Software Alternatives, Accelerators & Startups

Cal.com VS Immutable.js

Compare Cal.com VS Immutable.js and see what are their differences

Cal.com logo Cal.com

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

Immutable.js logo Immutable.js

Immutable persistent data collections for Javascript which increase efficiency and simplicity. - immutable-js/immutable-js
  • Cal.com Landing page
    Landing page //
    2023-10-08
  • Immutable.js Landing page
    Landing page //
    2023-10-15

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

Immutable.js videos

Immutable.js Tutorial - How to Create Immutable Data Structures with Immutable.js

More videos:

  • Review - Immutability is Changing: From Immutable.js to Immer - ForwardJS 2019

Category Popularity

0-100% (relative to Cal.com and Immutable.js)
Productivity
95 95%
5% 5
Appointments and Scheduling
APIs
0 0%
100% 100
Appointment Scheduling
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 Cal.com and Immutable.js

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

Immutable.js Reviews

We have no reviews of Immutable.js yet.
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Social recommendations and mentions

Based on our record, Cal.com seems to be a lot more popular than Immutable.js. While we know about 53 links to Cal.com, we've tracked only 4 mentions of Immutable.js. 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 (53)

  • 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 / 3 months 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: 6 months ago
  • 🔥🔥 Our awesome OSS friends 😍
    Cal.com- Cal.com is a scheduling tool that helps you schedule meetings without the back-and-forth emails. - Source: dev.to / 6 months ago
  • Cal.com Selfhost Issue: Deploying cal.com on selfhost environment gives prisma is not defined issue.
    Has any one deployed cal.com with selfhosted environment. Is yes how would have configured prisma for the same. Source: 8 months ago
  • Open Source, EVERYTHING??
    Recently I came across a company called cal.com, it's a Calendly alternative, but the catch is the entire software is open source: https://github.com/calcom/cal.com. Source: 8 months ago
View more

Immutable.js mentions (4)

  • Functional immutable game state
    The Immutable.js README has a much more complete description of immutability and why you might want to use the library. Also worth mentioning that Immer is an alternative which is a bit easier to get started with. - Source: dev.to / over 1 year ago
  • How do I handle objects with shared references in React?
    You could create explicitly immutable references and state by using a tool like Immer.js or Immutable.js and do something like your example using their API. Source: about 2 years ago
  • Introduction to Functional Programming in JavaScript
    There are also libraries such as Immer and Immutable that were created to make our lives easier while dealing with immutability in JavaScript. - Source: dev.to / over 2 years ago
  • How to handle "mutable state" in a pure functional way
    Use persistent immutable data structures (as implemented in, for instance, mori or Immutable.js) to represent the state. As much as possible, push calculations into referentially transparent functions (i.e., input depends purely on output) which take persistent data. Write the interactions with the real world in imperative style. Source: over 2 years ago

What are some alternatives?

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

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

HeyForm - Paperless data collection with better data insights

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

Quick Freeze - Move faster by skipping the setup and management of local databases and direct integrations.

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.

Proof.ink - Proven immutable data stored on the Steem blockchain