Calendar sync tool & universal calendar MCP server. Aggregate, sync and control calendars on Google, Outlook, Office 365, iCloud, CalDAV or ICS.
Sync ICS feeds like holidays, waste pickup, and F1 calendars into your CalDAV calendar (e.g., mailbox.org). Supports emoji mapping, recurring events, location filters, deduplication, and Docker automation.
Free, open-source property manager for short-term rental hosts. Sync Airbnb + Booking.com calendars, automate cleaning schedules, extract guest passport data. Live at renttools.io.
A privacy-focused Google Apps Script that automatically syncs and consolidates multiple source calendars into one clean availability calendar.
Open-source, self-hosted productivity hub: tasks, projects, notes, urgent reminders and two-way Google/Apple Calendar sync. Cross-platform Flutter app (iOS, Android, Web, macOS, Windows, Linux) + Node.js/MySQL backend. Alternative to Todoist, TickTick and Apple Reminders.
Bidirectional Apple CalDAV/iCloud and Google Calendar sync daemon built with TypeScript, Node.js, and PM2.
Microsoft 365 integration for Frappe/ERPNext — Outlook calendar two-way sync, Teams meetings & transcripts (the Microsoft equivalent of Frappe's Google Calendar).
AI-powered event scraper for Taiwan medical societies—automatically extract events from hematology, oncology, internal medicine websites and sync to Google Calendar via Claude Code skill
A chrome extension which allows Boston University students to sync their class schedule with Google Calendar, created as a submission to BostonHacks 2023
Pure-Go client library for Microsoft Exchange ActiveSync (EAS) 14.1 — WBXML codec, Autodiscover, Provision, FolderSync, Sync and Ping commands with typed Email, Calendar, Contacts and Tasks models. Spec-first (TDD) against the MS-ASWBXML / MS-ASCMD / MS-ASHTTP open specifications.
Privacy-focused AI assistant for Microsoft Teams. Automatically detects and syncs events to your calendar using local API keys.
Syncs Codeforces, AtCoder, LeetCode & CodeChef contests to Google Calendar automatically. No server. No maintenance. Just GitHub Actions.
Self-hosted, bidirectional calendar & contacts sync across iCloud, Google, Microsoft/Outlook and any CalDAV/CardDAV server — an open-source SyncGene alternative with a web UI (vdirsyncer + FastAPI).
Non-interactive TimeTree calendar bridge for Hermes Agent
Sync your EPSI school schedule to Apple Calendar, Google Calendar, or any iCal app
清华课表一键同步到日历。自动登录统一身份认证，获取学期课表，生成 ICS 文件或直接写入 Outlook。支持 SM2 加密、二次认证、研究生/本科生课表。Sync your Tsinghua course schedule to any calendar app.
Free, self-hosted Clockwise alternative. Syncs personal Google Calendar to work calendar as "Busy" blocks with travel time via Google Maps. Runs on Google Apps Script.
Serverless Python integration that syncs Notion tasks with Google Calendar using webhooks, Flask, and Vercel.
Python Flask service deployed on Cloud Run that syncs Google Sheets data to Google Calendar with SQLite persistence and Cloud Scheduler automation.
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