App
Best for
Pricing
Blink
Frontline & deskless teams (mobile-first)
From $4.50 / user / month
Slack
Knowledge worker collaboration
From $7.25 / user / month
Microsoft Teams
Microsoft 365 organisations
From $4 / user / month
WhatsApp Business
Small mobile-first teams
Free
Workvivo
Culture & social engagement
Custom (~$20K/yr, 250+ users)
Google Chat
Google Workspace teams
From $7 / user / month