Top self-hosted Slack alternatives include MirrorFly, Chanty, LarkSuite and Apphitect. These platforms offer real-time chat, voice calling, video meetings, and team collaboration features.
Slack is a cloud team collaboration software that suits small businesses. It organizes chat, supports file sharing, and allows third-party tool integration.
But Slack automatically hides messages and files after 90 days in its free plan. Our team could not retain the chat history for discussion during calls.
We also realised Slack is not the primary choice if the focus is on data control, scalability, and cost. Eventually, we had to evaluate a self-hosted instant messaging solution for our team communication and collaboration needs.
In this article, we will cover ‘10 best Slack alternatives in 2026, their key features & pricing, the need for self-hosted Slack alternatives, and how to choose the right solution’.
10 Best Self Hosted Slack Alternatives in 2026: TL;DR
We have summarised each Slack alternative platform’s suitable audience, top features, and pricing details in the below table for your reference.
| Slack Alternatives | Best for | Top Features | Starting Price |
|---|---|---|---|
| MirrorFly | SaaS startups, B2B businesses, enterprise organizations | HD video conferencing, self-hosted chat, custom AI chatbot integration | Custom pricing |
| Chanty | Small to medium-sized teams and startups | Unlimited search, teambook hub | Starts at $3 per user/month |
| Larksuite | Remote or hybrid teams with complex workflows | Unified messaging, Real-time doc editing | Starts at $6/user/month |
| Apphitect | Growing organizations and SMBs | White-label voice call, real-time messaging, on-prem speech-to-text | Custom quote upon request |
| Rocket.Chat | Teams in regulated industries | Live voice & video conferencing, End-to-end encryption | Custom pricing |
| Mattermost | Developers and IT teams | Public or private channels, direct messages | Custom quote |
| Zulip | Technical teams and academic researchers | Topic-based threading, Built-in integrations | Starts at $3.50 per user/month |
| Pumble | Small-to-medium businesses and remote teams | Voice & video messages, file sharing | Starts at $2.99 per user/month |
| NuovoTeam | Non-desk employees | 1:1 or 1:many PTT calls | Starts at $5 per user/month |
| Crisp | Growing businesses and startups | Shared CRM, multichannel support | Starts at $45/month per workspace |
First, Why Leave Enterprise Slack?
We will look into what businesses lack when using Slack and the benefits when switching to a self-hosted solution.
| Slack (Problem) (Why Slack Doesn’t Work for Every Enterprise) | Self-Hosted Solution (Your Own Slack. Your Own Server. Your Own Rules) |
|---|---|
| ❌ Limited customization | ✅ Unlimited customization |
| ❌ Third-party data storage | ✅ Complete data ownership |
| ❌ Vendor lock-in | ✅ Full branding control |
| ❌ Per-user licensing costs | ✅ One-time license cost |
| ❌ Cloud deployment | ✅ Self-hosted deployment |
Top 10 Self-Hosted Slack Alternatives in 2026
In this section, we have provided in-depth insights of Slack alternative platforms along with their key features and pricing models.
First, we will see MirrorFly.
1. MirrorFly IM – Enterprise Team Communication Software
MirrorFly IM is a CPaaS solution that allows organizations to build their own team communication platform. This self-hosted solution runs on an Ejabberd server that supports high-concurrent messaging for teams.
The WebRTC and Janus Media Servers enable voice and video calling capabilities. This solution allows teams to customize their entire workflow. You can add, remove, or modify this enterprise instant messaging software’s features without any restrictions.
Additionally, organizations can white-label this software by including their brand logo and theme. In short, MirrorFly helps enterprises create a fully customizable team communication software with in-app features.
Best for: SaaS businesses and large organizations that want custom IM software.
Key Features of MirrorFly:
- Conversational AI integration
- HD video conferencing
- SIP & VOIP calling
- Free migration option
- On-premises chat server
MirrorFly Pricing:
- Custom quote based on business needs.
2. Chanty – Streamlined Team Chat Software
Chanty’s messaging platform offers a clean interface for non-technical teams. It includes video calls, audio chat, text messaging, and task management in its platform.
Businesses switching from Slack find Chanty’s unlimited message history feature as a strong value proposition. The ‘Teambook’ feature organizes all conversations, tasks, and content in one place.
Also, it integrates with Trello, Asana, and Google Drive to enhance workflows.
Best for: Remote teams who want an affordable communication platform.
Key Features Of Chanty:
- Pinned Messages
- Channel Management
- Kanban Board
- Guest Access
- Admin Controls
Chanty Pricing:
- The business plan costs $3 per user/month, which is billed annually. For the enterprise plan, contact their sales team.
3. Larksuite – All-In-One Collaboration Platform
Lark is a team chat software that includes video conferencing, document sharing, calendar integration, and project management. This avoids the need for frequent switching between apps to improve team productivity.
The task approval workflows, OKR tracking, and HR features suit growing enterprises. Lark’s mobile design feels polished. Teams manage complex tasks such as approving budgets or editing docs without needing to open a laptop.
Best for: Unifying messages, video chat, email communication, and project tasks in one platform.
Key Features of Larksuite:
- Smart calendar integration
- Built-in chat translation
- Meeting summaries
- Search messages or files
- Enterprise-grade security
Larksuite Pricing:
- The paid plan costs from $6 to $12/user/month. The enterprise plan comes with custom pricing.
4. Apphitect – Internal Communication Solution
Apphitect is a custom team messaging solution that enables enterprises to build their own video chat apps. It’s designed on a microservices architecture that supports fault tolerance, low latency, and scalable team conversations.
The solution uses RabbitMQ to manage message queuing during traffic spikes to ensure zero message loss. Not only that, companies can completely personalize the SDK from features to design.
