Best Team Chat Software for Cloud

Pumble is a free team chat app allowing teams to collaborate and cut down on email, centralize communication, and improve productivity. Pumble offers unlimited number of users, unlimited chat history, voice calls and video calls, all for free. Every message will find its recipient quickly through private, direct or public channels, file sharing, or threads and mentions. More options are available in paid plans aimed towards professionals. Your communication hub will help manage non-desk employees, daily operations, communications, and human resource management. Pumble’s paid plan include features like: Screen sharing in video calls Customizable sidebar Guest access Managing user accounts options More file storage - 10GB per team member Pumble is available across platforms (web, Android, iOS, Windows, and Mac). Avoid messy emails, keep your communication organized and improve productivity with Pumble.

Troop Messenger is a secure business communication and team collaboration platform built for startups, SMBs, enterprises, and government organizations. It combines instant messaging, audio and video calling, group chats, file sharing, remote screen sharing, and productivity tools in one workspace. Available as both SaaS and On-Premise, Troop Messenger offers enterprise-grade security with end-to-end encryption, LDAP/SSO, Multi-Factor Authentication (MFA), role-based access, audit logs, and compliance support. Teams can collaborate through one-to-one chats, group discussions, AI-powered smart summaries, AI Translate, code snippets, advanced search, and file management. Compatible with Windows, macOS, Linux, Android, iOS, and Web, Troop Messenger helps organizations streamline communication, improve productivity, and securely connect employees, clients, vendors, and remote teams.

Element is a secure communications platform built on Matrix: a decentralised and end-to-end encrypted protocol. Bring your teams together, boost productivity and workplace satisfaction, while retaining complete ownership of your data. Element is a leader in the Forrester Wave: Secure Communications report. Easily collaborate with your partners, suppliers or clients with video calls and instant messaging: like email for the 21st century. You can even connect your Slack, MS Teams, WhatsApp accounts. On the other hand Element can be closed for high security environments using secure border and cross domain gateways, and even air-gapped deployments. Being built on Matrix, there is no single point of failure for the network thanks to the decentralised network architecture, making it perfect for mission-critical environments. Please contact us to explore how your business can benefit from Element.

Wire protects critical communications for the world’s most security-demanding organizations. Wire's highest security standards enable users to communicate securely, thanks to the most advanced encryption and its Zero-Trust architecture, while facilitating user administrators to manage and control their organization's information, guaranteeing the sovereignty of their data. Created by the founders of Skype, Wire provides end-to-end encryption for messages, audio and video conferencing, file exchange, external collaboration, and beyond. Used by most of the world's G7 governments and other security-critical organizations globally, Wire is pushing the limits of secure communication, pioneering work for standardized encryption with Messaging Layer Security. To learn more, visit wire.com

NuovoTeam helps organizations communicate with their non-desk workers via the ultrafast and reliable Push-to-Talk (PTT) app. NuovoTeam facilitates employee productivity tracking, communication and collaboration across your workforce. NuovoTeam is a Push-to-Talk (PTT) and all-in-one employee productivity suite that facilitates employee productivity tracking, communication and collaboration across your workforce with its distinctive features. With NuovoTeam you can 1. Communicate with your team via the lightning-fast Push-to-Talk (PTT) feature 2. Set up a single platform for VOIP calls, chats, audio & video calls, file exchange etc, 3. Have a unified contact management system for manual or bulk contact uploads 4. Track employee productivity by monitoring location, tasks & real-time clock in/out 5. Enhanced Monitoring and Reporting with Insights like work hours, role-based access

Threema Work is a secure and GDPR-compliant business messenger that facilitates mobile communication in companies and organizations. The messaging app is easy to use and doesn’t require a phone number or email address. With Threema Broadcast, companies can reach their entire staff, individual recipients, and external partners with a single click. Threema MDM allows administrators to preconfigure the app and make sure it’s used in line with corporate policies. Threema Work is a chat solution tailored to the needs of companies, organizations, schools, and governments that require the highest level of security in their business communication. Secure, easy-to-use, and privacy-compliant business messenger with an extensive feature set for efficient corporate communication. “Threema dominates as a privacy-first and flexible business communications app.” The Forrester Wave™: Secure Communications Solutions, Q3 2024

Rocket.Chat is a fully customizable, open-source communications platform for organizations with high standards of data protection. It enables real-time conversations between colleagues, with other companies, or with your customers, regardless of how they want to connect with you. Compared to similar players in the industry, such as Slack and Microsoft Teams, Rocket.Chat offers an on-prem deployment that enables organizations to take full ownership of their data. Rocket. Chat's open-source nature makes it more flexible to meet specific company needs and more scalable to follow your organization's growth. It also holds the only true MIT open-source license. We have over 1000 developers across the world contributing to the open-source code. Every day, tens of millions of users in over 150 countries and in organizations such as Audi Business Innovation, Deutsche Bahn, The US Navy, and Credit Suisse trust Rocket.Chat to keep their communications completely private and secure.

Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones. Zulip has modern apps for every major platform, powered by Electron and React Native. Zulip is 100% open source software, built by a vibrant community of hundreds of developers from all around the world. With 120,000 words of developer documentation, a high quality code base, and a welcoming community, it’s easy to extend or tweak Zulip. Zulip has a significantly larger and more active development community than other modern open source group chat solutions like Mattermost, Rocket.Chat, and matrix.org. Zulip has more than 90 native integrations. Several hundred more are available through Hubot, Zapier, and IFTTT. Or build your own integrations with Zulip’s powerful API.

