Cal.com Headlines

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The Register

AI's not going to kill open source code security • The Register

The Register publishes an opinion column arguing against Cal.com’s claim that AI-driven threats justify closing its commercial codebase. The piece uses Cal.com’s licensing shift as the central example in a broader debate over AI and open source security.

Companies:Cal.com
OSS News & ViewsApr 26, 2026

FOSS Force

AI Pushes Cal.com to Shutter Open and Go Nonfree - FOSS Force

FOSS Force covers and critiques Cal.com’s decision to abandon open source licensing for its main product, arguing the AI-security rationale amounts to security through obscurity. The article also discusses Cal.diy, the company’s new open-source community version.

Companies:Cal.com
OSS News & ViewsApr 17, 2026

It's FOSS

Cal.com Goes Close Source Because "AI Can Easily Exploit Open Source Software"

It's FOSS reports on Cal.com's decision to switch to a closed-source model after five years, attributing the change to the growing threat of AI-powered security issues.

Companies:Cal.com
Media MentionApr 17, 2026

ZDNET

'Like handing out the blueprint to a bank vault': Why AI led one company to abandon open source | ZDNET

ZDNET reports that Cal.com is moving its flagship open-source scheduling product to a proprietary model because of AI-enabled vulnerability discovery risks. The article includes comments from Cal.com leadership and describes the release of Cal.diy.

Companies:Cal.com
Media MentionApr 15, 2026

PR Newswire

Open source is collapsing under AI-powered threats | Cal.com

PR Newswire distributes Cal.com's announcement regarding its transition to a closed-source model, citing AI-powered threats to open source.

Companies:Cal.com
AnnouncementApr 15, 2026

Cal.com Blog

Going Closed-Source: Technical Changes Behind Cal.diy

This article details the technical changes and features removed from Cal.com as it transitions to a closed-source model, introducing Cal.diy.

Companies:Cal.com
AnnouncementApr 15, 2026

The New Stack

Cal.com goes closed source: A security reckoning for OSS

The New Stack reports on Cal.com's decision to move its core codebase to a closed repository, highlighting the company's concerns about AI-driven security risks and the broader implications for open-source projects.

Companies:Cal.com
OSS News & ViewsApr 15, 2026

Cal.com Blog

Cal.com Goes Closed Source: Why AI Security Is Forcing Our Decision

Cal.com announced its decision to move its core codebase from open source to closed source, citing increasing AI-driven security risks and the need to protect customer data. They will maintain an open-source version called Cal.diy for hobbyists.

Companies:Cal.com
AnnouncementApr 14, 2026

Cal.com Blog

Cal.com 6.0 - Cal.com Companion, Public Holidays in OOO and More

This article from Cal.com Blog announces cal.com 6.0 - cal.com companion, public holidays in ooo and more. The announcement details new developments or features related to the topic.

Companies:Cal.com
AnnouncementDec 15, 2025

Cyber Security News

Critical Cal.com Vulnerability Let Attackers Bypass Authentication Via Fake TOTP Codes

The article from Cyber Security News discusses critical cal.com vulnerability let attackers bypass authentication via fake totp codes. It provides insights into the company or product mentioned.

Companies:Cal.com
Media MentionDec 8, 2025

Cal.com Blog

SMS Workflows for Automated SMS Notifications

The article from Cal.com Blog announces: 'SMS Workflows for Automated SMS Notifications'. This announcement, detailed in the URL slug as 'blog sms-workflows-automated-notifications', provides further insights into the development.

Companies:Cal.com
AnnouncementOct 9, 2025

TechCrunch

Open source tools to boost your productivity

TechCrunch published an article titled "Open source tools to boost your productivity." The article provides a guide to open-source alternative software.

Media MentionAug 11, 2024

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