Software Alternatives, Accelerators & Startups

Cal.com VS PlainAdmin

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

Cal.com logo Cal.com

Cal.com (formerly Calendso) is the open source Calendly alternative.

PlainAdmin logo PlainAdmin

PlainAdmin is an Open-source freemium Bootstrap 5 based vanilla JS multipurpose admin template comes with - all essential dashboard components, pages, UI elements, charts, graphs, libraries and everything you may need for a data-rich backends.
  • Cal.com Landing page
    Landing page //
    2023-10-08
  • PlainAdmin Landing page
    Landing page //
    2023-09-03

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.

PlainAdmin features and specs

  • User-Friendly Interface
    PlainAdmin offers a clean and intuitive interface that simplifies navigation and administration for users, making it accessible even for those with minimal technical expertise.
  • Customizable Themes
    The platform provides numerous themes that can be easily customized to suit individual preferences or brand guidelines, ensuring a consistent look and feel across the application.
  • Responsive Design
    PlainAdmin is designed to be fully responsive, ensuring a seamless user experience on both desktop and mobile devices, which is crucial for modern web applications.
  • Comprehensive Documentation
    Extensive and well-organized documentation aids developers and administrators in understanding and utilizing the platform's features effectively, reducing the learning curve.
  • Integration Capabilities
    The platform supports easy integration with various third-party services and APIs, allowing for enhanced functionality and versatility in different applications.

Possible disadvantages of PlainAdmin

  • Limited Advanced Features
    Compared to some other admin panel solutions, PlainAdmin might lack certain advanced features and customization options needed for more complex applications.
  • Potential Performance Issues
    As with any web application, the performance of PlainAdmin could be compromised if not properly optimized, especially when dealing with large datasets.
  • Dependency on External Libraries
    The reliance on external libraries and plugins could lead to potential security vulnerabilities if those libraries are not properly managed and updated.
  • Learning Curve for Customization
    While there is comprehensive documentation, users may still face a learning curve when attempting to implement deeper customizations or integrate complex functionalities.
  • Limited Community Support
    Being relatively new or niche, PlainAdmin may not have a large community for support and community-driven development compared to more established admin panel solutions.

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.

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

PlainAdmin videos

No PlainAdmin videos yet. You could help us improve this page by suggesting one.

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Category Popularity

0-100% (relative to Cal.com and PlainAdmin)
Appointments and Scheduling
Developer Tools
0 0%
100% 100
Calendar And Scheduling
100 100%
0% 0
Design Tools
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 Cal.com and PlainAdmin

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

PlainAdmin Reviews

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Social recommendations and mentions

Based on our record, Cal.com seems to be a lot more popular than PlainAdmin. While we know about 60 links to Cal.com, we've tracked only 1 mention of PlainAdmin. 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.

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

PlainAdmin mentions (1)

  • Launched ๐Ÿš€ Open-source Bootstrap Admin Template on ProductHunt and Its Trending on Top โšก
    Today, I launched an open source Bootstrap admin template on Product Hunt and its trending on top #7 ๐Ÿ”ฅ You can check out demo or download from our site or GitHub if you never heard of about this admin template. Source: over 4 years ago

What are some alternatives?

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

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.

Soft UI Dashboard - Admin dashboard template for Bootstrap 5

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

Flatlogic - Software House for startups and companies

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

ArchitectUI - Modern dashboard template for bootstrap 4