Software Alternatives, Accelerators & Startups

Cal.com VS Smart HTTPS

Compare Cal.com VS Smart HTTPS and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Cal.com logo Cal.com

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

Smart HTTPS logo Smart HTTPS

Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts...
  • Cal.com Landing page
    Landing page //
    2023-10-08
  • Smart HTTPS Landing page
    Landing page //
    2023-06-27

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.

Smart HTTPS features and specs

  • Automatic Redirection to HTTPS
    Smart HTTPS automatically changes HTTP protocol to HTTPS, which enhances the security of your browsing by ensuring that the connection is encrypted.
  • Fallback to HTTP
    In cases where an HTTPS version of the site is not available, it can automatically revert back to HTTP, ensuring you can still access the website instead of facing a disruption.
  • Whitelist Feature
    Allows users to maintain a whitelist of websites that should always be accessed using HTTP, providing flexibility and control over the browsing experience.
  • Improved Privacy
    By automatically using HTTPS, it helps in protecting user data from eavesdroppers and enhances privacy while browsing the web.

Possible disadvantages of Smart HTTPS

  • Compatibility Issues
    Some websites may not function correctly over HTTPS, leading to potential misbehavior or broken features when accessed using Smart HTTPS.
  • Potential for Increased Loading Times
    Sometimes, redirecting to HTTPS can result in slightly longer loading times, especially if the server's configuration is not optimal for HTTPS.
  • Resource Intensive
    The addon might consume additional resources to check for HTTPS versions of every site, which could impact browser performance, especially on older systems.
  • Limited Control Over Redirection
    Users might have limited ability to control which sites are redirected to HTTPS if they haven't preemptively whitelisted specific HTTP sites.

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

Smart HTTPS videos

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

Add video

Category Popularity

0-100% (relative to Cal.com and Smart HTTPS)
Appointments and Scheduling
Chrome Extensions
0 0%
100% 100
Calendar And Scheduling
100 100%
0% 0
Tool
0 0%
100% 100

User comments

Share your experience with using Cal.com and Smart HTTPS. For example, how are they different and which one is better?
Log in or Post with

Reviews

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

Cal.com Reviews

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

Smart HTTPS Reviews

We have no reviews of Smart HTTPS yet.
Be the first one to post

Social recommendations and mentions

Based on our record, Cal.com seems to be a lot more popular than Smart HTTPS. While we know about 60 links to Cal.com, we've tracked only 2 mentions of Smart HTTPS. 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 / 4 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 / 11 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

Smart HTTPS mentions (2)

  • โ€œWe donโ€™t track you โ€ฆ except for when we get paid for it.โ€
    Smart HTTPS, site This tries to send you to https sites instead of http sites. Using http sites makes you venerable to man in the middle attacks. (dont use http on public wifis if possible). Source: about 4 years ago
  • question about non secure websites
    I'd recommend using Smart HTTPS which automatically makes your site's HTTPS if it can offer it so it will reduce these situations. Here's the site where you can choose whichever browser you use. https://mybrowseraddon.com/smart-https.html. Source: over 4 years ago

What are some alternatives?

When comparing Cal.com and Smart HTTPS, 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.

HTTPS Everywhere - Chrome extension that encrypts and secures your browser

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

HTTPZ - HTTPZ is meant to be unobtrusive and lightweight.

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

SSL Enforcer - SSL Enforcer - Force SSL/TLS encryption for any browser or app. Block all unsecure connections.