Glip Alternatives for Windows

Skype is an instant messaging and VOIP (Voice Over Internet Protocol) client to communicate with people in a distant place.

Slack is a cloud-based team collaboration tool.

Trillian is a proprietary multiprotocol instant messaging application.

Mattermost is an open source, private cloud Slack-alternative, Workplace messaging for web, PCs and phones. MIT-licensed.

fluxday is a user-friendly, free & opensource task & productivity management tool for growing startups.

Rocket.Chat free open source chat solution.

eXo Platform is an open source, standard-based, Enterprise Social Collaboration Platform.

HumHub is a free social network software and framework built to give you the tools to make teamwork easy and successful.

Matrix is an open protocol for real-time communication. It is designed to allow users with accounts at one communications service provider to communicate with users of a different service provider via online chat, Voice over IP, and Videotelephony.

TribeScale is an All-in-One platform to coordinate your team around what really matters - communication, goals, decisions, tasks and results.

Active Collab is a web-based project management tool.

Flock is a communication app for teams. Packed with tons of productivity features, Flock drives efficiency and boosts speed of execution.

Grape is an REST-like API framework for Ruby. It's designed to run on Rack or complement existing web application frameworks such as Rails and Sinatra by providing a simple DSL to easily develop RESTful APIs.

Mavenlink is an advanced project management, task collaboration, resource allocation, work management and professional services automation platform.

Fleep enables communication within and across organizations, be it your team chats, project communication or 1:1 conversations.

Dapulse is a smart collaboration and communication app you can use to get your team members working in sync in one place.

Zulip is a chat and collaborative software.

Dialog Messenger is a handy and feature-rich enterprise multi-device messenger available for server or cloud.

Gitter is an open source instant messaging and chat room system for developers and users of GitHub repositories.

buckets.co helps you optimize workflows & collaboration at all levels.

Hubgets provides chat, voice and video turning team communication.

taskblitz is set of tools to collaboratively get your work done including project management, chat, time tracking and invoicing.