largest web merchants in North America based on annual web sales. ChannelAdvisor is also listed as the second most popular solution for Paid Search and third for Rich Media.

"ChannelAdvisor is quickly becoming the standard for the world's top e-commerce brands," said ChannelAdvisor President and Chief Operating Officer David Spitz. "We've invested heavily in our platform and our people over the last decade, earning us the most comprehensive e-commerce solution on the market. We take great pride in the fact that every component of our platform was awarded this year as best in class. We now power half of the IR 500 top 10 and 30 percent of the top 100, and we're honored to be trusted by the top brands in retail."