Cal.com vs Xoyondo

Cal.com has no write-up on Specifiction yet; its figures are above.

Xoyondo helps groups arrange meetings and events through polls where participants mark their availability. It also offers opinion polls, anonymous polls, and Sign Up sheets. People can create or participate in polls and Sign Up sheets without an account, and participation does not require personal information. Polls are private by default and accessible to people with the direct link; the FAQ says there is currently no practical limit on participants. Sign Up sheets come in four types, including single-date RSVP, and creators can limit participants per slot or slots per participant. Results can be exported to Excel or CSV. Creators may import Google or Yahoo address books to invite participants; Xoyondo says it neither accesses those account passwords nor stores the address books on its servers. Polls and message boards are deleted after two years without a vote, comment, or other modification. The service uses Mailgun for notifications, which temporarily retains transmitted email addresses for up to 30 days for delivery. The Standard plan lists unlimited polls and participants; Premium and Business add further scheduling and administration options.