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.

VS

phpBB
37,013 websites

phpBB is free to use

https://www.phpbb.com/

Since its creation in 2000, phpBB has become the most widely used Open Source forum solution.

Market Share by Top Websites

1 phpBB is leading in The Entire Web.

2 Hubspot COS is leading in Top 100K Sites and Top 1M Sites.

Websites Categories

1 phpBB has better usage coverage in more websites categories. Including Games, Vehicles, Science & Education, Community & Society and 10 other categories.

2 Hubspot COS is leading in Computers Electronics & Technology, Business & Consumer Services, Arts & Entertainment, Finance and 6 other categories.

Geography

1 Hubspot COS is leading in most countries, including United States, United Kingdom, India, Canada and 87 other countries.

2 phpBB is leading in France, Russia, Germany, Poland and 61 other countries.