ConvertKit (Kit) vs HubSpot

Self-host either: open-source alternatives compared.

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

	ConvertKit (Kit)	HubSpot
Category	Creator email marketing	CRM + marketing automation
SaaS pricing anchor	Free up to 10k subscribers; Creator $29/mo; Creator Pro $59/mo (rises with list size)	Free CRM; Marketing Hub Pro starts at $890/mo
Self-host options listed	3	3

Replaces both — 2 shared open-source picks

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

Listmonk knadh/listmonkalivereplaces both

GitHub: ★ 20.1k · last commit today
License: AGPL-3.0
Setup time: 15min docker-compose (Go binary + Postgres)
Monthly cost: $5 VPS for the app; SMTP relay (Amazon SES, Postmark, Resend) is the variable cost — SES at ~$0.10/1000 sends.

Mautic mautic/mauticalivereplaces both

GitHub: ★ 9.65k · last commit 1d ago
License: GPL-3.0
Setup time: 30min docker-compose (PHP + MariaDB + Cron)
Monthly cost: $10/mo VPS; SMTP relay separately.

Picks unique to each

ConvertKit (Kit) only

Keilaalive
AGPL-3.020min docker-compose (Elixir + Postgres)$5 VPS — Elixir is light.

HubSpot only

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

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

FAQ

Which open-source self-host alternatives replace both ConvertKit (Kit) and HubSpot?

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

How many self-host alternatives are listed for ConvertKit (Kit) and HubSpot?

3 for ConvertKit (Kit), 3 for HubSpot.

Are all the self-host alternatives free?

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