Omnipointment is described as 'offers cooperative scheduling to find the best time for a group to meet' and is a Calendar in the Office & Productivity category. There are more than 50 alternatives to Omnipointment, not only websites but also apps for a variety of platforms, including iPhone, Android, iPad and SaaS. The best alternative is Framadate, which is both free and Open Source. Other great sites and apps similar to Omnipointment are Doodle (Freemium), Xoyondo (Free), Dudle (Free, Open Source) and FullCalendar (Free, Open Source).
Croodle is a web application to schedule a date or to do a poll on a general topics. All data like title and description, number and labels of options and available answers and names of users are encrypted/decrypted in the browser using 256 bits AES.