Whaller Alternatives for Android

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

Facebook is the world's largest social network platform.

Slack is a cloud-based team collaboration tool.

Discord is a freeware proprietary VoIP application designed for gaming communities.

Basecamp is a project management web app.

Glip is fully searchable, real-time group chat; video chat, task management, file sharing app.

Rocket.Chat free open source chat solution.

Podio is a cloud-based collaboration service.

Yammer is a freemium enterprise social networking service used for private communication within organizations.

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.

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

Huddle is a team collaboration & project management software for enterprise and government.

Jostle is a people engagement platform mainly focused on employee engagement.

Azendoo is a project management & team collaboration platform.