Mollom Mollom is a freemium web service to get rid of spam, unwanted content and fake users on your Drupal, Wordpress and Joomla site or blog. Discontinued "The Mollom content moderation service is no longer available … as of 2 April 2018." Freemium Web Captcha Recognition Content analysis Software as a Service Add a feature 2 Like
CleanTalk Spam protection plugins for Joomla, WordPress, phpBB3, IP.Board, vBulletin and etc. Protection without CAPTCHA. Commercial Web No features added Add a feature 2 Like
Sblam! Open-source implementation of server-side spam filtering of blog comments and forum posts. It's available as a free web service. It's open source, so you can... Free Open Source Linux Web No features added Add a feature 2 Like
