The best alternatives to Guestboard are Partiful, Eventbot, and Allcal. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Guestboard?
Agree.com— Free e-signature for everyone with invoicing and payments!
Eventbot lets you create events directly in Slack, no external apps needed! Get more RSVPs by putting your event in Slack - and use Eventbot to keep your event from getting lost in the scroll back. Eventbot helps you avoid "meeting invite hell" and works with the major calendar apps. Use our popular Free Plan or upgrade for advanced features.
The Amsterdam based app designed for meeting people face to face in a matter of minutes. You only have 15 minutes of chat time once you connect with someone nearby before you meet IRL.
Sciety is a platform that allows anyone to organise events for free! Create private groups, host multiple events, and find people that want to connect. Don't see a sciety that you want? Why don't you create it!