Apps similar to Kallnext include Thunderbird Appointment, which is free and open source. Other options are Cal.com, Notion Calendar, Lunacal and Calendly. Appointment Schedulers like Kallnext are a crowded field, with more than 50 alternatives for the web, Android, iPhone, self-hosting and Windows.
Scheduled247 is an online scheduling platform that allows businesses, entrepreneurs, and professionals to meet their clients in a very intuitive way without the back-n-forth emails or phone calls. Whether it is a one-on-one meeting or you're hosting a large event or webinar...
Malta
EU
Meet Karen #1 free appointment scheduling platform used by multiple businesses. Karen is the only intelligent personal assistant that works 24/7, behind the scenes to fill your calendar and take work off your plate.
Sprintful is the most flexible, comprehensive scheduling solution. Create an on-brand web page for instant, hassle-free booking under your own domain name. Sprintful supports one-on-one meetings and group sessions.
Cal24h is a Swiss-hosted online appointment scheduling software for independents, practices, and teams.
Switzerland
Simplisik Booking is an appointment scheduling platform designed for small businesses, consultants, therapists, sales teams, and service professionals who want to eliminate scheduling back-and-forth without the complexity of enterprise solutions.
United States
CalendHub syncs your calendars across Google Calendar and Outlook in real-time. See all your events in one unified view, avoid double-booking, and share scheduling links so others can book time with you. Privacy-first with full control over what gets synced.
Use your time efficiently by speaking to people when it is convenient for both of you, without scheduling a meeting. TAG allows you to make and receive calls only when you actually have the time to do so.
SwedenEU
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.
United States
iMeetify is the perfect scheduling tool for anyone who wants to streamline their scheduling process and stay organized. Whether you’re an individual trying to manage your schedule or a business trying to coordinate with a team or clients, iMeetify has everything you need to get...
Kalendar is a free, open-source scheduling tool that offers premium features like custom branding, unlimited event types, and two-way calendar sync without a subscription. You can vibecode any feature you want using the founding.dev platform.
United States
Simple Appointments is a highly customizable web application that allows your customers to book appointments with you via the web. It radically simplifies the process of scheduling events, meetings, appointments, etc. — It's free.
