Apps Like Slack: 12 Team Chat Alternatives That Actually Work
Text
About Slack
Founded
2013
USA
Ships to
Worldwide
Editor-reviewed
Every recommendation read and refined by hand
Honest tradeoffs
Drawbacks listed, not hidden
No paid placements
Brands cannot pay to be ranked
Slack did something genuinely remarkable: it made internal communication feel like a product worth caring about. Channels replaced reply-all chaos, integrations turned the sidebar into a command center, and the little hello sound became a small dopamine hit that signaled work was happening. For a stretch of years, Slack wasn't just an app — it was how a certain kind of company signaled it was modern.
Then the landscape shifted underneath it. Microsoft Teams arrived bundled free with Office 365, and IT departments did the math in about ten seconds. Discord quietly absorbed millions of small teams, communities, and side projects with a free tier that never punished you. Salesforce bought Slack, the 90-day message history cap on the free plan turned the app into a leaky bucket, and per-seat pricing started looking absurd once your headcount crossed thirty. Notification overload became a meme. The product didn't get worse — the competition got dramatically better and dramatically cheaper.
The twelve alternatives below are the brands that actually took over the territory Slack used to define — from Teams' enterprise dominance to Discord's grip on small teams to the open-source platforms now powering everything from startups to defense contractors.
Then the landscape shifted underneath it. Microsoft Teams arrived bundled free with Office 365, and IT departments did the math in about ten seconds. Discord quietly absorbed millions of small teams, communities, and side projects with a free tier that never punished you. Salesforce bought Slack, the 90-day message history cap on the free plan turned the app into a leaky bucket, and per-seat pricing started looking absurd once your headcount crossed thirty. Notification overload became a meme. The product didn't get worse — the competition got dramatically better and dramatically cheaper.
The twelve alternatives below are the brands that actually took over the territory Slack used to define — from Teams' enterprise dominance to Discord's grip on small teams to the open-source platforms now powering everything from startups to defense contractors.
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The 12 Best Alternatives to Slack
1
Microsoft Teams
Est. 2017
Redmond, Washington, USA
$
cheaper
Any team already paying for Microsoft 365 — Teams is effectively free, and the integration with Word, Excel, and Outlook is unmatched.
Carbon Neutral
Channels, DMs, threads, file sharing, app integrations — the full Slack playbook, plus video calls and document collaboration built directly into the same window.
Pros
- Bundled free with Microsoft 365 subscriptions
- Deep Office, SharePoint, and Outlook integration
- Unlimited message history on all paid tiers
- Enterprise-grade security and compliance built in
Cons
- Interface feels heavier and slower than Slack
- Notification settings buried in nested menus
- App ecosystem less polished than Slack's
2
Discord
Est. 2015
San Francisco, California, USA
$
cheaper
Small teams, startups, communities, and side projects that need persistent voice channels and never want to hit a history cap.
Channels, threads, voice rooms, and a free tier with unlimited message history — what Slack's free plan should be in a parallel universe.
Pros
- Genuinely useful free tier with no message history limit
- Always-on voice channels feel like a virtual office
- Massive bot and integration ecosystem
- Fast, modern interface that doesn't feel corporate
Cons
- Gaming aesthetic can feel unprofessional for client-facing work
- Threading model less mature than Slack
- Limited enterprise compliance features
Visit Discord
Full guide: Apps Like Discord
3
Mattermost
Est. 2016
Palo Alto, California, USA
$
cheaper
Security-conscious teams, regulated industries, and engineering orgs that need to own their data and run chat on their own infrastructure.
Open-source, self-hostable Slack clone with channels, threads, integrations, and a UI close enough that the migration friction is near zero.
Pros
- Fully self-hostable with source code available
- Used by defense contractors and Fortune 100s for security
- No per-seat pricing on self-hosted free tier
- Native developer workflow integrations
Cons
- Requires DevOps capacity to self-host well
- Cloud-hosted pricing is comparable to Slack
- App ecosystem narrower than Slack or Teams
4
Rocket.Chat
Est. 2015
Wilmington, Delaware, USA
$
cheaper
Organizations that need on-premise deployment, customer-facing chat, and full data sovereignty in one platform.
Another open-source, self-hostable team chat with channels, threads, omnichannel customer messaging, and a clear ambition to be the Slack you actually own.
Pros
- Free community edition for self-hosters
- Built-in livechat and omnichannel customer support
- Strong privacy and on-premise deployment story
- Active open-source community
Cons
- UI less polished than Slack or Teams
- Self-hosting needs ongoing maintenance
- Mobile apps lag behind desktop in features
5
Google Chat
Est. 2017
Mountain View, California, USA
$
cheaper
Teams already living inside Google Workspace who want chat without paying twice.
