Free Team Chat Apps Guide: Message History, Integrations, Self-Hosting, and Plan Limits for 2026

Team chat is the nervous system of a modern company, and in 2026 you do not need a budget to get a good one. Nearly every major platform offers a free tier, and several open-source options are free to run forever if you can host them yourself. The differences come down to message history, integrations, video, and how much control you want over your data.

Below are the eight free team chat apps small businesses and remote teams actually use this year, with current free-plan limits and the trade-off that matters for each. Pricing is in USD and changes regularly, so verify on each vendor’s site before committing.

How we picked them

We weighed five things: how usable the free plan is for a real team (not just a demo), message history retention, the strength of the integration ecosystem, built-in voice and video, and whether self-hosting is possible for teams that need data control. We favored tools a small team can adopt today without immediately hitting a paywall on something essential.

What changed in 2026

The big story is still Slack’s 90-day free history cap, which has driven a steady migration toward alternatives that do not delete your conversations. Pumble in particular has grown by offering unlimited users and unlimited history for free. Meanwhile, Microsoft Teams and Google Chat have tightened their integration with their respective productivity suites, so the “free” choice increasingly depends on whether you already pay for Microsoft 365 or Google Workspace. Open-source options have also matured, with Mattermost and Rocket.Chat now offering polished self-hosted experiences comparable to Slack.

The 8 best free team chat apps in 2026

1. Slack

Best default for most business teams.

Slack remains the most polished and widely supported team chat app, with the deepest integration marketplace and the smoothest workflow tooling. The free plan supports unlimited users and 1-on-1 calls but caps message history at 90 days, which is its main weakness. Paid plans start around $7.25 to $8.75 per user per month. Best for teams that want the standard everyone already knows and a huge app ecosystem.

2. Microsoft Teams

Best free chat for Microsoft 365 users.

Teams offers a free tier with chat, file sharing, and group video calling, and it is the obvious pick if your organization already uses Microsoft 365 because it is bundled in. The free standalone version covers core messaging and meetings. Paid plans arrive through Microsoft 365 Business subscriptions. Best for teams living in Outlook, Office, and SharePoint who want chat in the same place.

3. Google Chat

Best free chat for Google Workspace users.

Google Chat is included with Google Workspace and available in a basic free form with a personal Google account. Its strength is tight integration with Gmail, Drive, and Meet, plus Spaces for organized topic-based collaboration. Paid access comes via Workspace plans. Best for teams already on Gmail and Drive who want messaging next to their docs.

4. Discord

Best free chat for community-style teams.

Discord was built for communities but works well for informal teams, creators, and open projects. The free plan offers unlimited users, unlimited message history, and strong always-on voice channels. Nitro is a personal upgrade around $9.99 per month rather than a per-seat business cost. Best for community-driven teams who value voice and a relaxed structure over enterprise polish.

5. Pumble

Best free plan with unlimited history.

Pumble is the standout free alternative for teams frustrated by Slack’s 90-day cap. Its free plan offers unlimited users and unlimited message history, plus unlimited search, channels, and one-on-one calls. The interface deliberately mirrors Slack, so switching is painless. Paid plans start low, around $2.49 per user per month. Best for budget teams who want Slack-like chat without losing their message archive.

6. Mattermost

Best free self-hosted chat for technical teams.

Mattermost is an open-source platform you can self-host for free, giving you complete control over your data inside your own infrastructure. It is popular with engineering and security-conscious teams, with strong DevOps integrations and a Slack-like feel. A managed cloud option and paid enterprise tiers exist. Best for technical teams that need data sovereignty and are comfortable running their own server.

7. Rocket.Chat

Best free open-source all-in-one comms.

Rocket.Chat is open source and free to self-host, bundling messaging, voice, video, and even external-stakeholder collaboration into one platform. It is highly customizable and used in regulated and mission-critical settings. Cloud and enterprise plans are available if you do not want to host it. Best for teams that want an open, customizable hub and can manage hosting.

8. Element

Best free chat for privacy and decentralization.

Element is built on the open Matrix protocol, offering end-to-end encryption and decentralized, federated messaging. It can be self-hosted for free and is favored by privacy-focused organizations and the public sector. A hosted service and paid plans exist. Best for teams where encryption, federation, and data ownership are non-negotiable.

Quick comparison table

How to choose

Three filters narrow this fast. If you want the standard with the most integrations, start with Slack and accept the 90-day history limit (or jump to Pumble if losing history bothers you). If you already pay for Microsoft 365 or Google Workspace, the bundled chat (Teams or Google Chat) is effectively free and keeps everything in one place.

If data control is the priority, the open-source trio (Mattermost, Rocket.Chat, Element) is free to self-host but needs someone comfortable running a server. For most small teams, the realistic free choice is Slack or Pumble for general work, with Discord reserved for community or creator setups. Decide based on history retention and integrations first, since those are the limits you will feel every day.

Pairing team chat with customer communication

Internal chat keeps your team aligned, but it does not reach your customers. The other half of a healthy comms stack is how you talk to the people who buy from you, and that is a separate problem from team messaging.

Tajo handles the customer-facing side. Built on Brevo and integrated with Shopify, Tajo gives you a unified customer view (contacts, products, orders, and events synced in real time) and AI agents that act across email, SMS, and WhatsApp. So while your team coordinates in Slack or Pumble, Tajo runs the welcome series, the abandoned-cart recovery, and the loyalty offers in the background, automatically and based on real purchase behavior.

The two layers complement each other: a free chat app for your team, and Tajo for turning customer data into multi-channel campaigns that actually drive repeat revenue.

Frequently asked questions

What are the 8 best free team chat apps? The strongest free team chat apps in 2026 are Slack, Microsoft Teams, Google Chat, Discord, Pumble, Mattermost, Rocket.Chat, and Element. Slack is the default for most businesses, while Pumble stands out for offering unlimited message history on its free plan.

Are there free team chat apps available? Yes. Slack, Microsoft Teams, Google Chat, and Discord all offer capable free tiers, and Pumble offers unlimited users and unlimited message history for free. Mattermost, Rocket.Chat, and Element are open source and free to self-host.

How do I choose the right free team chat app? Match the free plan to your needs: Slack and Teams suit most office workflows, Pumble fixes Slack’s 90-day history limit, Discord works for community-style teams, and Mattermost, Rocket.Chat, or Element are best if you need self-hosting and full data control.

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