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A macOS app that provides an MCP server to your Messages, Contacts, Reminders and more

🔥 PlainApp is an open-source app that lets you securely manage your phone from a web browser. Access files, media, contacts, SMS, calls, and more through a simple, easy-to-use interface on your desktop.

Self-hosted multi-account email client with support for JMAP/IMAP/SMTP, direct integration with Gmail and Outlook APIs. Also Contacts and Calendar. Built with Go, templ, and HTMX, SQLite for storage

Dolibarr ERP CRM is a modern software package to manage your company or foundation's activity (contacts, suppliers, invoices, orders, stocks, agenda, accounting, ...). it's an open source Web application (written in PHP) designed for businesses of any sizes, foundations and freelancers.

Cyrus IMAP is an email, contacts and calendar server

📇 Contacts app for Nextcloud

Condo is an Open Source property management SaaS that allows users to manage tickets, resident contacts, properties, payment tracking, create invoices, and oversee a service marketplace, all while offering an extension system for mini-apps, making it an ideal platform for property management companies and those servicing shared properties.

SMS Import / Export is a simple Android app that imports and exports SMS and MMS messages, call logs, contacts, and blocked numbers from and to JSON / NDJSON files.

Browser-side WhatsApp Web automation library. Exposes the WPP JavaScript API for chats, messages, contacts, groups, media and events; powers WPPConnect integrations and extensions.

Easy and quick contact management with no ads, handles groups and favorites too.

Webbased Amateur Radio Logging Software - Log your contacts from everywhere!

Rivo is an Android Phone App (Dialer + Contacts) built with Material 3 Expressive guidelines, with a focus on customization and a modern, intuitive calling experience.

☁️ Ultra-fast, secure & lightweight self-hosted cloud storage — your files, photos, calendars & contacts, all in one place. Built in Rust.

📞 Privacy-focused caller ID React Native app. Identify unknown callers locally without cluttering your main contacts. Built with Expo, Material Design 3, and custom native modules.

Kurrier is a modern, self-hosted workspace for email, calendar, contacts and storage.

An universal search app for Android which can search apps, shortcuts, contacts, files, calendar events, notes, settings and the internet.

MCP server for Thunderbird - enables AI assistants to access email, contacts, and calendars

Self-hosted JMAP webmail for Stalwart Mail Server. Mail, calendar, contacts, and files in one client.

A CLI tool to query your local WeChat data — chat history, contacts, sessions, favorites, and more. Designed for LLM integration.

Self-hostable CRM template for WhatsApp — shared inbox, contacts, sales pipelines, broadcasts, and no-code automations. Fork it, brand it, host it.

Mail and calendar for Linux and macOS. Gmail and IMAP accounts, Google Calendar, contacts, OpenPGP and S/MIME. GTK4 and libadwaita, written in Rust.

MailCraft: an open-source, clean-room mail, calendar and contacts program in pure Rust, for Microsoft 365, Outlook.com and IMAP. Early alpha.

Native iCloud apps for Windows and Linux, built in Rust. Notes, Reminders, Calendar, Contacts, Drive and Photos, offline and in sync with your iPhone.