Carbon Neutral
Spaces (channels), DMs, threaded conversations, and tight integration with Docs, Sheets, Meet, and Gmail — bundled into Google Workspace.
Pros
- Included with Google Workspace at no extra cost
- Deep Docs and Gmail integration
- Clean, uncluttered interface
- Smart Reply and Gemini AI features built in
Cons
- Smaller third-party app ecosystem
- Threads feel less natural than Slack's
- Less customization for power users
6
Zulip
Est. 2012
San Francisco, California, USA
$
cheaper
Async-first teams, open-source projects, and anyone tired of scrolling through 400 unread channel messages to find context.
Channels and topic-based threading taken to a higher level — every message belongs to a topic, which makes catching up after a week off genuinely possible.
Pros
- Topic-threaded model is genuinely better for async work
- Fully open-source and self-hostable for free
- Free cloud tier for open-source and research orgs
- Fast keyboard-driven navigation
Cons
- Topic model has a learning curve coming from Slack
- Fewer integrations than Slack or Teams
- UI is functional rather than beautiful
7
Element
Est. 2017
London, UK
$
cheaper
Privacy-first teams, governments, journalists, and anyone who needs federation across organizations.
Secure, decentralized team chat built on the Matrix protocol — channels, threads, voice, and video with end-to-end encryption by default.
Pros
- End-to-end encryption on by default
- Decentralized — federate with other Matrix servers
- Used by the French and German governments
- Self-hostable with no per-seat fees
Cons
- Federation concepts confuse non-technical users
- Integrations and bots still maturing
- Mobile experience less polished than Slack
8
Twist
Est. 2017
Remote (Doist)
$
cheaper
Remote, distributed teams across time zones who want to kill the always-on Slack expectation entirely.
Made by the Doist team behind Todoist as a deliberate antidote to Slack — threaded, async-first communication that doesn't expect you to be online.
Pros
- Designed explicitly for async, deep-work cultures
- Threads are first-class — no firehose channel feeds
- Clean, calm interface with minimal notifications
- Affordable per-seat pricing
Cons
- No real-time voice or video built in
- Small app and integration ecosystem
- Wrong fit if your team genuinely needs synchronous chat
9
Chanty
Est. 2017
Cyprus
$
cheaper
Small businesses and startups under fifty people who want Slack's core experience without Slack's bill.
Slack-style channels, DMs, threads, and built-in task management at a fraction of the per-seat price, with unlimited message history even on the free plan.
Pros
- Unlimited message history on free plan up to 10 users
- Built-in Kanban task board
- Simple pricing well below Slack
- Fast, lightweight interface
Cons
- Smaller integration library
- Not ideal for very large enterprise rollouts
- Fewer customization options for power admins
10
Pumble
Est. 2020
Palo Alto, California, USA
$
cheaper
Bootstrapped teams and nonprofits who literally cannot justify Slack's per-seat math.
Free unlimited users, unlimited message history, and a UI that's openly modeled on Slack — built by the CAKE.com team behind Clockify.
Pros
- Genuinely free for unlimited users with full history
- Familiar Slack-like interface — minimal migration friction
- Includes voice and video calls on paid tiers
- No aggressive upsells in the free product
Cons
- Younger product — fewer integrations than Slack
- Occasional rough edges in mobile apps
- Enterprise admin tooling still maturing
11
Flock
Est. 2014
Mumbai, India
$
cheaper
Small to mid-sized teams who want chat plus light project management without stitching together five tools.
Channels, DMs, video calls, shared to-dos, polls, and reminders bundled into one workspace — a Slack-shaped product with productivity tools baked in.
Pros
- Built-in to-dos, polls, reminders, and notes
- Lower per-seat pricing than Slack
- Good video calling included
- Clean interface that doesn't overwhelm new users
Cons
- App ecosystem narrower than Slack
- Less momentum than Teams or Discord
- Fewer power-user features for engineering teams
12
Basecamp
Est. 2004
Chicago, Illinois, USA
$
cheaper
Teams who suspect the real problem isn't Slack's pricing — it's the always-on chat culture itself.
Not a Slack clone — a deliberate rejection of it. Group chat (Campfire), message boards, to-dos, and docs in one flat-priced workspace that refuses the always-on model.
