Ready-made solutions for event websites

Question

CMS

Actually a subject. Interested in cms'ki to quickly create sites for seminars / conferences / events.
Speakers, program of the event, partners, registration, payment of tickets for participants through payment systems (for example, robokassa.)

Do not offer Bitrix. Preferably in php, because python and ruby ​​are not my profile.

I perfectly understand that there are WP, drupal, joomla, modx and others and others, but I admit that there are special solutions specifically for this task.

Answer 1

A separate CMS hardly exists, but there are special modules for the above.
For example for drupal . And a small manual for it.

Answer 2

SaS eTouches.com

Answer 3

For Joomla there is: www.joomlaeventmanager.net
But in the end I switched to Drupal.
If you find something interesting for the past time - share :)