Software Alternatives, Accelerators & Startups

Mantine VS Cal.com

Compare Mantine VS Cal.com and see what are their differences

Mantine logo Mantine

React library, 60+ hooks and components with dark theme support and focus on accessibility

Cal.com logo Cal.com

Cal.com (formerly Calendso) is the open source Calendly alternative.
  • Mantine Landing page
    Landing page //
    2023-07-27
  • Cal.com Landing page
    Landing page //
    2023-10-08

Mantine features and specs

  • Component Library
    Mantine offers a comprehensive set of React components that are ready to use, which speeds up development and ensures consistency in design.
  • Customizability
    Mantine components are highly customizable, allowing developers to fine-tune their UI according to their needs and preferences.
  • Themable
    The theming system in Mantine is robust, enabling developers to easily implement both light and dark modes and to create custom themes.
  • TypeScript Support
    Mantine has built-in TypeScript support, providing type safety and autocompletion benefits for developers who use TypeScript.
  • Performance
    Mantine is designed with performance in mind, ensuring that components render quickly and efficiently, which is crucial for creating responsive UIs.
  • Rich Documentation
    Mantine comes with extensive documentation, which includes usage examples, API details, and guidelines, making it easier for developers to get started and solve issues.

Possible disadvantages of Mantine

  • Learning Curve
    Despite its rich documentation, there is a learning curve associated with Mantine, especially for developers who are new to the library or to component-based design in general.
  • Bundle Size
    Mantine's comprehensive features can lead to a larger bundle size compared to some lighter-weight UI libraries, which may affect performance in resource-constrained environments.
  • Community Support
    As a relatively newer library compared to giants like Material-UI or Ant Design, Mantine has a smaller community, which might limit the availability of third-party tutorials and plugins.
  • Dependency
    Relying on a third-party UI library like Mantine can lead to dependencies on its updates and bug fixes, which may not align with the projectโ€™s timelines.

Cal.com features and specs

  • Customizable
    Cal.com allows extensive customization to fit various branding and scheduling needs, which makes it adaptable for different types of users including businesses and individuals.
  • Open-source
    Being an open-source platform, Cal.com provides the flexibility for developers to modify and extend the software as per their specific needs, fostering a collaborative development environment.
  • Integrations
    Cal.com offers a wide range of integrations with other software tools like Google Calendar, Microsoft Outlook, and Zoom, enhancing its functionality and making it easier to fit into existing workflows.
  • User-friendly Interface
    Cal.com has an intuitive and clean interface that makes it easy for users of all technical skill levels to set up and manage their scheduling.
  • Privacy-focused
    Cal.com emphasizes data privacy, ensuring user information is handled securely, which is crucial for users who need to comply with regulations like GDPR.

Possible disadvantages of Cal.com

  • Learning Curve
    Although it is highly customizable, the plethora of options and features may result in a steeper learning curve for new users who are not familiar with such scheduling tools.
  • Limited Free Version
    The free version of Cal.com comes with limitations that may not be sufficient for growing businesses or advanced users who require more comprehensive features.
  • Dependency on Integrations
    Cal.com's effectiveness heavily depends on its integrations. Without these integrations, some users might find the tool less useful or incomplete, especially if their primary tools are not supported.
  • Support
    While open-source has many benefits, it may also mean that immediate, personalized support could be limited compared to fully commercial solutions. This might pose a challenge for users needing quick resolutions.
  • Performance
    As an open-source platform, the performance might vary depending on how it is hosted and managed. Suboptimal configurations could lead to slower performance or downtimes.

Analysis of Cal.com

Overall verdict

  • Cal.com is generally considered a good option for scheduling and calendar management.

Why this product is good

  • Cal.com is praised for its open-source nature, allowing for greater customization and integration flexibility. It offers a user-friendly interface and supports various calendar integrations, making it a versatile tool for individuals and businesses alike.

Recommended for

  • Freelancers who need a simple yet effective scheduling tool.
  • Small businesses looking for a customizable scheduling solution.
  • Developers who appreciate open-source software and need a tool they can modify.
  • Businesses seeking a platform that can integrate with existing tools and workflows.

Mantine videos

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Cal.com videos

What can you do with Cal? | Cal.com Version 1.1 Launch | 10 new languages

More videos:

  • Review - Cal.com Version 1.0 Launch Event

Category Popularity

0-100% (relative to Mantine and Cal.com)
Design Tools
100 100%
0% 0
Appointments and Scheduling
Open Source
100 100%
0% 0
Calendar And Scheduling
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Mantine and Cal.com

Mantine Reviews

The Best Component Libraries for React, Next.js & Tailwind UI
Mantine is a full-featured React component library offering over 100 customizable components and hooks. It emphasizes performance and accessibility, making it suitable for a wide range of applications.
Source: gist.github.com
10 Best Free React UI Libraries in 2023
Mantine is a free and open-source React components library that provides 134 fully responsive React components for 25 different categories like navbar, error pages, blog card, comments, sliders, etc. to be put into production.
React UI Components Libraries: Our Top Picks for 2023
Mantine has a Discord community that you can join to ask questions, view the recent developments, and participate in feature discussions. Itโ€™s also available on GitHub for discussions and sharing feedback. You can also follow Mantine on Twitter to stay notified of updates.
Source: kinsta.com

