Open source alternatives to Klaviyo

1 open source project replaces Klaviyo, ranked by how safe each is to depend on.

Mautic

87 · Healthy

Marketing automation platform with campaigns, segments, landing pages and lead scoring.

GPL-3.0-or-later★ 11kLast commit today

Source-available and unverified licenses

The code for these is public, but the license is not an OSI open source license, or we have not verified it yet. Check the license notes on each project before relying on it.

Notifuse

68 · Stable

Newsletter, email marketing and transactional email platform with a visual MJML editor and several sending providers.

Free core, paid extrasBusiness Source License 1.1★ 2.2kLast commit 22 days ago

Mautic

87 · Healthy

At a glance

Health and license are separate verdicts: a project can be well maintained and still not be open source.

Project	Health	License	Stars	Last commit
Mautic	87 · Healthy	Free, share changesGPL-3.0-or-later	11k	today
Notifuse	68 · Stable	Free core, paid extrasBusiness Source License 1.1	2.2k	22 days ago

More in Email marketing

Klaviyo is a paid email marketing product. See all open source email marketing tools, ranked the same way.

Scores last refreshed from GitHub on 9 October 2026. How we score.