Instead of HubSpot

CRM, marketing and support in one platform.

Partly

Each piece has a good open-source answer. The value of HubSpot is that the pieces share a database, and you will be the integration layer.

You lose: One contact record across marketing, sales and support.

Start here

Twenty

AGPL-3.0a weekendactive

CRM only. Marketing and support are separate installs.

github.com/twentyhq/twenty twenty.com

A database, object storage or mail config, plus backups.

Also worth a look

EspoCRMAGPL-3.0an eveningactive
CRM with some marketing. No support desk.
github.com/espocrm/espocrm www.espocrm.com
MauticGPL-3.0a weekendactive
Marketing automation. It wants to be the centre of your stack.
github.com/mautic/mautic www.mautic.org

Facts checked 8 November 2026. Licences, activity and archive status come from each project's own repository; the verdict and the cost lines are the desk's.