I just gave this a quick run. There aren't many options; however, it's very easy and quick to use. It can definitely suffice many use cases.
WhenAvailable - WhenAvailable is an excellent event management tool that allows scheduling the dinner party, book club meeting, and guys’ night out with simple and best ideas.
Letsfind - Letsfind is a fast, easy-to-use, ad-free way to create online (meeting) polls.
Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.
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