Team Chat

Alternatives to Slack

Compare healthier or more active tools in the same use case using ToolVitals public evidence.

Why compare

Signals behind this alternatives page

  • Slack currently shows at least one risk or watch signal in ToolVitals data.
  • Useful public signals are available, but not enough for a strong ToolVitals verdict yet.
  • Health score: 66/100.
  • Shipping score: 31/100.
Confidence caveat: Moderate-confidence page: useful public signals are present, but some evidence sources may be missing or stale.

Switching guide

Best alternatives by need

Best overallRocket.Chat

Highest organic ToolVitals fit for this use case.

Healthier optionsRocket.Chat, Mattermost, Element, Fluxer

Stronger current public-health signal than Slack.

Verified open/source-visibleRocket.Chat, Mattermost, Element, Fluxer

Useful when portability and inspectability matter.

Related comparisons

High-intent matchups

Trust note: Sponsors and affiliate links are separate from rankings. ToolVitals does not let monetization change scores, risk labels, organic ordering, or evidence display.

Ranked alternatives

Best-fit team chat options

12 tools
02

Mattermost

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

Active
Health100
Shipping100
Score100
Confidence100
Stars38.6k
ModeSource-visible project
04

Fluxer

A free and open source instant messaging and VoIP platform built for friends, groups, and communities. Self-hosting and more activity in this repository is coming very soon! See the README.

Active
Health93
Shipping95
Score95
Confidence94
Stars9.8k
ModeSource-visible project
07

Cap

Open source Loom alternative. Beautiful, shareable screen recordings.

Active
Health84
Shipping90
Score90
Confidence100
Stars20.4k
ModeSource-visible project
08

Vexa

Open-source meeting transcription API for Google Meet, Microsoft Teams & Zoom. Auto-join bots, real-time WebSocket transcripts, MCP server for AI agents. Self-host or use hosted SaaS.

Active
Health87
Shipping95
Score93
Confidence100
Stars2.6k
ModeSource-visible project
09

Haven Chat

Self-hosted private chat — No cloud, no telemetry, no Big Tech. Discord alternative that runs on your own machine.

Active
Health89
Shipping98
Score92
Confidence88
Stars508
ModeSource-visible project
12

agentgram

Open-source AI agent social network built with Next.js and Supabase.

Active
Health79
Shipping95
Score90
Confidence100
Stars32
ModeSource-visible project