Kahla is described as 'free and open-source, cross-platform business messaging tool that supports end-to-end encrypted message communication and automatic destruction of messages' and is an app in the Social & Communications category. There are more than 10 alternatives to Kahla for a variety of platforms, including Android, iPhone, Windows, Online / Web-based and Mac. The best alternative is Discord, which is free. Other great apps like Kahla are Slack (Freemium), Hangouts (Free), Mattermost (Freemium, Open Source) and Microsoft Teams (Freemium).
Whether you’re part of a school club, a gaming group, a worldwide art community, or just a handful of friends that want to spend time together, Discord makes it easy to talk every day and hang out more often. Create an invite-only place.
Slack is a unified communication platform built with an optimized workflow to keep modern teams focused and productive. A familiar chat interface facilitates discussions while advanced features are easily exposed based on context.
Kosmi is a free real time application and communication platform that offers voice, text and video calls along with games and applications such as SNES Party, NES Party, OpenArena, Poker, Virtual Cardtables, Synced YouTube and Cowatch Video.
Corteza Messaging is a secure, high performance, open source Slack alternative that allows your teams to collaborate more efficiently, as well as communicate safely with other organisations or customers.
Glip is instant messaging for teams and businesses to communicate and get work done at the same time. In Glip you work where your conversations are, so you always know what your team is doing and what needs to get done next.
Single collaborative customer support dashboard for all of your projects. Chat with your customers and your team members using single workspace. If it's an email sent to email@example.com or a chat request from yourproject2.com, it all goes into the same Plumm inbox.