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Cal.com VS Spring Security

Compare Cal.com VS Spring Security and see what are their differences

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Contents:
  1. ยป Base Details
  2. ยป Videos
  3. ยป Reviews
  4. ยป Alternatives

Cal.com logo Cal.com

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

Spring Security logo Spring Security

The Spring portfolio has many projects, including Spring Framework, Spring IO Platform, Spring Cloud, Spring Boot, Spring Data, Spring Security...
  • Cal.com Landing page
    Landing page //
    2023-10-08
  • Spring Security Landing page
    Landing page //
    2023-08-18

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.

Spring Security features and specs

  • Comprehensive Security Features
    Spring Security offers a wide range of security features including authentication, authorization, and protection against common attacks like CSRF and XSS.
  • Integration with Spring Ecosystem
    Seamless integration with the Spring Framework, allowing easy configuration and use within existing Spring applications.
  • Customizable
    Highly customizable, allowing developers to extend and tweak the default behavior to meet specific project needs.
  • Active Community and Support
    Backed by a large community and extensive documentation, offering numerous resources for troubleshooting and learning.
  • Declarative Security
    Supports declarative security via annotations and configuration, simplifying the process of securing applications.
  • Comprehensive Testing Support
    Provides utilities and support for comprehensive security testing, ensuring that your security configurations work as expected.
  • Strong Access Control
    Offers robust access control mechanisms, allowing fine-grained permission settings for different users and roles.
  • OAuth2 and OpenID Connect Support
    Built-in support for OAuth2 and OpenID Connect protocols, making it easier to implement modern security practices.

Possible disadvantages of Spring Security

  • Complexity
    The extensive feature set and configuration options can make Spring Security overly complex, especially for beginners.
  • Steep Learning Curve
    Due to its comprehensive nature, there is a steep learning curve, which can be time-consuming for new developers.
  • Configuration Overhead
    Significant time and effort may be required to properly configure all security aspects, particularly for large applications.
  • Performance Overhead
    The additional security layers can introduce some performance overhead, which could be significant in high-traffic applications.
  • Dependency on Spring Framework
    Tightly coupled with the Spring Framework, which limits its usage in non-Spring-based applications.
  • Frequent Updates
    Frequent updates and changes may require regular maintenance and adaptation in order to stay up-to-date.
  • Limited Support for Non-Web Applications
    Primarily designed for web applications, with fewer features and less support for non-web environments.
  • Verbose Configuration
    XML and Java-based configuration can be verbose and cumbersome, leading to potential misconfigurations.

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

+ Add

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

Spring Security videos

+ Add

Spring Security 17 Security Context Holder

More videos:

  • Review - Spring security password encoding and DelegatingPasswordEncoder

Category Popularity

0-100% (relative to Cal.com and Spring Security)

Cal.com

Spring Security

Appointments and Scheduling
100 100%
Appointments and Scheduling
0% 0
Application Utilities
0 0%
Application Utilities
100% 100
Calendar And Scheduling
100 100%
Calendar And Scheduling
0% 0
Utilities
0 0%
Utilities
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 Spring Security

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
Source: news.ycombinator.com

Spring Security Reviews

We have no reviews of Spring Security yet.
Be the first one to post

Social recommendations and mentions

Based on our record, Cal.com should be more popular than Spring Security. It has been mentiond 60 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.

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 / 5 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

Spring Security mentions (13)

  • Secure Your Spring API With JWT and MongoDB
    Weโ€™re going to build a small, secure API with Spring Security and store user data in MongoDB. Spring Security already knows how to handle JWTs via the OAuth2 Resource Server support, so weโ€™ll lean on that instead of writing custom filters. - Source: dev.to / 10 months ago
  • March 2025 Java Key Updates in Boot, Security, and More
    The third milestone release of Spring Security 6.5.0 introduces new features such as:. - Source: dev.to / over 1 year ago
  • Unveiling the Success Behind Spring Security: Open Source Business Models, Funding, and Community
    In conclusion, Spring Security is much more than a security framework for Javaโ€”it is a testament to what can be achieved when transparency, community engagement, and strategic funding intersect. The frameworkโ€™s evolution reflects the broader trends in open source development where corporate collaboration and community-driven innovation create robust and adaptable technologies. Whether you are an enterprise looking... - Source: dev.to / over 1 year ago
  • OAuth 2 Token Exchange with Spring Security and Keycloak
    In today's interconnected digital landscape, companies often collaborate to provide seamless services to their users. In this post, weโ€™ll explore a scenario involving two hypothetical companies: MyDoctor and MyHealth. Weโ€™ll demonstrate how MyHealth users can log in to MyDoctor using their MyHealth credentials, and how MyDoctor's backend can securely call MyHealth's APIs on behalf of the user. To achieve this,... - Source: dev.to / almost 2 years ago
  • API Security Fundamentals: Key Practices for Developers
    Overview: Spring Security is a robust and adaptable authentication and access control framework for Java applications, part of the broader Spring ecosystem. - Source: dev.to / about 2 years ago
View more

What are some alternatives?

When comparing Cal.com and Spring Security, 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.

OpenSSL - OpenSSL is a free and open source software cryptography library that implements both the Secure Sockets Layer (SSL) and the Transport Layer Security (TLS) protocols, which are primarily used to provide secure communications between web browsers and โ€ฆ

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

Let's Encrypt - Letโ€™sย Encrypt is a free, automated, and open certificate authority brought to you by the Internet Security Research Group (ISRG).

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

Ensighten - Ensighten provides enterprise tag management solutions that enable businesses manage their websites more effectively.

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