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HubSpot vs Mailchimp

Self-host either: open-source alternatives compared.

HubSpot and Mailchimp both have open-source self-host stand-ins. 2 open-source projects (Mautic, Listmonk) self-host as a replacement for both — listed below alongside the picks unique to each.

HubSpotMailchimp
CategoryCRM + marketing automationEmail marketing / newsletters
SaaS pricing anchorFree CRM; Marketing Hub Pro starts at $890/mo$13-20/mo at small list sizes; scales steeply by contact count
Self-host options listed33

Replaces both — 2 shared open-source picks

These open-source projects appear on both /hubspot/ and /mailchimp/ — picking one solves the migration off either SaaS.

Mauticmautic/mauticalivereplaces both

GitHub
★ 9.65k · last commit 1d ago
License
GPL-3.0
Setup time
20min (PHP + MySQL)
Monthly cost
$10 VPS for low-volume sending; SMTP/SES for actual delivery.

Listmonkknadh/listmonkalivereplaces both

GitHub
★ 20.1k · last commit today
License
AGPL-3.0
Setup time
10min (single Go binary + Postgres)
Monthly cost
$5 VPS for the app; SES/Mailgun for delivery.

Picks unique to each

HubSpot only

  • EspoCRMalive
    GPL-3.015min (PHP + MySQL)$5 VPS for a small team — very efficient PHP app.

Mailchimp only

  • Keilaalive
    AGPL-3.010min docker-compose$5 VPS for the Elixir app + Postgres; SMTP cost is again external.

In a terminal? npx os-alt hubspot or npx os-alt mailchimp prints either side — how the CLI works →

FAQ

Which open-source self-host alternatives replace both HubSpot and Mailchimp?

2 open-source projects appear on both /hubspot/ and /mailchimp/: Mautic, Listmonk.

How many self-host alternatives are listed for HubSpot and Mailchimp?

3 for HubSpot, 3 for Mailchimp.

Are all the self-host alternatives free?

Yes — every listed option is open source. Your cost is the VPS or hardware that runs it.