I’m a member of a lot of groups that meet periodically and it can be a difficult challenge to determine what time is a good time for people to meet. I looked around at options that were available to solve this and found a free service that met all my needs.
agreeAdate allows a person to setup a list of available meeting times and share that list with as many people as they want. The first 20 people to respond (at the free level, more at higher licensing levels) are able to state which times would work best for them. For my purposes, the responses of the first 20 people are sufficient for me to determine if a time will be well attended or not. We’ve used this with great success to choose times for SQL Saturday organizer meetings and North Central regional chapter leader meetings. Check it out!