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+ Open source

+ Can run on-premise

+ Turkish interface

+ Public pricing

+ Only one here with Zapier integration

+ Public pricing

+ Deloitte alliance partner

+ Vendor is publicly listed — audited financial disclosure

+ Only one here with File versioning

+ Turkish interface

+ Public pricing

+ Vendor is publicly listed — audited financial disclosure

+ Lowest starting price here ($4 / user/month)

+ Only one here with Omnichannel

+ Open source

+ Can run on-premise

+ Turkish interface

− Lacks SOC 2, ISO 27001, HIPAA +2 more — offered by others here

− No public adoption figures

− Highest starting price here ($10 / user/month)

− Lacks Turkish interface, Self-hosted, Open source — offered by others here

− Cloud only

− No Turkish interface

− No public adoption figures

− Lacks Self-hosted, Open source — offered by others here

− Cloud only

− Lacks Workflow automation, AI features, Screen sharing +5 more — offered by others here

− Pricing only on request

− No public adoption figures

− Narrowest feature scope (15)

− Smallest vendor (150 employees) — check support capacity

+ Self-hosting gives full control over data

+ Open source and extensible

+ Suited to regulated and security-sensitive teams

+ Intuitive channel-based messaging

+ Huge ecosystem of integrations and bots

+ Strong search and workflow automation

+ Deep integration with Microsoft 365 apps

+ Chat, meetings and file collaboration in one place

+ Often included in existing Microsoft licenses

+ Open source and self-hostable

+ Highly customizable and white-label options

+ Omnichannel features for customer messaging

− Self-hosting requires operational effort

− Smaller integration ecosystem than Slack

− Some enterprise features are paid only

− Free plan has limited message history

− Can become noisy and distracting

− Per-user cost adds up for large teams

− Interface can feel cluttered

− Can be resource-heavy on desktop

− Less appealing outside the Microsoft ecosystem

− Self-hosted setup and upgrades take effort

− User experience less polished than leading SaaS tools

− Advanced features require paid editions