FullCalendar

Checked 2026-10-30 against official sources. Official current README verifies vanilla JavaScript, React, Vue, Angular, Preact and Web Component connectors; use the package/plugins, appropriate CSS and documented temporal-polyfill peer. The v7 source/usage differs from older v6 recipes. Standard non-premium plugins/bundle are MIT/free with copyright headers retained. Premium timeline/resource/print features are not covered by the core MIT license: commercial use requires a commercial license, eligible nonprofit use has separate noncommercial terms, and v7 copyleft use requires fully AGPLv3-compliant frontend and backend. OEM uses negotiated terms. Current pricing advertises Premium starting at $480; official purchase form confirms USD one-time tiers for 1/2/5/10 developer seats, perpetual use of the last eligible version and one year of support/upgrades. Optional annual renewal/auto-renew is separate: 50% off the base price before expiry, 25% after. Taxes were not established; no payment/form submission made. Editorial: useful as a focused scheduling interaction layer, not a general form/component kit; verify timezone, event-density and keyboard behavior in the actual app. Screen-reader/testing descriptions are upstream claims, not independent audit. Landing-page nested scroll flags identify the intentionally scrollable time-grid widget (530px viewport, 660px content), not missing page sections; no DOM expansion or synthetic stitching used.