Unlike Slack, this custom team communication software can be hosted on any preferred environment without restrictions.
Best for: Medium and large organizations that need full source code access to chat software.
Key Features of Apphitect:
- 1-on-1 & group messaging
- 100+ third-party integrations
- Multimedia file sharing
- Meeting recording
- Multi-tenant chat server
Apphitect Pricing:
- It offers a lifetime license based on business requirements.
5. Rocket.Chat – Open-Source Team Chat Platform
Rocket.Chat is a messaging software built for organizations that need full control over data. Most government agencies choose Rocket.Chat over Slack as it supports self-hosting and cloud deployment.
Its omnichannel feature unifies customer support and allows human agents to manage chats from WhatsApp, SMS, and live chat.
Best for: Organizations that prioritize enterprise-grade security.
Key Features of Rocket.Chat:
- Single Sign-On
- Threaded Conversations
- Multiple-Language Interface
- Audio/Video Conferencing
- Built-in Translation
Rocket.Chat Pricing:
- The pro and enterprise plans require contacting their sales team.
6. Mattermost – Chat Platform for DevOps Teams
Mattermost is a messaging platform particularly designed for IT teams. The chat software connects directly to GitLab, GitHub, and Jenkins. Any commits, pull requests, or build alerts can be collaborated on within the platform.
Most companies that handle sensitive code choose Mattermost. Besides, its ‘Playbooks’ feature turns incident response and onboarding into trackable checklists.
Best for: DevOps engineers who prioritize the self-hosting option.
Key Features of Mattermost:
- Advanced channels
- Multi-window support
- 1:1 & group messaging
- Screen sharing
- Integrate AI agents
Mattermost Pricing:
- The professional plan and the enterprise pricing come with a custom quote.
7. Zulip – Topic-Based Chat Software
Zulip messaging platform organizes every conversation into topics within channels. This feature helps teams prevent conversation overlap issues.
The platform integrates with GitHub, Jira, and Sentry tools that enable workflow coordination. One drawback is its mobile app. It lacks some desktop features and experiences occasional notification inconsistencies.
Best for: Distributed teams managing multiple conversations.
Key Features of Zulip:
- Audio and Video Calls
- Rich Content Support
- Guest Account Access
- Emoji & Reaction
- Third-party tool integration
Zulip Pricing:
- The self-hosted plans start at $3.50 per user/month. Enterprise pricing requires contacting their sales team.
8. Pumble – Team Messaging and Collaboration Software
Pumble is a business messaging platform designed for team communication. Organizations looking for a Slack alternative choose Pumble for its ‘unlimited chat history’ feature across all plans.
It features a clean and channel-based chat layout, and teams find it easy to adopt. In short, Pumble organizes discussions through channels and thread features.
Best for: Freelancers who need affordable team communication software.
Key Features of Pumble:
- Unlimited Chat History
- Voice and Video Meetings
- Public and Private Channels
- Threaded Conversations
- File & Link Sharing
Pumble Pricing:
- The Pro plan starts at $2.99 per user/month, and the enterprise plan costs $7.99 per user/month.
9. NuovoTeam – Frontline Workforce Communication Platform
NuovoTeam is a team communication software that enables messaging, voice calls, and location tracking through mobile devices. Businesses use this platform for real-time communication across field employees and supervisors.
It supports workforce monitoring and task execution. The mobile app makes it suitable for logistics, construction, healthcare, and field services. But users report that the platform lacks customization for specific project needs.
Best for: Organizations managing distributed and mobile workforces.
Key Features of NuovoTeam:
- GPS Location Tracking
- Walkie-Talkie
- VoIP & Video Calling
- Media File Sharing
- Attendance Management
NuovoTeam Pricing:
- The business plan costs $5 per user/month.
10. Crisp – Customer Communication Platform
Crisp’s customer communication platform combines team collaboration with support tools. Its ‘shared inbox’ feature allows businesses to handle interactions efficiently.
The platform charges per workspace rather than per agent. This makes it affordable for scaling teams. In short, businesses use Crisp to improve customer support while keeping internal teams aligned with the conversations.
Best for: Businesses to manage customer communication and team collaboration.
Key Features of Crisp:
- Video & audio chat
- Multichannel support
- Help center
- Chatbot AI
- Ticketing system
Crisp Pricing:
- Paid plans start from $45/month per workspace. Enterprise plans come with custom pricing.
How to Choose The Right Self-Hosted Slack Alternative
Organizations should verify the self-hosted platform before investing in it. Below are the key capabilities for self-hosted team communication software.
- On-premises & Cloud Hosting: The solution should have flexible deployment options. This allows companies to control the infrastructure without vendor lock-in.
- Full Data Ownership: It should allow managing your team’s conversation data. The chat solution or any other third party should not claim ownership of the information.
- Custom Team Chat Solution: It should help organizations to build a custom team chat platform based on their unique features and workflows.
- White-labelling Capability: The self-hosted solution should reflect the company’s true identity to ensure brand consistency in the chat app.
- Enterprise-grade Security: The solution should support AES encryption and AI moderation features to protect conversations and enhance trustworthiness.
- 100+ Tool Integrations: It should natively integrate with CRMs, business communication tools, and productivity apps to improve collaboration.
- Technical Documentation: The solution should provide a dedicated doc to integrate the in-app chat API into Android, iOS, or web app platforms.
Conclusion
The future of team communication software is moving towards AI-powered messaging with conversation AI. It would be more about providing an immersive virtual meeting experience. Enterprises that choose the right solution today will gain all these benefits.
And if you’re looking to build this exact team communication platform, contact the experts and get started.