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


Howie.ai is described as 'AI assistant coordinates schedules from email, manages meetings, updates availability in real time, and automates calendar management for professionals' and is a appointment scheduler in the office & productivity category. There are more than 25 alternatives to Howie.ai, not only websites but also apps for a variety of platforms, including SaaS, iPhone, Android and Windows apps. The best Howie.ai alternative is Thunderbird Appointment, which is both free and Open Source. Other great sites and apps similar to Howie.ai are Cal.com, Supercal, Calendly and TidyCal.
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.




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.




Topmate is a tool that connects creators and experts with their audience through one-on-one sessions, allowing users to share knowledge and monetize their time. Users create a personal link, list services, set availability, and establish charges, which followers can use to book...




Enhances productivity by optimizing calendar management, syncing data, and balancing activities with intelligent scheduling. Integrates seamlessly with Google Calendar, Slack, and Calendly to automate task management and improve work-life balance while protecting personal time.




A booking experience your clients will love. For small businesses, first impressions matter. YouCanBookMe is the most personalized meeting scheduler you can use to build your business. Bookers can overlay their availability to find the best time to meet. Powered by Capacity.




zcal is all-in-one scheduling solution built for speed. It’s beautiful, easy to use, and fully integrated with Google, Office 365, and Outlook calendars. Sign up for free today!



Undock is a scheduling platform that integrates with Gmail, Outlook 365, Superhuman, LinkedIn, and Twitter. It functions as a calendar assistant, allowing you to share times or your entire calendar. It also enables instant meeting scheduling without checking your calendar.



Automates schedules with AI, integrating calendars, tasks, and projects in one centralized dashboard. Automatically reschedules unfinished work, prioritizes tasks, limits meetings, and allocates time for focused sessions. Supports individuals and teams for productive planning.




