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


Ink-In-Time is described as 'Appointment scheduling/booking application that aims to be super-simple, and open source!' and is an app in the office & productivity category. There are more than 25 alternatives to Ink-In-Time for a variety of platforms, including Web-based, SaaS, Android, iPhone and Google Chrome apps. The best Ink-In-Time alternative is Thunderbird Appointment, which is both free and Open Source. Other great apps like Ink-In-Time are Cal.com, Calendly, TidyCal and Topmate.
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.




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...




Easy!Appointments is a highly customizable web application that allows your customers to book appointments with you via the web. Moreover, it provides the ability to sync your data with Google Calendar so you can use them with other services.




Automated AI assistant interprets email requests to handle scheduling tasks, coordinates and optimizes meetings, updates calendar availability in real time, and minimizes manual effort for professionals needing efficient, dynamic calendar management.


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.



Online platform providing 24/7 self-service booking for virtual classes, staff and resource scheduling, automated reminders, online payments, marketing automation, social media integration, deals, reviews, analytics, and calendar sync for engagement.



MyMeet.io simplifies scheduling, payments, and meeting handling for both professionals and clients, streamlining the entire process.




CalGet is a user-friendly, free tool designed to generate "Add to Calendar" links, facilitating seamless event integration across various platforms. It supports popular calendar services such as Google, Apple, Outlook, Yahoo, and Office365, ensuring broad compatibility.



