Slack Alternatives in 2026: 9 Apps Compared

Microsoft Teams is the default Slack alternative for any company already paying for Microsoft 365. Chat, video meetings, file sharing and Office documents sit in one app, and Teams Essentials costs $4 per user per month for businesses that only need the basics. A free tier covers personal and small team use.

The trade off is weight. Teams feels heavier than Slack, especially on older hardware, and its channel and search design takes longer to learn. If your company already runs Outlook, SharePoint and OneDrive, those costs are sunk anyway, and Teams removes the need for a separate chat bill.

Google Chat is the quiet Slack alternative for Google Workspace teams. It comes with Workspace plans starting at $7 per user per month, connects directly to Gmail, Drive and Calendar, and covers channels, direct messages and spaces for projects. Setup is minimal, since most teams already have Google accounts.

The limit is depth. Google Chat has fewer integrations and automation options than Slack, and its threading and search are simpler. For a team that already lives in Google Workspace and wants chat without a second subscription, that simplicity is enough. For a team that needs deep integrations, look at Mattermost or Zulip instead.

Discord started for gamers, but its voice channels and free unlimited history make it a real option for creative teams and communities. Servers organize into text and voice channels, bots automate welcome messages and moderation, and Nitro at $9.99 per month adds larger uploads and video quality for individual users.

The business gaps are real. Discord lacks the admin controls, compliance tools and enterprise support that regulated companies need, and its interface can feel casual for client facing work. For a community, a creator team or a startup that lives on voice, Discord is free and hard to beat. For a corporate rollout, pick Teams or Mattermost.

Mattermost is the self-hosted Slack alternative most often chosen by security conscious teams. It is open source, runs on your own servers, and looks close enough to Slack that staff adapt quickly. Paid plans start from about $10 per user per month for enterprise features, while the open source version is free at any size.

The cost is operational, not financial. Your team handles hosting, updates, backups and scaling, which needs IT time that a cloud tool would cover. For regulated industries, defense, healthcare and government teams, that control is the point, and Mattermost is built for it.

Rocket.Chat offers more flexibility than most open source chat tools. It supports self-hosting and cloud plans, connects to external channels such as WhatsApp and Telegram for customer messaging, and includes federation for talking across servers. The community edition is free, with paid tiers for enterprise features.

The interface is less polished than Slack or Teams, and larger deployments need technical care. For a team that wants open source chat plus customer messaging in one system, Rocket.Chat covers more ground than Mattermost. For pure internal chat, Mattermost feels simpler.

Zulip solves a specific Slack pain, which is losing track of conversations in busy channels. Every message belongs to a topic inside a stream, so a channel with ten discussions stays readable instead of turning into one long scroll. Cloud Standard costs $8 per user per month, or $6.67 on annual billing, while the self-hosted version is free.

The learning curve is the catch. Staff used to Slack channels need a week to adopt topics, and the free cloud plan limits searchable history to 10,000 messages. Teams that stick with it often find Zulip the calmest chat tool here, especially for engineering and support teams with long running threads.

Pumble is the best free Slack alternative for a small team that cannot afford paid Slack. Its free plan includes unlimited users and unlimited message history, which directly fixes the two limits that push teams off free Slack. Paid Pro starts at $2.99 per user per month on annual billing, adding guest access and more storage.

The catalog of integrations is smaller than Slack, and advanced admin features are thinner on the free plan. For a small business that mainly needs channels, direct messages and searchable history, Pumble covers the core job at no cost, which is a strong offer.

Twist, from the makers of Todoist, is built for teams that want less real-time pressure. Conversations are organized into threads by topic, there is no green dot culture of instant replies, and the design pushes staff toward thoughtful messages rather than constant chat. The Unlimited plan costs $6 per user per month, with a free plan for trying it.

The trade off is speed. Twist is a poor fit for support teams or operations that need instant answers, and its free plan keeps only one month of history. Remote teams spread across time zones, where async work is already the norm, will find Twist calmer than Slack.

Zoho Cliq is the cheapest paid team chat here, with a free plan covering unlimited history and paid plans from about $3 per user per month. It integrates tightly with Zoho Projects, Zoho People, Zoho Calendar and other Zoho apps, which makes it a natural pick for companies already on Zoho.

Outside the Zoho ecosystem, its appeal narrows. Third-party integrations are fewer than Slack, and the interface is functional rather than standout. For a Zoho shop or a budget conscious small business, Cliq gives you solid team chat for very little money.