Sites and apps similar to BUK include Thunderbird Appointment, which is free and open source. Other options are Calendly, Supercal, TidyCal and Topmate. There's no shortage of Appointment Schedulers like BUK, with more than 25 alternatives for Android, iPhone, iPad, Windows and Mac.
Coordinate meetings by setting your availability, sharing a booking link via email or website, planning one-off or recurring events, integrating your calendar to see appointments in one view, and simplifying scheduling by replacing manual back-and-forth.
United States
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.
United States
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.
United States
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.
United Kingdom
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...
India
eWAIT is a $9/month digital waitlist for barbers, salons, and clinics.
Customers join by phone, pick “Wait In-Shop” or “Text Me When Ready,” and get updates automatically.
Shops stop losing walk-ins, calm their lobbies, and unlock real-time wait analytics.
Modern, design-focused scheduling offers branded booking with image or video backgrounds, integrates with Google and Outlook, prevents double-bookings, auto-generates meet links, and features reminders, multiple durations, custom fields, and high-end visuals for creative professionals.
Netherlands
EU
Tymeslot is a source-available, privacy-first meeting-scheduling platform built with Elixir and Phoenix LiveView. Self-host it on your own infrastructure or let us run it for you — either way, your data stays yours.
EstoniaEU
Customizable online scheduling platform for service-based businesses, offering booking pages, real-time staff and service availability, automated notifications, online payments, group booking, Google Calendar sync, multi-location management, and plugin extensions.
CyprusEU
Online appointment scheduler offering customizable booking pages, 24/7 self-booking, instant confirmations, automated reminders, calendar sync, multi-staff management, mobile access, real-time updates, and video meeting integrations for global appointments.
United States
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.
United States
Reservio is a simple online booking and appointment scheduling application. It makes accepting appointments online and scheduling employee's time easy and accessible. Offered for small businesses in Healtcare, Services, Personal Care, Education and Sport.
CzechiaEU
