Thunderbird Appointment makes it easy to find a time to meet. So you can ditch the admin and streamline your day.


Clipse is described as 'Scheduling tool that delivers instant meeting times that work for everyone. For product/program/vendor relationship managers dissatisfied with polling groups of people for lists of available meeting times, Clipse then synchronizes your availability with that of your' and is an app in the office & productivity category. There are more than 10 alternatives to Clipse for a variety of platforms, including Web-based, SaaS, Android, iPhone and Mac apps. The best Clipse alternative is Thunderbird Appointment, which is both free and Open Source. Other great apps like Clipse are Notion Calendar, Cal.com, Calendly and TidyCal.
Thunderbird Appointment makes it easy to find a time to meet. So you can ditch the admin and streamline your day.


Experience a fully integrated calendar with Notion, syncing events from Google Calendar, offering built-in scheduling, time zone support, and the ability to connect multiple accounts. Manage all events, personal and work, with a modern design, light and dark modes, and Lock Screen support for iOS 17.




Open-source scheduling tool offering self-hosted or hosted deployment, complete white-label branding, API-driven customization, data ownership, online booking management, flexible embedding, privacy, and integration for business meetings, seminars, and more.




Calendly can connect with up to six of your calendars to automatically check availability and help you connect with your best contacts, prospects and clients.




Web-based scheduling platform offering unlimited meeting booking types, seamless calendar, video conferencing, and payment integrations, cross-timezone support, easy setup, embeddable booking pages, API automations, mobile-friendly interface, and notifications.




Microsoft Bookings, part of select Microsoft 365 Copilot plans, is a simpler way to organize schedules and manage appointments.









No back-and-forth emails, no double booking and only a few seconds to schedule an appointment with you. It's idea is simple: you create your calendar, set your availability and then share it with our clients or co-workers, who can easily schedule an appointment.




Online scheduling assistant to coordinate meetings 10x faster with contacts inside and outside your company. Works with all calendars (Google, Office 365, Exchange, iCloud, Yahoo, etc). Works on web, smartphone, desktop, using voice, chat, and email.




SimplyMeet.me is a super simple, clean looking and effective meeting scheduling solution. It can integrate with your Gmail, iCAL, Offfice365 or CalDav calendars, your favorite Video platform, Stripe to accept payments and more.



Zeeg is the scheduling CRM, where the most advanced booking features and customer management work as one system.



