Instant Messaging Client Apps and Services

Otr.to is a secure, privacy-centric, browser-based chat client leveraging Off-the-Record (OTR) encryption. It offers peer-to-peer communication for enhanced anonymity and decentralization, making it a strong choice for private and secure instant messaging without requiring installations.

Gajim is a free and open-source instant messaging client for the XMPP protocol. Built using the GTK+ toolkit, it offers a wide array of features for secure and flexible communication, including encrypted chat, group conversations, multi-protocol support via gateways, and extensive customization options.

ChatSecure is a privacy-focused messaging application for iOS that leverages the robust and decentralized XMPP protocol. It offers strong end-to-end encryption using OTR and OMEMO, ensuring confidential communication.

Ekiga, formerly known as GnomeMeeting, is a free and open-source VoIP and video conferencing application. It allows users to make audio and video calls to other compatible SIP/H.323 clients and even landlines/mobile phones via integrated third-party services, offering a versatile communication solution.

Ring (SFLphone) is a free and open-source communication platform offering secure messaging, voice, and video calls. It leverages decentralization and end-to-end encryption for enhanced privacy across multiple operating systems including Linux, Windows, macOS, and Android.

Kopete is a versatile, free and open-source instant messaging client designed initially for the KDE Plasma desktop. It distinguishes itself by supporting a multitude of protocols, allowing users to connect to various chat networks from a single application.

Empathy is a versatile multi-protocol messaging client designed for text, voice, and video communication across numerous IM networks. It offers features like file transfers, location sharing, and integration with various services, providing a unified communication experience.

Digsby was a multi-protocol instant messaging client that unified connections to various chat networks and social media platforms. It allowed users to manage their conversations and updates from services like Aim, Msn, Yahoo, Twitter, Facebook, and Myspace all within a single, integrated application.

Pidgin is a free and open-source multi-protocol instant messaging client designed to connect users across various chat networks with a single application. It's highly extensible through plugins and supports a wide range of protocols including XMPP, ICQ, and IRC.

Otr.to is a secure, privacy-centric, browser-based chat client leveraging Off-the-Record (OTR) encryption. It offers peer-to-peer communication for enhanced anonymity and decentralization, making it a strong choice for private and secure instant messaging without requiring installations.

Gajim is a free and open-source instant messaging client for the XMPP protocol. Built using the GTK+ toolkit, it offers a wide array of features for secure and flexible communication, including encrypted chat, group conversations, multi-protocol support via gateways, and extensive customization options.

ChatSecure is a privacy-focused messaging application for iOS that leverages the robust and decentralized XMPP protocol. It offers strong end-to-end encryption using OTR and OMEMO, ensuring confidential communication.

Ekiga, formerly known as GnomeMeeting, is a free and open-source VoIP and video conferencing application. It allows users to make audio and video calls to other compatible SIP/H.323 clients and even landlines/mobile phones via integrated third-party services, offering a versatile communication solution.

Ring (SFLphone) is a free and open-source communication platform offering secure messaging, voice, and video calls. It leverages decentralization and end-to-end encryption for enhanced privacy across multiple operating systems including Linux, Windows, macOS, and Android.

Kopete is a versatile, free and open-source instant messaging client designed initially for the KDE Plasma desktop. It distinguishes itself by supporting a multitude of protocols, allowing users to connect to various chat networks from a single application.

Empathy is a versatile multi-protocol messaging client designed for text, voice, and video communication across numerous IM networks. It offers features like file transfers, location sharing, and integration with various services, providing a unified communication experience.

Digsby was a multi-protocol instant messaging client that unified connections to various chat networks and social media platforms. It allowed users to manage their conversations and updates from services like Aim, Msn, Yahoo, Twitter, Facebook, and Myspace all within a single, integrated application.

Pidgin is a free and open-source multi-protocol instant messaging client designed to connect users across various chat networks with a single application. It's highly extensible through plugins and supports a wide range of protocols including XMPP, ICQ, and IRC.