SignUpGenius VS CiviCRM

I've used signup.com and signupgenius.com in the past and both worked well and have free options. But in looking around, volunteersignup.org would be my pick now and seems to be exactly what you're looking for. Source: almost 3 years ago

If COTA is too far, there's Family Medical Systems up north in cedar park, and they need volunteers too. They feed you and give you a shot at the end of your shift. https://signupgenius.com/#!/showSignUp/10c0f4fa5a723a0f49-volunteer. Source: about 3 years ago

I am on mobile and can only access the mobile site (even removing “m.” in the address bar redirects me straight back to it) so here’s the address with m. And without but no promise that either work from mobile/desktop - may be easier/more accurate to scan QR code or type in URL shortener by hand! Source: about 3 years ago

Apart from Admidio which has already been mentioned, another option to explore is CiviCRM. Source: about 1 year ago

As a software developer, I looked at some of what they did, and some of what is commercially available for candidates. The guy who won in the races I ran in was spending $1500/month for a website that was a simple brochure. Something that could be set up for even folks running for school board might be a simple hosted brochure/blog site with Wordpress as a front-end, with CivCRM keeping track of volunteers and... Source: about 1 year ago

Https://civicrm.org/ [this works with a cms like drupal, wordpress, joomla etc]. Source: almost 2 years ago

So far I found Chatwoot, CiviCRM, Corteza, ERPNext, EspoCRM, Dolibarr, Odoo, OroCRM, Mautic, SuiteCRM and X2CRM and there are probably even much more available. It seems that Odoo and ERPNext are huge but also very flexible (with many extensions available). Source: about 2 years ago

If you are already using wordpress, you may also want to look at CiviCRM [https://civicrm.org/] for managing members etc. It is used by non-profit orgs. Source: about 2 years ago