CRM and sales
Reply.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
espocrm/espocrm★3,198 GitHub starsAGPL-3.0 licenceOpen-source CRM web app for managing contacts, pipelines, emails, and basic campaign workflows.Open on GitHub ↗Dolibarr/dolibarr★7,490 GitHub starsGPL-3.0 licenceERP/CRM web application handling contacts, sales pipelines, email communications, invoicing, and company operations.Open on GitHub ↗
What you give up either way
- Real-time access to Reply’s proprietary 1+ billion contact dataset and intent signals
- Built-in email warmup using Reply’s peer-to-peer warmed inbox network
- Native LinkedIn automation and Chrome extension prospecting features
- Hosted high-volume deliverability infrastructure and paid CSM/onboarding
- Prebuilt AI SDR agent/autopilot managed service
An open-source project doing the core job proves a replacement is possible. It does not prove it matches Reply.io, and it does not prove anyone has run it for a month. How we decide.