Cal.com Reviews

Acuity Scheduling alternatives for businesses outgrowing it
The honest read: if you're leaving Acuity because your business outgrew simple scheduling โ€” you need deposits, add-ons, multiple staff and locations, and ideally a booking site you own โ€” Opencals is built for exactly that transition, and pay-as-you-go means it costs nothing until you're earning. If you're leaving for a narrower reason, match it precisely: SimplyBook.me for...
Source: opencals.com
I've poked around a while ago at some Calendly alternatives (specifically was lo... | Hacker News
I tried using https://cal.com for a bit but ended up just switching over to https://zcal.co and it has been great so far. All these other scheduling tools end up trying to do too much and always seem to end up a bit clunky and charge absurd amounts for it

Social recommendations and mentions

Based on our record, Mantine should be more popular than Cal.com. It has been mentiond 139 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Mantine mentions (139)

  • Generate PDF invoices in React with a live preview
    Back in invoice-app/. Install Oicana alongside Mantine for the UI:. - Source: dev.to / about 1 month ago
  • How I turned a Python function into a web app in one decorator
    The Next.js frontend has one dynamic route: /tools/[slug]. It fetches the manifest for that slug from the FastAPI backend, then renders the form using a custom renderer registry. Each x-nix.widget type maps to a Mantine component โ€” textarea becomes a Textarea, dropdown becomes a Select, switch becomes a Switch, file becomes a file upload zone. - Source: dev.to / about 2 months ago
  • How to Build and Scale Design Systems: Starting with the Right Framework
    For any web application that involves rich client-side interactions, the perks of using React and having access to the ecosystem of tooling built around it (e.g. Redux Toolkit, React Native, TanStack, Next.js, as well as component libraries like Mantine) are undeniable. Its declarative API for turning state into UI is also easy enough to pick up for most (even if it requires experience to master). - Source: dev.to / 3 months ago
  • Scotty v2.0.2 โ€” Now Your Dashboard Tells You What to Clean
    Scotty is built on the WPBones framework โ€” a Laravel-style architecture for WordPress plugin development. The React dashboard is powered by Mantine UI, giving you a modern, fast, and accessible interface. - Source: dev.to / 3 months ago
  • Mantine SelectStepper: A Modern Alternative to Traditional Dropdowns
    In the world of modern web development, choosing the right UI component can make or break the user experience. Today, we're excited to introduce you to Mantine SelectStepper, a React component that revolutionizes how users interact with predefined option lists. Built on top of the powerful Mantine UI library, this component offers an elegant, intuitive alternative to traditional dropdown selects. - Source: dev.to / 6 months ago
View more

Cal.com mentions (60)

  • "You Wouldnโ€™t Steal a DIV": How I Built My Portfolio
    Then for the component library, I was really into coss ui. I stumbled upon it randomly one day and loved it so much. My Nathan's AI project already had a UI heavily inspired by cal.com: send button, message suggestions... So when I saw they had a shadcn/ui library with that kind of style, it was perfect for what I needed. - Source: dev.to / 4 months ago
  • AI Almost Sold Me a Subscription I Didn't Need
    I keep coming back to what would have happened if I didn't have a strong technical understanding of how calendar technology works โ€” the difference between local and cloud calendars, what an ICS feed is, why enterprise auth blocks third-party integrations. If this was many years ago before I gained all this experience, I would have stopped at the first confident answer from my search tool, installed one of those... - Source: dev.to / 5 months ago
  • Introducing Quackback: Open-Source Feedback Platform with a Built-in MCP Server
    Plausible brought open source to web analytics. Cal.com did it for scheduling. Formbricks did it for surveys. PostHog did it for product analytics. Quackback does it for feedback collection. - Source: dev.to / 5 months ago
  • ๐Ÿค Learn Front-End by Doing: Contribute to Cal.com's Open Source...๐Ÿš€
    In this tutorial, we'll be focusing on Cal.com:. - Source: dev.to / 12 months ago
  • 5 Side Project Ideas for Developers to Monetize as Micro-SaaS in 2025
    Take Cal.com (https://cal.com/), formerly known as Calendso. It started as an open source alternative to Calendly which offers a free, self-hostable version for users. - Source: dev.to / over 1 year ago
View more

What are some alternatives?

When comparing Mantine and Cal.com, you can also consider the following products

Chakra UI - Simple, modular and accessible UI components for your React applications.

Calendly - Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.

Ant Design - An enterprise-class UI design language and React implementation with a set of high-quality React components, one of best React UI library for enterprises

TidyCal - Optimize your schedule with custom booking pages and calendar integrations

Tailwind CSS - A utility-first CSS framework for rapidly building custom user interfaces.

Acuity Scheduling - Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.