Secure Chat Windows Softwares

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RetroShare

RetroShare

Open Source

RetroShare is a secure, decentralized, and open-source communication platform built on a friend-to-friend network, offering encrypted file sharing, serverless email, instant messaging, and forums.

Strong emphasis on privacy and security through end-to-end encryption.
Anonymous Secure Filesharing
File Sharing Office & Productivity Social & Communications
Tox

Tox

Open Source

Tox is a free, open-source, and secure peer-to-peer instant messaging and video calling protocol designed for strong privacy and censorship resistance. It provides end-to-end encrypted communications without reliance on central servers.

Decentralized architecture enhances privacy and censorship resistance.
Ad-free
File Sharing Network & Admin Office & Productivity Social & Communications
Torchat

Torchat

Open Source

TorChat is a defunct decentralized anonymous instant messenger leveraging Tor hidden services for secure text communication and file sharing without central servers.

Strong anonymity through deep Tor integration.
Anonymity
File Sharing Social & Communications
Zulip

Zulip

Open Source

Zulip is a powerful open-source group chat application designed for team collaboration. It uniquely structures conversations around topics, enabling users to easily catch up on important discussions and manage information overload. Zulip facilitates secure communication with integrated file sharing and various integrations.

Excellent at organizing complex conversations with its unique topic-based struct...
GitHub integration
Development Office & Productivity Social & Communications
Wire

Wire

Free

Wire is a secure, cross-platform messaging and collaboration client offering end-to-end encryption by default for all communication types including messaging, voice and video calls, and file sharing across desktop and mobile devices.

Strong, always-on end-to-end encryption for all communication.
Encrypted chat
Photos & Graphics Security & Privacy Social & Communications
Pidgin-Encryption

Pidgin-Encryption

Open Source

Pidgin-Encryption is a plugin for the popular Pidgin instant messaging client that provides transparent, end-to-end encryption for your conversations using RSA.