ECC+ - EasyCalcCheck Plus
By Viktor Vogel
Protects Joomla! core forms and 3rd party extensions through the integration of anti-spam services and adds an arithmetic problem, a question, a hidden field and a time lock.
With the powerful custom call feature, every form can be protected in Joomla! with a special syntax.
Integrated external antispam services: Google reCaptcha v2, Akismet, Honeypot Project, StopForumSpam, Botscout