WebCalendar is unclaimed —

WebCalendar

Open-source PHP calendar app·k5n.us

Free plan · Open source

WebCalendar is an open-source, self-hosted PHP calendar application. It supports Docker-based installation, integrates with an MCP (Model Context Protocol) server so AI assistants like Claude can read and manage the calendar, and offers a companion WordPress plugin for displaying events. Recent updates include AI scheduling via MCP, a WordPress export page, and restored translations.

What it's for

Self-hosting a personal or team calendarConnecting an AI assistant (e.g. Claude) to manage and query calendar events via natural languageDisplaying and managing large numbers of events on a WordPress siteRunning the calendar behind a reverse proxy (Caddy, Nginx, Traefik) with HTTPSInstalling and deploying the calendar via Docker Compose with MariaDB

Features 10

Docker Compose installation support
MariaDB persistent data support
MCP (Model Context Protocol) server for AI scheduling and calendar management
Recurring event support with exception handling (e.g. skip specific days)
Restored translations (77 languages/translations mentioned)
Reverse proxy support with HTTPS (Caddy, Nginx, Traefik)
RFC 5545-compliant iCalendar parsing/writing (via php-icalendar-core)
Self-hosted deployment
WordPress calendar plugin that scales to 100,000 events
WordPress export page

At a glance

free tieropen sourceself-hostableAPI

TypeWeb app

DeploymentSelf-hosted

PlatformsWeb

Fordevelopers, self-hosting users, WordPress site owners

Integrations

TraefikClaudeWordPressCaddyNginxMariaDBMCPDocker

Resources

Docs