Slack is a widely used team communication platform, but it isn’t the only option, particularly for teams already committed to a different software ecosystem. Here are established alternatives worth knowing about, and what genuinely differentiates each one.
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Microsoft Teams
Microsoft Teams is bundled with Microsoft 365 subscriptions, making it the default choice for organizations already using Word, Excel, and Outlook. It combines chat, video calls, and file collaboration tied directly into the Microsoft 365 ecosystem, which is its biggest practical advantage over Slack for Microsoft-centric organizations — teams not already on Microsoft 365 generally see less benefit from that integration.
Google Chat
Google Chat is bundled with Google Workspace, playing a similar role to Teams for organizations built around Gmail, Google Docs, and Google Calendar. It offers simpler, more lightweight messaging than Slack’s more feature-dense interface, which appeals to teams that want basic chat without extensive third-party app integrations.
Discord
Discord originated in gaming communities but has been increasingly adopted by some businesses, communities, and creator teams for its voice-channel-first design and free-to-use core functionality. It generally feels less oriented toward traditional business workflows (like structured file search or enterprise admin controls) than Slack, but its always-on voice channels and community-oriented features suit certain informal or community-driven teams well.
How to Decide
- Already using Microsoft 365 for email and documents? Microsoft Teams offers the tightest integration.
- Already using Google Workspace? Google Chat offers a simpler, more lightweight option in the same ecosystem.
- Running a community, creator team, or informal group that values always-on voice channels? Discord may fit better than a traditional business chat tool.
- Want the most third-party app integrations and the most established business-chat feature set? Slack remains a strong default choice.
Related Tool
See the full Slack profile for its own features, pricing, and pros/cons.
FAQ
Is there a free alternative to Slack?
Yes. Discord’s core functionality is free, and both Microsoft Teams and Google Chat are included at no extra cost within their respective Microsoft 365 and Google Workspace subscriptions.
Which alternative is best for a business already using Microsoft 365?
Microsoft Teams is the natural choice for organizations already using Microsoft 365, since it’s included and integrates directly with Word, Excel, and Outlook.
Is Discord suitable for a professional business team?
It depends on the team. Discord suits community-driven or informal teams well, particularly those that value voice channels, but it generally offers fewer traditional business-oriented admin and search features than Slack.
Are other communication tools profiled on this site?
Not currently. Slack is the only team communication tool profiled on this site at this time.
Why Consider Switching Away From Slack
Teams typically evaluate alternatives to Slack for a few recurring reasons: already paying for Microsoft 365 or Google Workspace and wanting to avoid a separate chat subscription, wanting a more lightweight tool without Slack’s extensive (and sometimes overwhelming) third-party app ecosystem, or running a community or creator-oriented group where Discord’s voice-first, always-on channel structure fits better than a traditional business chat tool.
Migration Considerations
Switching chat platforms means exporting message history where possible (Slack supports data export on paid plans), reconnecting any integrated tools and bots individually in the new platform, and re-training a team on a new interface, which is often the biggest practical cost of switching even when the new tool is objectively simpler. Running the new tool alongside Slack for a trial period with one team is generally safer than switching everyone at once.
If your team is also comparing broader project and task management platforms rather than just chat, our Asana vs Trello vs ClickUp comparison covers three of the most popular options.