Open Source Communication Software
Thunderbird
A free an open-source email client developed openly by the Mozilla Foundation and the community. Thunderbird is easy to setup and customize and supports POP and IMAP. The email client comes with all features needed to search, filter, write and manage emails, but also have builtin support for live chat between contact and RSS/Atom feed reader.
Pleroma
Pleroma is a free and open source, federated, social networking server built on open protocols. It consists of several openly developed components, including the Pleroma server and the default Pleroma frontend. Since Pleroma is built for the fediverse it is compatible with other socially federated networks such as GNU Social, Mastodon, and many other ActivityPub implementations.
Hummingbard
Hummingbard is an experiment in building communities on top of the Matrix network. Hummingbard has social elements like user profiles, posts, communities, sharing and so on. It is intended to be more than just a decentralized link aggregator or a microblogging platform.
Docsify
Docsify is an all-in-one mail tracker for Gmail that includes email, link, and attachment tracking. Docsify can help you increase your productivity when using Gmail as it helps you create and use your own emtail templates and schedule emails.
Ning
With Ning you can create your own social network specifically geared towards a topic or community. You don’t have to be a developer to start building with Ning, their drag-and-drop network builder empowers you to easily create a professional website and social network in a matter of minutes. You can also customize your network with HTML and CSS and make it your own. Through solid integrations with Twitter, Facebook, LinkedIn and Google, user registrations becomes as simple as clicking a button. To-date, Ning has been used by over 2 million people and organizations to create immersive social networks and communities.
Mattermost
Mattermost is an open-source, self-hostable enterprise team collaboration and messaging application. The software can be deployed to on-premis or to cloud instances. Mattermost is designed for internal use within organizations and businesses in financial services, government, healthcare, remote work, and enterprise DevOps, where teams use Mattermost to power collaboration at every stage of the DevOps lifecycle.
Armia Chat SDK - A lightweight SDK in REACT Native
Creating a messaging platform like WhatsApp, Facebook messenger, Signal can be easily done through Chat SDK.User can easily add chat functionality in their mobile as well as in desktop. The react native armia chat sdk library includes components you need to build a functioning chat user experience in React with support for one to one and group chat. User can send audio and video messages, exchange photos and files. It uses Firebase as the backend service. You can download the FREE SDK to save months of development time from your project using the Chat SDK.