Comparison of event registration/signup modules

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Module 6.x? 7.x? 8.x? Notes Last official release Info updated on
Node Registration - Yes - Actively maintained. 2015-Jan-27 2015-05-20
Signup Yes Dev - Actively maintained. 2011-Jan-09 2015-05-20
Entity Registration - Yes - Actively maintained. 2015-Apr-04 2015-05-20
Ticket - Yes - Actively maintained. 2015-Mar-18 2015-05-20
Commerce Tickets - Dev - Actively maintained. 2013-Sep-30 2015-05-20
Commerce Event Ticket - Yes - Actively maintained. 2015-Jan-04 2015-05-20
Commerce Booking - Yes - Actively maintained. 2014-Feb-24 2015-05-20

General Comparisons

Can be divided into 2 camps:
1) Per entity/content type event settings
- Node Registration, Signup, Entity Registration, Commerce Event Ticket
- Node Registration, Signup are node based
- Entity Registration, Commerce Event Ticket are entity based
- all hardcoded to have only one registration type per entity or content type

2) Per node event settings
- Ticket, Commerce Booking, Commerce Tickets
- All entity based
- Ticket is used in COD distribution, usable for simple setup, not so polished to use for more complex setup yet
- Commerce Booking is new as of this writing, there are still missing/broken functionality

Commerce integration

Entity Registration - Registration Commerce or Commerce Registration
Commerce Event Ticket, Commerce Booking, Commerce Tickets - directly integrated
Ticket - refer to cod_paid_events of http://drupal.org/project/cod_support

Worth mentioning

Room - complete booking and room management solution for hotels, vacation rentals and B&Bs