Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.
Framadate - Make your polls
MeetNotes - Increase Productivity with Meeting Notes Tool. More effective minutes, Prepare Agenda, Collaborative Notes & Action Items.
OpenSondage - Make your polls with OpenSondage.
Chili Piper - Chili Piper is an intelligent calendar for Sales teams, to book their own meetings or set appointments for other teams.
Dudle - Dudle is an online scheduling application, which is free and open source.