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Open Source Internal Communications Software (2026)
Last updated: March 2026
12 software options
Sponsored
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Enhance employee management with the only all-in-one app
Basic - from $29/month (billed annually) or $35/month (billed monthly) Advanced - from $49/month (billed annually) or $59/month (billed monthly) Expert - from $99/month (billed annually) or $119/month (billed monthly)
Read more about Connecteam
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
A simple and secure way to connect your organization.
Standard: $0 USD (free) Advanced: $4 USD per person / month Enterprise: $8 USD per person / month Free for non-profits and educational institutions
Read more about Workplace from Meta
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Open source team chat software
Zulip is 100% free and open source, with no proprietary version. Self-host without paying a dime, or contact us to inquire about enterprise support options. We offer free Zulip Cloud hosting with up to 10,000 messages of search history. For unlimited history and other premium features, sign up for Zulip Cloud Standard for $6.67/user/month. Sponsorships and special education pricing are available. Zulip sponsors free Zulip Cloud Standard for hundreds of worthy organizations.
Read more about Zulip
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Open source workplace messaging for web, PCs & phones
Team edition: $0 free forever Enterprise E10: $3.25 user/month billed annually Enterprise E20: $8.50/user/month
Read more about Mattermost
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Digital Workplace Software
eXo Platform Enterprise Edition plans: Professional: $5 / user / month (Starting at 100 users) Enterprise: $6 / user / month (Starting at 300 users) Ultimate: $6 / user / month (Starting at 600 users)
Read more about eXo Platform
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-based software for team collaboration & communication
Zoho Cliq offers three paid plans - Standard, Professional, and Enterprise. A free plan is also available.
Read more about Zoho Cliq
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-based ERP solution for small to midsize businesses
Community plan: free Pro: 35€/month/user Entreprise Pro: Discuss your project Contact Axelor for more information.
Read more about Axelor
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Streamlining team management strategically.
Read more about Rolebase
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Powering Any Video Experience
Kaltura offers several pricing plans to fit your needs. Start your subscription with a free trial or ask for a personalized demo, depending on the solution.
Read more about Kaltura Video Platform
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Messaging, voice, directory & analytics software for finance
Read more about Symphony Communication
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Secure and privacy-compliant business messenger
Read more about Threema Work
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Unified communications and contact center platform
Please contact HiperPBX directly for pricing details.
Read more about HiperMe!