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


Nylas Scheduler is described as 'Easy appointment scheduling, allowing users to share a link with available time slots, so invitees can quickly book a meeting, streamlining the process without back-and-forth communication' and is a appointment scheduler in the office & productivity category. There are more than 10 alternatives to Nylas Scheduler for a variety of platforms, including Web-based, SaaS, Google Chrome, Android and iPhone apps. The best Nylas Scheduler alternative is Thunderbird Appointment, which is both free and Open Source. Other great apps like Nylas Scheduler are Cal.com, Supercal, Calendly and TrySchedule.
Thunderbird Appointment makes it easy to find a time to meet. So you can ditch the admin and streamline your day.


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.




Coordinate meetings by emailing an AI assistant that syncs with up to 6 calendars, supports group or one-on-one events, creates unlimited custom booking links, gathers meeting details through forms, manages timezones, and sends automated reminders.


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.




The easiest free online schedule builder. Drag-and-drop interface, instant PNG export. No signup needed. PDF & AI tools available for Pro users.

b00k.me is a minimalist scheduling tool built for people who value their time. Set your availability, charge for sessions (or not), and share a link. That’s it. Clean, fast, and in your control.
Meetify makes scheduling in-person meetings simple and personal. With built-in restaurant searching, it helps you find the perfect place to meet, whether it’s a coffee shop, a restaurant, or virtually if needed.




Open your office 24/7 and manage your appointments with a solution tailored for agents and agencies. Share booking link with potential buyers, track visits, and never miss an opportunity.



Cale is an API-first appointment scheduling system that integrates easily with your application, providing businesses with a reliable way to manage reservations. It supports multi-tenancy, allowing you to handle multiple clients or environments (such as testing and production)...


Cal24h is a Swiss-hosted online appointment scheduling software for independents, practices, and teams.



Designed for busy professionals who need fast, flexible scheduling. Aivee Booking uses AI and Smart Prompt Scheduling to instantly find the ideal time for your 1-on-1 meetings — all from a single, one-off link.
