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Cal.com VS OSS Database

Compare Cal.com VS OSS Database and see what are their differences

meetergo
GDPR-compliant meeting scheduling hosted in Germany. Booking pages, built-in video calls, lead routing, CRM and payments in one tool, with all data stored in Frankfurt and a data processing agreement (DPA/AVV) included. sponsored
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Cal.com logo Cal.com

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

OSS Database logo OSS Database

A crowdsourced database of Open Source alternatives
  • Cal.com Landing page
    Landing page //
    2023-10-08
  • OSS Database Landing page
    Landing page //
    2022-05-04

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.

OSS Database features and specs

  • Comprehensive Coverage
    OSS Database provides an extensive collection of open-source software information, helping users find and explore a wide range of available projects.
  • Updated Information
    The platform regularly updates its database to provide users with the latest information about open-source projects, ensuring up-to-date resources.
  • User-Friendly Interface
    The interface is designed to be intuitive and easy to navigate, making it accessible for users to find relevant software quickly.
  • Community Engagement
    OSS Database encourages user contributions, fostering a sense of community and collaboration in maintaining accurate and comprehensive information.

Possible disadvantages of OSS Database

  • Limited Proprietary Software Listings
    As a dedicated platform for open-source software, it lacks information about proprietary alternatives, which might be a drawback for users considering all types of software solutions.
  • Dependency on Community Contributions
    Reliance on community contributions for updates may lead to inconsistencies or delays in the latest information being available.
  • Potential for Inaccuracy
    As with any platform that relies on community input, there is a potential risk of outdated or incorrect information being presented.
  • Varied Project Quality
    The quality of the listed projects can vary significantly, and users need to exercise discretion when choosing projects to adopt.

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

OSS Database videos

+ Add

Why your encrypted Database isn't secure: practical attacks against encrypted OSS databases

Category Popularity

0-100% (relative to Cal.com and OSS Database)

Cal.com

OSS Database

Appointments and Scheduling
100 100%
Appointments and Scheduling
0% 0
Open Source
0 0%
Open Source
100% 100
Calendar And Scheduling
100 100%
Calendar And Scheduling
0% 0
Software Directory
0 0%
Software Directory
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 OSS Database

Cal.com Reviews

Acuity Scheduling alternatives for businesses outgrowing it
The honest read: if you're leaving Acuity because your business outgrew simple scheduling — you need deposits, add-ons, multiple staff and locations, and ideally a booking site you own — 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

OSS Database Reviews

We have no reviews of OSS Database 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 OSS Database. While we know about 60 links to Cal.com, we've tracked only 5 mentions of OSS Database. 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 Wouldn’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 / 6 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 — 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 / 6 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 / 7 months ago
  • 🤝 Learn Front-End by Doing: Contribute to Cal.com's Open Source...🚀
    In this tutorial, we'll be focusing on Cal.com:. - Source: dev.to / about 1 year 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

OSS Database mentions (5)

What are some alternatives?

When comparing Cal.com and OSS Database, 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.

OpenApps.pro - Curated open-source apps for every task, vetted for quality. Find free, open-source alternatives to the tools you rely on without the SaaS price tag.

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

RepoStore - Explore apps published on GitHub, view release details, and install APKs instantly — all in one place. Developed using pure Kotlin, optimized for modern Android devices. - samyak2403/RepoStore

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

GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.

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