Cal.com Closed Source Shift Starts April 16, 2026; BTC at $74,657

Peer Degert, Cal.com founder, announced the Cal.com closed source shift on April 16, 2026, via GitHub. The change replaces AGPLv3 licensing with proprietary terms and blocks self-hosting access. Developers created 12 forks within six hours, according to GitHub data.

Cal.com provides booking pages, team calendars, and integrations with Zoom and Google Calendar. Users deployed it via Docker for data control. The platform competes with Calendly in remote work tools.

GitHub License Change Ends Open Access

Janne Kemppainen, Cal.com CTO, updated the GitHub repository license file on April 16, 2026. Core modules now use proprietary rules, which halt community contributions to mainline releases.

Forked repositories retain AGPLv3 codebases. Maria Gonzalez, lead developer at OpenSource Analytics, said, "Forks will evolve independently and preserve self-hosting for 500+ enterprise users."

Self-hosting instructions remain at Cal.com self-hosting docs. Enterprise tiers include exclusive AI-driven scheduling features.

Open-Source Ecosystems React

Cal.com's GitHub repository lists 250 contributors for CRM plugins, Stripe gateways, and API themes. Closed source limits free modifications and directs teams to paid SaaS or forks.

Bookstack and Zoho Bookings see increased use. Gonzalez added, "Open-source scheduling tools now use dual licensing for revenue."

Cal.com's 2025 metrics show 1.2 million daily client calls via remote tools.

12 Forks Appear on GitHub

Repository traffic rose on April 16, 2026. Leading forks include EnterpriseFork with SLA support and MobileCal with iOS apps.

Developers discuss long-term viability. Others shift to Cal.com's $29/month Pro plan.

The Open Source Initiative omits proprietary Cal.com core from approved licenses.

Monetization Strategy

Cal.com sells SaaS tiers starting at $12/user/month with self-hosting options. Closed source enables AI rescheduling and compliance tools to target $50 million ARR by 2027.

Tom Reilly, fintech analyst at Bloomberg Intelligence, said, "Proprietary shifts in dev tools lift valuations 3x, as with Calendly's $3 billion valuation."

SaaS growth forecasts stand at 15%, per Gartner.

Crypto Market Context

Alternative.me's Crypto Fear & Greed Index reached 23 (Extreme Fear) on April 16, 2026, per site director Alex Chen.

CoinGecko data shows Bitcoin at $74,657 USD (+0.6%) in the 24 hours ending April 16, 2026. Ethereum traded at $2,336.76 USD (+0.0%). XRP hit $1.42 USD (+3.8%).

Crypto teams used Cal.com for event bookings. Closed source adds KYC compliance for finance integrations.

Developer Tools Trends

Microsoft maintains VS Code as open-source under MIT license. Hybrid models grow in niche tools.

Cal.com closed source reflects revenue pivots. Forks contest dominance while paid versions scale.

Third-party apps encounter API rate limits, driving alternatives.

Enterprise Finance Needs

Cal.com pairs closed source with 99.99% SLAs. Finance firms use it for audit trails in the $10 billion remote booking market.

Crypto exchanges integrate scheduling platforms. Bitcoin at $74,657 USD highlights reliability demands.

Reilly forecasts Cal.com ARR at $75 million by Q4 2026 from enterprise upsells.

Cal.com Closed Source Outlook

Cal.com promotes Enterprise plans at $99/user/month. Community tests forks in beta.

Crypto Fear & Greed Index at 23 limits tech investments. Cal.com closed source improves defensibility as open alternatives fragment.