Guestboard is one of the rare software packages where you feel the love and dedication that went into it.
The whole concept of interactions is well thought out.
You have Chat, Boards, Checklists where people can interact and post messages.
With Jitsi as a built in solution for smaller events it's perfect, and of course you can choose other options for lager audiences as well.
I'm really happy that Peter brought guestboard to appsumo.
He was also very helpful when I had some questions during my event and the roadmaps is very promising.
I hope that Guestboard gets more traction here on appsumo - Guestboard deserves it.

Pros:
- nice and well thought out UI/UX
- generous credit/user limits (especially the 30 user per event free) - holding lots of smaller events is easy
- build in free Jitsi Webconference solution / and the option to use other options for lager audiences
- easy onboarding (even non english speakers could manage it) and with more languages this becomes even esier.
- interaction concept well suited for open events (no end/scheduled meetings in an event) and the tools like (chat/bords/photowall/checklists) are very helpful for organizing events
- good customization options (even though not fully white label) are good

cons:
- not fully whitelabeled / cname (they are working on this)

Grab at least one code and you will have one of the best tools for event handling in your pockets