Software Alternatives, Accelerators & Startups

Commandline Challenge VS Cal.com

Compare Commandline Challenge VS Cal.com and see what are their differences

Commandline Challenge logo Commandline Challenge

Test your command line skills

Cal.com logo Cal.com

Cal.com (formerly Calendso) is the open source Calendly alternative.
  • Commandline Challenge Landing page
    Landing page //
    2023-10-05
  • Cal.com Landing page
    Landing page //
    2023-10-08

Commandline Challenge features and specs

  • Skill Enhancement
    The Commandline Challenge helps users improve their command-line skills by offering a practical and engaging way to practice and learn new commands.
  • Immediate Feedback
    Users receive instant feedback after submitting their solutions, which helps them quickly identify mistakes and learn from them.
  • Variety of Challenges
    The platform offers a wide range of challenges that cater to different skill levels, from beginners to advanced users.
  • Browser-Based
    Since the challenges are browser-based, there is no need for users to install any additional software to participate.
  • Community Engagement
    Users can see solutions from other community members, which can provide new insights and alternative problem-solving approaches.

Possible disadvantages of Commandline Challenge

  • Limited Scope
    The challenges are limited to specific command-line tasks and may not cover a comprehensive range of topics or tools found in real-world scenarios.
  • No Real-World Environment
    Since the exercises are conducted in a controlled environment, users may not experience real-world complexities and challenges faced when using command-line tools.
  • Lack of Detailed Explanations
    The platform may not provide detailed explanations or learning materials for commands, requiring users to look elsewhere for thorough understanding.
  • Potential for Frustration
    Beginners might find some challenges too difficult, which could lead to frustration without adequate guidance or support.
  • Internet Dependency
    An active internet connection is required to access the challenges, which may not be convenient for users with limited connectivity.

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.

Commandline Challenge 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 Commandline Challenge and Cal.com)
Productivity
12 12%
88% 88
SSH
100 100%
0% 0
Appointments and Scheduling
Design Tools
100 100%
0% 0

User comments

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Reviews

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

Commandline Challenge Reviews

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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

Social recommendations and mentions

Based on our record, Cal.com should be more popular than Commandline Challenge. It has been mentiond 56 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.

Commandline Challenge mentions (9)

  • Day 21 - What next?
    To get crazy fast in the command line, try Command Line Challenge, practicelinux.com, learnshell.org and commandlinefu.com. Source: over 1 year ago
  • The Unix Game
    I put something together very similar to this, https://cmdchallenge.com that I like a bit better because it has console input. There is also a Christmas edition "12 days of shell" https://12days.cmdchallenge.com that is more like a learning progression. - Source: Hacker News / over 1 year ago
  • Openmoji
    Nice to see this posted on HN! A while back ago I used them for the design of a site a built https://cmdchallenge.com/ which gives it a nice feel of achievement badges without using standard unicode characters that may look different depending on the client. - Source: Hacker News / over 1 year ago
  • How To Start In CyberSecurity
    Cmd challenge is a website that gives you a linux terminal, and asks you to perform different tasks on it, so you sharpen your linux terminal skills. - Source: dev.to / over 2 years ago
  • Any good resources to learn about Linux and its commands in an interactive way?
    Aye that's a good one. CmdChallenge is also quite nice. Source: almost 3 years ago
View more

Cal.com mentions (56)

  • 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 / 3 months ago
  • Using Clerk SSO to access Google Calendar and other service data
    BookMate is an open-source, publicly accessible, lightweight clone of popular booking services like cal.com or Calendly. - Source: dev.to / 6 months ago
  • My Journey into Open Source: First Contributions and Lessons Learned
    Then, I came across Cal.com, a fantastic open-source project for scheduling meetings and managing tasks (super useful for productivity!). I knew the basics of Git but wasn’t quite there with forking, merging branches, and all the intricate Git processes. After some YouTube tutorials, I started to get the hang of things. 😅. - Source: dev.to / 8 months ago
  • Start your own (side) business with open-source in mind
    Cal.com is an open-source event-juggling scheduler for everyone, and is free for individuals. - Source: dev.to / over 1 year ago
  • Fellow HSP entrepreneurs, how do you manage your energy and stress?
    I force clients who want to talk to me to book a call. I use cal.com (free) and my Google Calendar (which its linked to) only allows calls on specific days/times. I have a few "Call Blocks" where they can book. That let's me do calls in a small section of my week, with ample downtime to recover the rest of the week. I'm still learning how many calls a day I can handle. Currently anything more than 2 is too much. Source: over 1 year ago
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What are some alternatives?

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

nodo - Manage your daily tasks in the command line

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.

Prompt - Prompt provides fully-integrated writing education solutions, combining instruction, curriculum, and feedback. We support educational institutions, companies, and individuals.

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

Cwiki - A Command line interface for searching Wikipedia!

SavvyCal - A scheduling tool both the sender and the recipient will love.