CRM and sales
Customer.io alternatives
2 open-source projects that already do this job. Free to use - not free to run, which is what the numbers on the right are for.
The projects
frappe/crm★3,194 GitHub starsAGPL-3.0 licenceFull-featured open-source CRM with contacts, campaigns, and built-in email capabilities.Open on GitHub ↗krayin/laravel-crm★23,640 GitHub starsMIT licenceLaravel-based CRM providing contact management, pipelines, and email/campaign features.Open on GitHub ↗
What you give up either way
- Visual drag-and-drop workflow builder and multi-channel orchestration (push, SMS, WhatsApp, in-app)
- Managed deliverability, dedicated IP provisioning and warming
- AI Agent low-code campaign generation and persistent agent memory
- Enterprise support, onboarding, and compliance options (HIPAA / dedicated hardware)
- Built-in analytics dashboards, A/B & multivariate testing, and data warehouse / reverse-ETL integrations
An open-source project doing the core job proves a replacement is possible. It does not prove it matches Customer.io, and it does not prove anyone has run it for a month. How we decide.