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ALTERNATIVE APPLICATIONS

Slack Alternatives

Should you replace Slack?

Trello is the strongest catalog alternative to evaluate for Slack.

Slack

Current
Hybrid Payg
4.5/5
Annual cost
--
Seats assigned
--

This catalog view compares public market data and does not include organization spend or usage.

Slack alternatives

See how Slack compares to 7 alternative apps you can switch to.

TrelloBest FitPublic pricingAvg. switch cost--Trello transforms Slack's ephemeral conversations into structured boards, sacrificing speed for organization at one-third the cost.
ZulipWorth ConsideringPublic pricingAvg. switch cost--Zulip organizes chaos with topic-based threading at half the price, but lacks Slack's polished enterprise integrations.
MatrixWorth ConsideringPublic pricingAvg. switch cost--Matrix trades Slack's convenience for complete data control: self-host for zero per-seat licensing, but budget 2x the setup time and ongoing DevOps overhead.
ElementWorth ConsideringPublic pricingAvg. switch cost--Secure, self-hosted collaboration with true data ownership, but requires IT investment that SaaS alternatives eliminate.
DiscordWorth ConsideringSeat-basedAvg. switch cost--Discord removes seat costs entirely and delivers superior voice quality, but forces complete abandonment of enterprise security, compliance, and workflow automation.
MattermostWorth ConsideringPublic pricingAvg. switch cost--Only open-source alternative offering total data control with Slack-like UX — lower cost but demands DevOps investment
WireWorth ConsideringPublic pricingAvg. switch cost--Trades Slack's app marketplace for military-grade encryption and EU data sovereignty, eliminating vendor surveillance but throttling automation options.

Trello and Zulip selected for comparison.

Annual costTotal subscription cost for each app, shown for the selected billing period.
Slack

--

Free

Public catalog pricing. Organization spend is not included.

Trello

--

Free

Public catalog pricing estimate.

Zulip

--

Public pricing

Public catalog pricing estimate.

3-Year Net SavingEstimated savings over three years after migration and setup costs.
Slack

$0

No migration in the current app baseline.

Trello

--

After $2,000 estimated migration cost.

Zulip

--

Team Fit ScoreHow closely the app matches the teams, workflows, and usage patterns currently in place.
Slack

--

Trello

55/100

Creative and marketing teams thrive with Trello's intuitive Kanban boards for campaign tracking and content calendars. However, teams dependent on instant messaging and daily standup calls will find Trello's asynchronous card-based system frustratingly slow. Engineering teams typically require both tools, not a replacement.

Zulip

78/100

Engineering and research teams adopt Zulip rapidly for its topic-based threading and Markdown support, while sales and marketing groups often struggle with the learning curve versus Slack's simpler channel model. Academic institutions particularly value the LaTeX rendering and advanced search capabilities.

Adoption RiskExpected friction, training effort, and behavior change needed to move teams onto the alternative.
Slack

--

Public adoption signal for the current app.

Trello

low

Trello is a medium-complexity migration. Estimated 3 weeks and $2,000 one-time cost.

Zulip

low

Zulip is a high-complexity migration.

User satisfactionAvailable rating and review signal for team sentiment around the app.
Slack

4.5/5.0

55000 reviews

Trello

4.4/5.0

35100 reviews

Zulip

--

850 reviews

Timeline & DisruptionExpected migration duration and disruption to normal workflows.
Slack

No migration needed

Trello

3 weeks

Medium

Trello is a medium-complexity migration. Estimated 3 weeks and $2,000 one-time cost.

Zulip

--

High

Zulip is a high-complexity migration.

Setup & trainingOne-time implementation, enablement, and training investment required.
Slack

--

Trello

$2,000

Estimated one-time migration and setup effort.

Zulip

--

Estimated one-time migration and setup effort.

Integration CoverageHow much of the current integration and workflow surface is covered by the app.
Slack

100%

Supports 2,600 native integrations.

Trello

10%

Supports 250 native integrations.

Zulip

7%

Supports 180 native integrations.

Feature Match (%)How closely the app matches current feature needs, including notable gaps or risks.
Slack

100%

Trello

50%

  • No real-time chat channels or threaded messaging
  • No voice/video huddles or screen sharing
  • No Slack Connect for external guest access
  • No persistent conversation search across messages
  • No instant presence indicators or status updates
Zulip

50%

  • No native video huddles or voice channels
  • Smaller third-party app marketplace than Slack
  • Topic threading learning curve for non-technical staff
  • Lacks native workflow automation builder
  • No equivalent to Slack Connect for external collaboration
CertificationsSecurity, privacy, and compliance certifications available for each app.
Slack
SOC 2 Type IIISO 27001ISO 27017ISO 27018GDPRHIPAAFedRAMP ModerateCCPA
Trello
SOC 2ISO 27001GDPR
Zulip
SOC 2 Type IIGDPR
Choose This IfThe conditions where keeping or switching to this app is likely to make sense.
Slack

You already standardize on this app.

Trello

Your primary need is visual project tracking rather than team conversation

Zulip

Your technical team needs topic-based threading and prefers open-source software

Avoid This IfThe conditions where this app is likely to create cost, workflow, or adoption risk.
Slack

Public pricing or fit signals no longer match your needs.

Trello

Your team coordinates through instant messaging and daily synchronous communication

Zulip

Your organization depends on Slack's app ecosystem and frequent video huddles