Software Alternatives, Accelerators & Startups

Cal.com VS StackStorm

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

Cal.com logo Cal.com

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

StackStorm logo StackStorm

StackStorm is a powerful open-source automation platform that wires together all of your apps...
  • Cal.com Landing page
    Landing page //
    2023-10-08
  • StackStorm Landing page
    Landing page //
    2023-07-27

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.

StackStorm features and specs

  • Open Source
    StackStorm is an open-source automation platform, which means it is cost-effective as there are no licensing fees. Users can contribute to its development and customization.
  • Event-Driven Automation
    It supports event-driven automation, allowing users to automate complex workflows that can be triggered by events from numerous sources.
  • Flexible and Extensible
    StackStorm provides a high level of flexibility and extensibility through integrations and customizable actions, allowing it to fit various automation needs.
  • Active Community
    There is an active community supporting StackStorm, which can be beneficial for troubleshooting, sharing best practices, and seeking advice from other users.
  • Self-Service Automation
    With its GUI and command-line tools, StackStorm enables self-service automation, empowering users to initiate and manage automation tasks without deep technical expertise.

Possible disadvantages of StackStorm

  • Complex Setup
    The initial setup and configuration of StackStorm can be complex and time-consuming, requiring a good understanding of the system and its dependencies.
  • Steeper Learning Curve
    Users may experience a steep learning curve due to the wide range of features and the requirement for understanding underlying technologies like Python and YAML.
  • Dependency Management
    Managing dependencies and ensuring compatibility between different integrations and components can be challenging and require continual maintenance.
  • Resource Intensive
    Running StackStorm can be resource-intensive, which might require additional infrastructure or cloud resources, especially for large-scale deployments.
  • Limited Support
    While there is a community for support, professional support options may be limited compared to proprietary solutions, which might be a concern for enterprises needing guaranteed, reliable support.

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

StackStorm videos

StackStorm 101 (v0.12)

More videos:

  • Review - Recovery from OpenStack Failures using Nagios and StackStorm

Category Popularity

0-100% (relative to Cal.com and StackStorm)
Appointments and Scheduling
Automation
0 0%
100% 100
Calendar And Scheduling
100 100%
0% 0
Workflow Automation
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 StackStorm

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

StackStorm Reviews

We have no reviews of StackStorm yet.
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Social recommendations and mentions

Based on our record, Cal.com seems to be more popular. 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 / 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

StackStorm mentions (0)

We have not tracked any mentions of StackStorm yet. Tracking of StackStorm recommendations started around Mar 2021.

What are some alternatives?

When comparing Cal.com and StackStorm, 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.

Apache Airflow - Airflow is a platform to programmaticaly author, schedule and monitor data pipelines.

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

RunDeck - RunDeck is an open source automation service with a web console, command line tools and a WebAPI.

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

Alloy Automation - Launch SaaS integrations faster