Communication Apps

Team messaging, announcements, email campaigns, and member engagement platforms.

★ 4.5

Slack

Pricing Free–$12.50/user/mo
Best For Team communication

Market leader in team messaging. Integrates with 2000+ apps. Free tier limited to 90 days history. Best for orgs with dedicated staff and budgets.

Pros

  • Excellent integrations (2000+ apps)
  • Powerful search and message history
  • Strong security and compliance

Cons

  • Expensive per-person pricing at scale
  • Free tier severely limited
  • Can get noisy with multiple channels
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★ 4.2

Microsoft Teams

Pricing Free–$6/user/mo
Best For Microsoft ecosystem

Free with Microsoft 365. Strong integration with Office apps. Good video conferencing. Slightly clunkier than Slack but better value if using Office.

Pros

  • Free with Microsoft 365 subscriptions
  • Excellent Office integration
  • Integrated video conferencing

Cons

  • UI can feel cluttered
  • Learning curve for new users
  • Fewer third-party integrations
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★ 4.0

Mattermost

Pricing Free–$99/mo
Best For Self-hosted teams

Open-source Slack alternative. Can be self-hosted for complete control. Good for privacy-conscious orgs. Requires technical setup.

Pros

  • Open-source and customizable
  • Self-hosted option for privacy
  • No per-user pricing

Cons

  • Requires technical setup
  • Fewer integrations than Slack
  • Community support not as responsive
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★ 4.1

Discord

Pricing Free–$10/mo
Best For Communities

Originally for gaming, now popular for community management. Excellent for member engagement and real-time discussion. Good voice/video quality.

Pros

  • Completely free for basic use
  • Excellent voice and video quality
  • Great for community building

Cons

  • Not designed for business communication
  • Can feel informal for professional orgs
  • Limited integration ecosystem
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★ 3.8

Nextdoor

Pricing Free–$300/mo for business
Best For Neighborhood communication

Neighborhood-specific communication platform. Great for HOAs and local community engagement. Free for members, paid for businesses and orgs.

Pros

  • Location-based community focus
  • High member engagement for neighborhoods
  • Verified user network

Cons

  • Limited to neighborhood boundaries
  • Freemium for orgs (paid for features)
  • Less feature-rich than Slack/Teams
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