Cal.com is an open-source scheduling tool designed for businesses and developers looking for a flexible, self-hosted or cloud-based booking system.
Open-source and self-hostable for complete control.
Highly customisable with API integrations and branding options.
Privacy-focused with GDPR compliance and secure hosting.
Cal.com stands out as a developer-friendly, privacy-first alternative to mainstream scheduling tools. It offers full flexibility for companies that want a self-hosted solution.
Unlike closed-source tools like Calendly, Cal.com allows businesses to fully control their data, customise branding, and integrate deeply with internal systems.
Cal.com is designed with API-first architecture, making it ideal for companies wanting to embed scheduling into existing workflows.
While powerful, Cal.com requires some development expertise to fully customise and deploy, making it less suitable for non-technical teams.
Best for:
Lemcal is a scheduling tool built for sales outreach, offering personalised booking pages and seamless lead qualification.
Calendly is a simple, widely-used scheduling tool that helps individuals and teams automate meeting bookings with ease.
HubSpot Sales Hub is a CRM and sales automation platform with pipeline management, automated follow-ups, and AI-driven insights for B2B sales teams.
Google Calendar is a free, cloud-based scheduling tool that integrates with Google Workspace for managing meetings and events.
Most teams grind for growth, but the best ones systemise it. In this step, you’ll see why a structured approach always beats random tactics. You’ll follow Random Rick, Specialist Steve, and Solid Sarah to understand how a system-driven growth approach can double revenue without doubling workload.
I’ve helped B2B service companies scale — not with random tactics, but with clear systems that align marketing and sales into one predictable growth engine. Built on 15 years of hands-on experience — helping teams move from random tactics to repeatable, scalable results.
15 years experience
1,500 marketers trained since 2015
Exited 6 companies
Sales CRM tools help B2B service businesses manage relationships, track deals, and streamline sales pipelines to improve conversion rates and revenue growth.
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See tool categoryMy name is Ewoud Uphof, a marketing strategist with 15 years of experience. I've been fascinated by growth since 2010, and I created this guide out of a passion for sharing what I've learned. These guides are a way for me to give back to the marketing community and are also linked to my video course, which covers these topics in even greater depth.
Cal.com is an open-source scheduling tool designed for businesses and developers looking for a flexible, self-hosted or cloud-based booking system.