Slack is described as 'Facilitates teams' real-time collaboration with versatile chat interface and advanced search in configurable channels across multiple platforms' and is a leading Group Chat app in the social & communications category. There are more than 100 alternatives to Slack for a variety of platforms, including Web-based, Android, iPhone, Windows and Mac apps. The best Slack alternative is Zulip. It's not free, so if you're looking for a free alternative, you could try Zulip or Element. Other great apps like Slack are Rocket.Chat, Discord, Matrix and Trello.
Secure self-hosted platform unites private and group messaging, voice and video meetings, meeting recording, file transfer, issue tracking, screen sharing, remote control, and flexible permissions for on-premises collaboration in both corporate and personal use cases.
United States
JANDI is a group-oriented enterprise messaging platform with an integrated suite of collaboration tools for workplace.
United States
monocles chat is a fork of blabber.im and Conversations with some changes, to improve usability.
Germany
EU
Private and Secure Instant Messenger for Office designed specifically for keeping remote employees and multiple offices in sync.
"Give your team the freedom to chat, talk, share and interact together from anywhere, on any devices" by using it.
India
Kahla is a free and open-source, cross-platform business messaging tool that supports end-to-end encrypted message communication and automatic destruction of messages.
MyChat provides LAN/on-premise deployment, file sharing, calls, task boards, forums, integrations, and admin control without moving company conversations to a public cloud.
Ukraine
Rainbow is a Unified Communication as a Service (UCaaS) and Communication Platform as a Service (CPaaS). It is a hybrid cloud solution for enterprise communications which aims to connect people and systems optimally.
FranceEU
InfinCE is a digital workplace platform that makes your day-to-day work routine smart and productive. Work from anywhere at your comfort, while keeping you connected, engaged, and informed. InfinCE offers a wide range of collaboration, communication, and productivity tools...
United States
GermanyEU
Beekeeper is an award-winning digital workplace app that connects dispersed workforces, combining operational systems and internal communication channels within one secure, intuitive employee portal.
Switzerland
WhatsApp Business enables you to have a business presence on WhatsApp, communicate more efficiently with your customers, and help you grow your business.
United States
HeySpace is a free task and simple project management software with communication and collaboration features.
