Hubspot COS
35,785 websites

Hubspot COS offers both free and paid options

https://www.hubspot.com/products/marketing/content-optimization-system

Build a powerful website that’s optimized for every device, personalized for every visitor, and integrated with all your marketing tools – right out of the box.

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Tumblr
386,778 websites

Tumblr is free to use

http://tumblr.com

Tumblr is a re-envisioning of tumblelogging, a subset of blogging that uses quick, mixed-media posts. The service hopes to do for the tumblelog what services like LiveJournal and Blogger did for the blog. The difference is that its extreme ...

Market Share by Top Websites

1 Tumblr is leading in Top 1M Sites and The Entire Web.

2 Hubspot COS is leading in Top 10K Sites and Top 100K Sites.

Websites Categories

1 Tumblr has better usage coverage in more websites categories. Including Arts & Entertainment, Adult, Games, Lifestyle and 17 other categories.

2 Hubspot COS is leading in Business & Consumer Services, Finance and Heavy Industry & Engineering.

Geography

1 Tumblr is leading in most countries, including United States, Canada, United Kingdom, Germany and 127 other countries.

2 Hubspot COS is leading in Norway, Pakistan, Nigeria, Iran and 23 other countries.