ooVoo Alternatives for Linux

Skype is a versatile communication platform offering free voice and video calls to other Skype users, as well as affordable calls to landlines and mobile phones worldwide. It provides instant messaging, file sharing, and screen sharing features, making it a comprehensive tool for personal and professional connectivity across various devices.

Trillian is a versatile, multi-protocol instant messaging client that unifies various communication platforms like IRC, XMPP, and more into a single, user-friendly interface. It's designed for both personal and team collaboration, offering features like encrypted chats, group collaboration tools, and extensive customization options.

Viber is a comprehensive messaging and VoIP application enabling free and secure calls and messages to users worldwide. It offers robust features for both individual and group communication across various devices.

Jitsi is a free and open-source suite of secure, flexible communication tools. It offers multi-platform support for voice (VoIP), video conferencing, and instant messaging, emphasizing privacy and ease of use with no account required to start a meeting.

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.

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.

Apache OpenMeetings is a robust, open-source web conferencing and collaboration software. It provides a comprehensive suite of tools for online meetings, presentations, training, and group activities, all accessible directly through your web browser.

BigBlueButton is a powerful open-source web conferencing system designed for online learning and collaboration. It offers robust features like video conferencing, screen sharing, a multi-user whiteboard, breakout rooms, and polling, making it an ideal platform for virtual classrooms and team meetings.

Bit Chat is a secure, open-source, peer-to-peer instant messenger platform that prioritizes user privacy and security through robust end-to-end encryption and a decentralized network architecture. It empowers users with direct, encrypted communication, bypassing central servers and enhancing resistance to surveillance and censorship.

Sneek revolutionizes remote team collaboration by providing a constant visual presence, making distributed teams feel more connected and spontaneous. It's a video-first platform designed to replicate the informal interactions of a physical office environment.

Dialog Messenger is a robust, feature-rich enterprise messaging solution designed for businesses prioritizing security, privacy, and control. Available for both private server deployment and cloud hosting, it facilitates secure text, voice, and video communication across multiple devices, enabling seamless collaboration and real-time interaction within organizations.

YakYak is an unofficial desktop client for Google Hangouts, providing a dedicated application experience outside of a web browser with features focused on convenience and improved usability.