Open-source alternatives to Patchwork

IRC client

Provides access to MAPI stores to facilitate investigation of Exchange and Outlook issues and to provide developers with a sample for MAPI development.

Matrix Client

Rocket.Chat client

Free email and calendar

OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network

Fast messaging synced across devices

Private messaging, end-to-end encrypted

ADAMANT is a decentralized anonymous messenger client based on the ADAMANT Blockchain

Run Android Messages as a desktop app, a la iMessage

Cross-platform encrypted email client

Desktop Telegram client with good customization and Ghost mode.

BasiliskLLM: Simplify LLM interactions with multi-chat, image analysis, and NVDA integration. Securely manage credentials and auto-update for seamless use with models like OpenAI and Anthropic. Perfect for users and developers.

Fast and secure desktop client for Berene Web

Free, open, Among Us proximity voice chat

A cross-platform CLI for managing BetterDiscord.

Check Microsoft 365 mail, Teams chats, and next meeting from the terminal

Cinny is a matrix client focusing primarily on simple, elegant and secure interface.

Privacy-focused cryptocurrency wallet with PoS staking, Tor v3, and encrypted messaging.

A decentralized and secure messenger app

Speak instead of typing. Native voice dictation for Windows, macOS, and Linux.

A patched version of Discord, with bot login support (and Vencord)

Exports Discord chat logs to a file

Trakt to Discord Rich Presence

CLI for Discord with SQLite backend

Dorion is an alternative Discord client aimed towards lower-spec or storage-sensitive PCs that supports themes, plugins, and more!

Unofficial ProtonMail Desktop App

Equibop is a custom Discord App aiming to give you better performance and improve linux support

Multi-column Fediverse client for desktop

An open-source, accessible, blazing fast Mastodon client.