Top 10 Open-source Messaging Platforms for Eastern Europe

2026. Element made encrypted chat history accessible



Until now, when a new member was added to an encrypted chat in Element, they couldn't see the conversation history. You need to make screenshots of the chat to provide them with the necessary context. Now, Element has added secure history sharing for new chat members. The messenger securely transmits the necessary history decryption keys to the new member upon invitation. The administrator can decide whether to allow history sharing for each chat. This method combines Matrix's decentralized and secure architecture with the convenience expected of modern messaging systems. Whether it's a new colleague learning a project, someone you simply forgot to invite to a new chat, or a community member joining a long-standing discussion, you no longer have to worry about whether they have the necessary context.


2024. Mattermost now allows you to connect any AI models to chats



Mattermost, an open-source collaboration platform, has introduced AI model connectivity, which will help government, defense and mission-critical organizations integrate large-scale LLM language models into their communications (via OpenAI-compatible APIs). This will speed up workflows and enable insights from chats, third-party tools, calls, and other data. Mattermost claims that the new tool, called Mattermost Copilot, will enable organizations to leverage AI while maintaining data privacy. The platform also provides a collaborative workspace that can integrate with isolated private clouds and public cloud generative AI services.


2011. Cisco launches pumped-up Jabber



Cisco is finally launching the product Cisco Jabber based on the acquired in 2008 platform Jabber XCP. Cisco Jabber is an enterprise multimedia messenger, that besides online status control and text messaging also provides voice and video calls, conferencing, video-mail and screen-sharing. And it works on PC, Mac and mobile platforms - iPhone, iPad, Nokia, Android and BlackBerry. And the server-side can work in the cloud or on a local server. Of course the app is based upon the XMPP messaging protocol, which means that it’s compatible with many other XMPP-compatible IM services, including GTalk, AIM and Sametime. Cisco Jabber can also "talk" to other Cisco communicative solutions: WebEx, Cisco Telepresence, Cisco UC, Cisco IP-phones. In addition, it integrates with MS Office and users can initiate chat or video-chat directly from office applications such as MS Outlook.