Software Alternatives, Accelerators & Startups

Nango VS Cal.com

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

Nango logo Nango

The fastest way to ship integrations with 500+ APIs

Cal.com logo Cal.com

Cal.com (formerly Calendso) is the open source Calendly alternative.
Not present
  • Cal.com Landing page
    Landing page //
    2023-10-08

Nango features and specs

No features have been listed yet.

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 Nango

Overall verdict

  • Nango is a strong, developer-focused open-source platform for building and managing product integrations, offering pre-built connectors and unified APIs that significantly reduce the time and effort needed to ship integrations.

Why this product is good

  • Open-source with a large library of pre-built integrations and connectors for hundreds of APIs
  • Handles OAuth flows, token refresh, and authentication management out of the box, saving significant development time
  • Provides unified APIs and syncing infrastructure so you can pull and push data reliably without building custom sync logic
  • Developer-friendly with good documentation, SDKs, and flexibility to self-host or use the managed cloud version
  • Actively maintained with a responsive community and strong support

Recommended for

  • SaaS companies that need to build many third-party integrations quickly
  • Development teams looking to offload OAuth and token management complexity
  • Startups wanting to ship customer-facing integrations without a large engineering investment
  • Teams that prefer open-source tools with self-hosting options for greater control and data privacy
  • Product teams needing reliable data syncing between their app and external APIs

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.

Nango videos

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

Add video

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 Nango and Cal.com)
Developer Tools
100 100%
0% 0
Appointments and Scheduling
Productivity
11 11%
89% 89
Calendar And Scheduling
0 0%
100% 100

User comments

Share your experience with using Nango and Cal.com. 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 Nango and Cal.com

Nango Reviews

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

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

Social recommendations and mentions

Based on our record, Cal.com should be more popular than Nango. 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.

Nango mentions (7)

  • Best integration platform for mail and calendar integrations (2026)
    Nango is the integration platform where coding agents build integrations. Engineers, or coding agents like Claude Code, Cursor, and Codex, write integrations as code in your repo, and Nangoโ€™s cloud runtime runs them securely and at scale. - Source: dev.to / about 2 months ago
  • How to sync large amounts of contacts from the HubSpot API
    You will need a Nango account (the free tier is enough for development). Then register your own HubSpot OAuth app with the crm.objects.contacts.read scope, set the OAuth callback URL to https://api.nango.dev/oauth/callback, and configure HubSpot as an integration in the Nango dashboard. - Source: dev.to / 2 months ago
  • Best agentic API integrations platform in 2026
    Nango is the only platform in this comparison that treats all three loops as first-class, and the only one where the same code an agent builds today runs unmodified in a hardened tenant-isolated runtime tomorrow. - Source: dev.to / 3 months ago
  • Ask HN: Who is hiring? (February 2026)
    Nango | Full-time | Remote (North America, LATAM, Europe) | https://nango.dev Nango (YC W23) is a developer infrastructure company and the leading provider of API access for agents and apps. It enables AI applications to connect to the real world through integrations. More than 250 paying customers rely on Nango today, including Replit, Mercor, and Exa. We are a YC-backed,... - Source: Hacker News / 6 months ago
  • 4 Best AI Agent Authentication platforms to consider in 2026 ๐Ÿ”
    Nango fits teams that already have an agent stack and want OAuth and token handling done cleanly. - Source: dev.to / 6 months ago
View more

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

What are some alternatives?

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

Composio.dev - Make Agents Actually Useful!

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.

n8n.io - Free and open fair-code licensed node based Workflow Automation Tool. Easily automate tasks across different services.

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

Pipedream - Integration platform for developers

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