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calcom
cal.diy
TypeScript2022–2026
calcom / cal.diy

cal.diy

Scheduling infrastructure for absolutely everyone.

19Distinct people
24Mentions
1Explicit recommenders
50KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Scheduling infrastructure for absolutely everyone.

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

as a fellow bootstrapped founder, hats off to the NeetoCal team I'm personally using Cal.com, it's free and I'm very happy. I'm also very biased because we interviewed the…

zcesur used a recommendation phrase. One indexed comment matches. This is a phrase match, not a verdict.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 8:03:49 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year24 dated mentions

Observed mentions: 2022-02-11 13:18:47 UTC to 2026-04-22 06:29:16 UTC.

0369122022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 5 mentions; 0 submissions, 5 comments20222023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 11 mentions; 1 submissions, 10 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 5 mentions; 1 submissions, 4 comments20242025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 2 mentions; 1 submissions, 1 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC505
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC11110
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC514
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC101
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC211

What Hacker News says

5 sources
> C# culture is closer to enterprise Java than it is to Typescript I mean, this really depends on what you're looking at. Here's a sample from the MongoDB client: https://github.com/mongodb/node-mongodb-native/blob/main/src... Here's a sample from Storybook: https://github.com/storybookjs/storybook/blob/next/code/core... Here's a sample from Prisma: https://github.com/prisma/prisma/blob/main/packages/client/s... Here's a sample from Cal.com: https://github.com/calcom/cal.com/blob/main/packages/core/Ev... These are all fairly mainstream repos so it's not a one off to see "enterprise" style coding in TypeScript. It's rather the specific use case that determines the style of the code that's written. In the examples above, there's no need for the teams to choose JavaScript classes and inheritance to model the logic, yet it likely better fit
Read the rest
s the programming model of those modules. Look at Nest.js as well: https://github.com/nestjs/nest/blob/master/packages/core/rou... The whole codebase of Nest.js looks an awful lot like Spring or ASP.NET (controller syntax) probably because there's a lot of crossover in terms of what APIs need at scale and how to logically organize that logic. It just so happens that most use cases for C# and Java favor applications at a larger scale. Another key difference being object scope and lifecycles -- something that rarely comes into play in the generally single-threaded Node runtime. This being one of the key reasons why dependency injection is a thing in C# and Java land.
In What's New in F# 9
I'm not sure I personally agree with this, and I'm not 100% sure the developer community at-large does either... Let's take a few examples, which I've shared elsewhere in similar discussions: - GitLab: Open Source or Open Core? Most would say open source, but (I assume) you would argue open core [0]. - Plausible: Open Source or Open Core? They say open source, but it's actually open core [1]. - Cal.com: Open Source or Open Core? They say open source, but once again, open core [2]. - Posthog: Open Source or Open Core? They say open source, but actually open core [3]. - Sidekiq: Open Source or Open Core? Open... core [4]. Yet, every dev I know would consider these projects Open Source... and yet also Open Core. So there's a disconnect somewhere. Under this mindset, very few open source startups are actually open source, yet everybody says t
Read the rest
In Going open-source as a VC-Backed company

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