Slack alternatives in 2026: an honest comparison for small teams

Most "best Slack alternatives" lists are affiliate pages that rank whichever tool pays best. This one is written by a team that builds one of the alternatives, which is a bias worth stating up front. So here is the deal: every tool below gets its real strengths and its real problems, TeamLayer included, and the last section is about when you should ignore all of this and stay on Slack.

Prices are list prices in USD checked in August 2026 and change often.

Why teams look in the first place

Three reasons come up again and again, and they lead to different answers:

1. Cost. Per-seat billing that grows with every hire, usually alongside a second per-seat bill for a task tracker.
2. The free plan's limits. 90 days of visible history, and permanent deletion of anything older than a year.
3. Data control. A requirement to self-host, or to keep data in a specific country.

If your reason is data control, jump to Mattermost or Rocket.Chat. If it is cost, keep reading, because the cheapest chat tool is often not the cheapest answer.

The alternatives

Mattermost

Open source, self-hosted, the standard answer for teams with a compliance or sovereignty requirement. Free if you run it yourself, paid tiers for enterprise features and support.

Good at: total data control, on-premise, a genuinely mature product with a large deployment base. Costs you: a server, upgrades, backups and someone whose job includes all three. "Free" is a licence, not an operating cost. Right for: regulated industries, public sector, teams that already run their own infrastructure.

Rocket.Chat

The other big open-source option, broader in scope than Mattermost: chat, plus omnichannel customer conversations, plus a marketplace. Self-hosted or cloud.

Good at: breadth of features, customer-facing chat in the same tool, self-hosting. Costs you: the breadth shows up as complexity, and the self-hosted operating burden is the same as Mattermost's. Right for: teams that want internal chat and customer chat in one system.

Zulip

Threaded by design. Every message belongs to a topic inside a channel, which makes catching up after a day away genuinely fast. Open source, free cloud tier for open-source projects.

Good at: asynchronous work across time zones, high-volume discussion that stays readable. Costs you: the topic model takes a couple of weeks to click, and people who like Slack's flow often resist it. Right for: distributed teams and open-source communities.

Microsoft Teams

Effectively free if you already pay for Microsoft 365, which is why it has the install base it does.

Good at: price, if the licence is already bought. Deep Office integration, meetings and calling. Costs you: a heavier client, a busier interface, and a chat model that many teams find worse than Slack's. Right for: organisations already standardised on Microsoft 365.

Google Chat

The same logic in the Google ecosystem: included with Workspace, integrated with Docs and Meet.

Good at: zero marginal cost on Workspace, decent Docs integration. Costs you: the weakest of the major chat products on its own terms; integrations and search lag behind. Right for: small teams on Workspace who want chat to be a feature, not a product.

Discord

Free, excellent voice, huge communities. Used by more startups than admit it.

Good at: voice channels that people actually stay in, zero cost, fast onboarding. Costs you: it is built for communities, not companies. Weak admin controls, no business support commitment, and a consumer feel that some clients notice. Right for: early-stage teams, communities, game and creative studios.

Chanty and Pumble

Two budget-focused Slack-shaped tools. Pumble's pitch is unlimited message history on the free tier, which directly targets Slack's biggest free-plan weakness. Chanty bundles a light task view.

Good at: low price per user, familiar interface, little retraining. Costs you: smaller ecosystems, thinner integration catalogues, and you are still paying per user. Right for: teams that want Slack's shape at a lower rate and nothing structurally different.

Element (Matrix)

Federated, end-to-end encrypted, open protocol. The privacy-first answer.

Good at: encryption, federation, no vendor lock-in on the protocol level. Costs you: rough edges in daily use, and administration is real work. Right for: privacy-critical teams and organisations that need to federate with others.

TeamLayer (ours)

Chat and work tracking in one app: channels, DMs, threads, mentions, reactions, voice and video, plus tasks, subtasks, sprints, kanban and a calendar. Priced flat per team, on your own subdomain, with a separate database per team.

Good at: removing the second subscription and the second search box. $25 a month up to 10 people, $50 up to 20, then $2.50 per extra person with every 15th free. A task keeps the discussion that produced it. Costs you: no marketplace with thousands of apps, a younger product than Slack, and if you need twenty integrations we are the wrong answer. Right for: teams of 5 to 50 who run chat plus a tracker and would rather run one tool.

The prices side by side

For a ten-person team, per month, at list prices:

The row that matters is the second one. Comparing chat tools to chat tools hides the fact that most teams are paying two subscriptions, and the second one is usually the more expensive.

When you should stay on Slack

Genuinely, in these cases:

• You depend on the app directory. If ten integrations drive your workflow, no alternative will match them and migration will hurt more than the bill.
• You are on Enterprise+ with compliance obligations. Key management, HIPAA support and multi-workspace administration are not commodity features.
• Slack Connect is how you work with clients. Shared channels with external organisations are Slack's strongest lock-in, and it is a real one.
• Your team is happy and the bill is affordable. Migrating chat is a two-week disruption. Do not spend it to save $40 a month.

If you do move, move deliberately

Three things save teams the most pain:

1. Export first. On Slack's free plan you can export public channel history; DMs and private channels need a paid plan and, depending on the export type, Slack's approval. Do this before any deletion date, not after.
2. Move one team, not the company. Run the new tool with a single team for two weeks. Chat habits are the thing that decides adoption, and you cannot predict them from a demo.
3. Decide what happens to the archive. Keeping the old workspace read-only for a quarter costs nothing on the free plan and removes most of the anxiety.

If your reason for looking is the free plan's deletion policy, read what Slack's one-year deletion email actually means before you do anything else - the date in that email is specific to your workspace.

FAQ

What is the best free alternative to Slack?

Discord for teams that can live with a consumer product, Mattermost if you can host it yourself, and Google Chat or Microsoft Teams if you already pay for Workspace or Microsoft 365.

Is there a Slack alternative that includes task management?

TeamLayer includes tasks, sprints and a kanban board in the same app as chat. Chanty offers a lighter task view. Most other chat tools expect you to buy a tracker separately.

What is the cheapest Slack alternative for a team of 10?

Free options are Discord and self-hosted Mattermost, where the cost is server plus administration. Among paid tools, TeamLayer at $25 a month flat for the team is cheaper than any per-seat chat plan at that headcount, and it removes the tracker subscription as well.

Can I move my Slack history to another tool?

You can export it. On the free plan the export covers public channels; private channels and DMs require a paid plan and, for some export types, Slack's approval. Import support varies by destination, so check it before you commit to a date.

Is self-hosting Slack possible?

No. Slack is cloud only. If you need self-hosting, the realistic options are Mattermost, Rocket.Chat, Zulip or Element.