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Pumble alternatives: 6 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave Pumble: far fewer integrations than Slack, and group meetings require a paid plan. We ranked 6 alternatives by how directly each one replaces Pumble, then by reviews, real visits and how recently each app's facts were checked against its own website. Slack currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1Mattermost logoMattermostOpen sourceYesWeb, Windows, macOS +41 of 354.8
2Zulip logoZulipOpen sourceYesWeb, Windows, macOS +42 of 354.0
  1. Mattermost logo

    1. MattermostTop pick

    Best for: Security-conscious organizations that must self-host chat

    Open sourceSelf-hostableWeb, Windows, macOS, Linux, iOS, Android, Self-hosted

    54.8

    score / 100

    Why switch from Pumble

    Self-hostable if you want chat data on your own servers.

    Pros

    • Open source and self-hosted
    • Slack-like interface
    • Strong compliance options

    Cons

    • Self-hosting requires maintenance
    • Smaller integration catalog than Slack
    Visit Mattermost Details and reviews
    How this score is calculated
    Editorial fit ×0.377
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1553
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Mattermost a good Pumble alternative?

    Verified facts

    1 of 3 verified
    Open source
    Yes
    Not checked yetgithub.com(opens source in a new tab)
    Self-hosting
    Yes
    Checked Oct 24, 2026mattermost.com(opens source in a new tab)
    Free edition
    Yes
    Not checked yetmattermost.com(opens source in a new tab)
  2. Zulip logo

    2. Zulip

    Best for: Distributed teams that work asynchronously across time zones

    Open sourceSelf-hostableWeb, Windows, macOS, Linux, iOS, Android, Self-hosted

    54.0

    score / 100

    Why switch from Pumble

    Open source, with topic-based threads for busy teams.

    Pros

    • Topic threads keep chat organized
    • Open source and self-hostable
    • Great for async work

    Cons

    • Topic model takes getting used to
    • Fewer third-party integrations
    Visit Zulip Details and reviews
    How this score is calculated
    Editorial fit ×0.363
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1577
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Zulip a good Pumble alternative?

    Verified facts

    2 of 3 verified
    Open source
    Yes
    Checked Oct 24, 2026github.com(opens source in a new tab)
    Self-hosting
    Yes
    Checked Oct 24, 2026zulip.com(opens source in a new tab)
    Free plan
    Yes
    Not checked yetzulip.com(opens source in a new tab)

The best Pumble alternative for…

The highest-ranked app in this list for each need.

Slack logo

Best Pumble alternative for most people

Slack

The original, with a far larger integration ecosystem.

Mattermost logo

Best Pumble alternative for a free option

Mattermost

Self-hostable if you want chat data on your own servers.

Chanty logo

Best Pumble alternative for a free plan you can upgrade

Chanty

Similar budget chat with a built-in task board.

Zulip logo

Best Pumble alternative for open source

Zulip

Open source, with topic-based threads for busy teams.

Mattermost logo

Best Pumble alternative for self-hosting

Mattermost

Self-hostable if you want chat data on your own servers.

Discord logo

Best Pumble alternative for Mac

Discord

Free voice-first chat if the team is informal or community-based.

Slack logo

Best Pumble alternative for Windows

Slack

The original, with a far larger integration ecosystem.

Slack logo

Best Pumble alternative for Linux

Slack

The original, with a far larger integration ecosystem.

Google Chat logo

Best Pumble alternative for iPhone and Android

Google Chat

Free with Google Workspace if your company already uses it.

Slack logo

Best Pumble alternative for working in the browser

Slack

The original, with a far larger integration ecosystem.

Pumble alternatives: common questions

What is the best alternative to Pumble?

Slack ranks first right now. The original, with a far larger integration ecosystem. Chanty and Google Chat follow it in our ranking.

Is there a free alternative to Pumble?

Yes. Slack (free plan + paid), Chanty (free plan + paid), Google Chat (free plan + paid) and Discord (free plan + paid) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Pumble?

Yes: Mattermost and Zulip. Mattermost and Zulip can also be self-hosted.

Which Pumble alternatives work on Linux?

Slack, Chanty, Discord, Mattermost and Zulip run on Linux.

Why do people switch from Pumble?

The complaints we hear most: far fewer integrations than Slack; group meetings require a paid plan; younger product with fewer advanced workflow features.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Pumble, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.