Pros
- Flat $299/month pricing for unlimited users on Pro
- Intentionally async-first philosophy
- Message boards, to-dos, and docs in one place
- Long-tenured, stable, profitable company
Cons
- Chat (Campfire) is intentionally basic
- Wrong tool if you need real-time engineering chat
- Opinionated workflow won't suit every team
Already paying for Microsoft or Google? Stop paying twice
If your team is on Microsoft 365 or Google Workspace, you are already paying for a chat tool. Microsoft Teams is the obvious move for Office-heavy organizations — channels, threads, and unlimited history come bundled at no extra cost. Google Chat does the same job for Workspace teams, with Docs and Gmail integration that Slack can't match. The hardest part is admitting you've been paying twice for years.
Own your data: open-source self-hosted picks
For regulated industries, security-conscious teams, or anyone who wants to never receive a SaaS price-hike email again, Mattermost, Rocket.Chat, Zulip, and Element all offer free self-hosted editions. Mattermost is the cleanest Slack migration. Zulip's topic threading is genuinely better for async work. Element brings end-to-end encryption by default. The trade-off is real: you need DevOps capacity to run them well.
Bootstrapped teams: free tiers that aren't traps
Slack's 90-day message history cap on the free plan is what pushes most small teams to leave. Discord, Pumble, and Chanty all offer genuinely usable free tiers — unlimited history, unlimited users (or generous limits), and no aggressive nag screens. Discord is best if you want persistent voice rooms. Pumble is the closest visual clone of Slack. Chanty adds built-in task management for teams under ten.Which Alternative Is Right for You?
If you're a Microsoft 365 shop, the decision is essentially made for you — Microsoft Teams is free with your subscription and the migration pays for itself in the first month. Google Workspace teams should default to Google Chat for the same reason. If your team is small, scrappy, and tired of hitting Slack's 90-day history wall, Discord and Pumble both offer free tiers that don't punish you for being broke. For engineering-heavy teams who care about owning their data, Mattermost is the most painless Slack migration, while Zulip's topic-threaded model is genuinely a better way to work async once you get used to it. Element is the right call for privacy-first orgs and anyone who needs federation. And if you suspect the real issue isn't Slack's bill but the always-on chat culture it created, Twist and Basecamp are explicit rejections of that model — and worth considering even if they feel unfamiliar at first. Frequently Asked Questions
QIs Microsoft Teams really free if we already have Office 365?
Yes — Microsoft Teams is included with virtually every Microsoft 365 Business and Enterprise plan at no additional per-seat cost. If you're already paying for Office, Excel, and Outlook, you have Teams whether you use it or not. For organizations of more than 20-30 people, the math against Slack's per-seat pricing is brutal.
QWhat's the best free Slack alternative with unlimited message history?
Pumble offers free unlimited users and unlimited message history with a Slack-like interface — the closest direct swap. Discord also has unlimited free history and is excellent for small teams who want persistent voice channels. For self-hosters, Mattermost, Rocket.Chat, and Zulip all have free community editions with no history caps.
QWhich Slack alternative is best for a small startup under 20 people?
Discord and Pumble are the standout picks. Discord's free tier is more generous than anything Slack offers and the voice channels are excellent for remote co-working. Pumble looks and feels almost identical to Slack with no history limit. Chanty is also strong if you want built-in task management.
QAre there any self-hosted, open-source alternatives to Slack?
Yes — Mattermost is the most popular and the easiest Slack migration. Rocket.Chat is a strong alternative with built-in customer-facing chat. Zulip offers a uniquely good threaded model that scales better for async teams. Element, built on the Matrix protocol, is the pick if you need end-to-end encryption and federation.
QHow do I migrate Slack message history to a new platform?
Slack lets workspace admins export channel and message data as JSON (full export on paid plans, channel-only on free). Mattermost, Rocket.Chat, and Pumble all offer official Slack import tools that ingest this export and recreate channels, users, and message history. Direct messages can be trickier — on Slack's free plan, exports only include public channels unless you're on a Business+ plan or have approved a Corporate Export.
Our Verdict
The Best Slack Alternative For You
If you're a Microsoft 365 shop, the decision is essentially made for you — Microsoft Teams is free with your subscription and the migration pays for itself in the first month. Google Workspace teams should default to Google Chat for the same reason. If your team is small, scrappy, and tired of hitting Slack's 90-day history wall, Discord and Pumble both offer free tiers that don't punish you for being broke. For engineering-heavy teams who care about owning their data, Mattermost is the most painless Slack migration, while Zulip's topic-threaded model is genuinely a better way to work async once you get used to it. Element is the right call for privacy-first orgs and anyone who needs federation. And if you suspect the real issue isn't Slack's bill but the always-on chat culture it created, Twist and Basecamp are explicit rejections of that model — and worth considering even if they feel unfamiliar at first.