Meetings with colleagues, customers and partners - have a personal conversation with one click. Keep conversations private with Nextcloud Talk. Nextcloud talk protects your communication better than other team collaboration platforms like Microsoft Teams or Slack, making sure your data stays on your servers. Nextcloud Talk goes further than other encrypted communication technologies by keeping even metadata from leaking. This ensures you stay in complete control of communications. When SCM was looking for a simple, secure and well designed messenger platform that could be hosted on-premises, a decision was made for Nextcloud Talk. A Professional Services project from Nextcloud GmbH provided several features SCM required and today, the legal, human resource, financial and PR experts of SCM can easily communicate and collaborate during their business trips.

Self-hosted and end-to-end encrypted Online Meeting, Team Chat, Audio/Video Calling and Communication Channels Solution for Enterprises. Following features are included in this release: 1. Join meeting from mobile by entering meeting id, password and name. 2. Login into CloudMeet using your credentials. 3. Initiate instant meeting or schedule a virtual meeting for later date. 4. View, accept/reject invites and start or join meetings. 5. Instant 1-to-1 or Group Chat with your colleagues with push notifications. 6. Instant 1-to-1 or Group Audio or Video calling with your colleagues.

IceWarp is a business email and collaboration platform that brings Email, Calendar, TeamChat, Conferences, Files and online Documents into one place, so IT teams get fewer tools and simpler administration. Includes: Business email on your own domain, with shared calendars, tasks and contacts TeamChat with group spaces and file sharing Video and audio Conferences with recording and webinars for up to 1,000 attendees Online Office for real-time co-editing of documents, spreadsheets and presentations File storage and sharing, plus AI assistance Web, desktop and mobile apps, and Outlook Sync Run it in the cloud with a data center of your choice, on your own servers, or as a hybrid. Built-in migration tools move users from Microsoft 365, Google Workspace and Exchange.

MESSAGENIUS - SECURE ENTERPRISE MESSAGING Messagenius is the enterprise messaging for secure, smart and integrated communications among colleagues: - Runs on your own private servers/clouds; - Enhances productivity with dedicated features; - Integrates into any software in use; - Gets 100% customisable and comes in white-label by default. COMPETITIVE ADVANTAGES Messagenius has 3 main competitive advantages in comparison with the mainstream messaging apps (WhatsApp, Slack, Skype, etc.): 1. SECURITY, DATA OWNERSHIP & COMPLIANCE - It runs on the customer’s private servers (on-premises/private-cloud). 2. PRODUCTIVITY - UX and UI are 100% customizable, up to white label. 3. INTEGRATION - It integrates into and with any software in use. TECHNOLOGY Messagenius is available for Android, iOS, web & desktop as: stand-alone messaging app, branded and customised in white label; add-on messaging feature, integrated into other software via SDK.

Virola Messenger is a secure team collaboration tool. It offers functionality that helps to bring distributed teams together and organize company workflow within one system. Virola Mesenger offers the following: - unlimited private and group chat rooms - possibility to create read-only news channels - possibility to create discussion boards - reactions to messages, mentions, replies, and discussion threads - files transfer - permanent chat history that is always available - flexible search - media files playback and preview - continuous voice and video meetings - meetings recording - issue tracking with task board - screen sharing and remote control - flexible permission framework Both self-hosted and cloud servers are available. Client apps for major desktop and mobile operating systems are available.

Work management and collaboration made easy and flexible for all teams across your organization. Essential work tools made simple. - Collaborate on a customizable work feed display that organizes all of your work posts chronologically like a social feed, making it easy to surf through projects and tasks seamlessly with everyone. - Forget about lost documents and constant resending of work. Attach important files and information on a post, pin it to find it quickly, and engage with the team directly through comments to get their feedback. - Schedule physical or virtual meetings by adding a location, video conference link through Zoom or Microsoft Teams integrations, and even set up reminder notifications so you never miss an event. - Invite external collaboration in projects through email or link for streamlined team work. Whether it’s through web, desktop, or mobile, stay connected until the work is done. Sign up for free and try it out for yourself!

A simple and secure collaboration platform that improves your team's productivity. Fully compliant with GDPR. Twake is your company’s main hub for managing key activities. Call your colleagues, and start a video conference with your entire team with native Jitsi integration. Start a call from a chat channel or organize it on a calendar event to hold your meetings on Twake. Use the calendar to organize your global team schedule. Create different calendars for each team, add events, deadlines, and tasks, and share them with all your collaborators. Install your favorite application in your workspaces. Each application is independent of your discussions, files, and calendars and is different between each workspace. View and edit your documents in real-time directly online, without having to download them. You can work with several collaborations on the same document in any format (MS Office, Google Doc, Libre Office, etc.)

OpenText GroupWise is a secure, enterprise-grade messaging and collaboration platform that combines email, calendaring, contacts, and scheduling into a single, flexible system. It is built for organizations that require strong security, compliance, and reliability across highly regulated industries such as government, education, utilities, and healthcare. The platform enables teams to customize the user interface, integrate with systems like Microsoft Exchange and Active Directory, and centrally manage contacts, address books, and shared calendars. GroupWise includes intelligent scheduling tools, travel-time adjustments, and collaboration features that help streamline workflows and improve daily productivity. Its security measures—such as multifactor authentication, encryption, and gateway protection—ensure that sensitive communications stay protected.

Zooid is an open-source team chat app built on the Matrix protocol, offering channels, threads, direct messages, and spaces. It can be self-hosted so conversation history and data remain on infrastructure the operator controls. The application is designed so that AI agents can take part in the same rooms as human team members. Agents that support the Agent Client Protocol (ACP), such as Claude Code, Codex, and opencode, can be added to a room, where their actions render as structured interface elements rather than plain text: permission requests appear as approval cards, tool calls as structured data, task plans as checklists, and sub-agent hierarchies as an expandable tree. Each agent runs in its own sandboxed container. Zooid is released under the MIT license and is self-hostable end to end.