Software Alternatives, Accelerators & Startups

Cal.com VS Inside

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

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Cal.com logo Cal.com

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

Inside logo Inside

Visual, omni channel customer engagement platform
  • Cal.com Landing page
    Landing page //
    2023-10-08
  • Inside Landing page
    Landing page //
    2022-12-24

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.

Inside features and specs

  • User-Friendly Interface
    The platform has a user-friendly interface that makes it easy for both clients and staff to navigate and use the system efficiently.
  • Comprehensive Scheduling
    It offers robust scheduling capabilities that allow for easy management of appointments, reducing the chances of double-booking or missed appointments.
  • Client Management
    The system includes comprehensive client management features which help in maintaining detailed and organized client records.
  • Automated Notifications
    Automated email and SMS notifications help in reminding clients of their appointments, thus reducing no-shows.
  • Integrated Payments
    Support for integrated payment processing to streamline billing and payment collections.
  • Customizable Features
    The platform offers a variety of customization options to fit the specific needs of different businesses.

Possible disadvantages of Inside

  • Cost
    Some users may find the pricing plans to be expensive, especially for small businesses or startups with limited budgets.
  • Learning Curve
    While the interface is generally user-friendly, there can be a learning curve for new users unfamiliar with scheduling software.
  • Limited Offline Access
    The platform may have limited functionality without an internet connection, which can be problematic for businesses that experience connectivity issues.
  • Customer Support Response Time
    Some users have reported slower response times from customer support during peak times.
  • Feature Overload
    For small businesses with simple needs, the extensive feature set might be overwhelming and unnecessary.

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.

Analysis of Inside

Overall verdict

  • Inside (atfrontdesk.com) is generally considered a good tool for managing front desk operations and enhancing guest experiences.

Why this product is good

  • Efficient Front Desk Management: Inside provides a streamlined solution to handle front desk operations, reducing wait times and improving customer satisfaction.
  • User-Friendly Interface: The software is designed with an intuitive interface, making it easy for staff to learn and use efficiently.
  • Comprehensive Features: It offers a wide range of features such as appointment scheduling, visitor management, and integration with other systems.

Recommended for

  • Hotels and resorts looking to improve their front desk operations.
  • Businesses that require efficient visitor management solutions.
  • Organizations seeking to enhance guest interactions and experiences.

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

Inside videos

Inside Review

More videos:

Category Popularity

0-100% (relative to Cal.com and Inside)
Appointments and Scheduling
Productivity
78 78%
22% 22
Calendar And Scheduling
100 100%
0% 0
Tech
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 Inside

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

Inside Reviews

We have no reviews of Inside 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 Inside. While we know about 60 links to Cal.com, we've tracked only 1 mention of Inside. 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

Inside mentions (1)

  • Visitor log app?
    We use the Inside app for iPad, https://atfrontdesk.com. Source: over 2 years ago

What are some alternatives?

When comparing Cal.com and Inside, 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.

Limbo - โ€œDark, disturbing, yet eerily beautiful, Limbo is a world that deserves to be explored.โ€ Joystiq. โ€œLimbo is as close to perfect at what it does as a game can get.โ€ Destructoid. Buy LIMBO: Special Edition.

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

Morning Brew - The hottest news from Wall St. to Silicon Valley, daily โœ‰๏ธ

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

Eulerr - Choose software team. Get first delivery in 2 weeks