Best Open Source Alternatives to ConvertKit

Compare the best free and open-source alternatives to ConvertKit — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated November 2026 · 5 alternatives

ConvertKit

Proprietary SaaS

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ConvertKit alternatives compared

Open-source alternatives to ConvertKit, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
listmonk	24,124	AGPL-3.0	LinuxmacOSWindowsDocker	Yes	Nov 2026	Visit
Mautic	10,900	GPL-3.0	LinuxmacOSWindowsDocker	Yes	Nov 2026	Visit
Notifuse	2,274	—	DockerLinux	Yes	Nov 2026	Visit
Sendportal	2,188	MIT	LinuxmacOSWindowsDocker	Yes	Oct 2026	Visit
Hyvor Post	34	AGPL-3.0	Web	No	Oct 2026	Visit

Top open-source ConvertKit alternatives

listmonk24,124AGPL-3.0

Self-hosted newsletter and mailing list manager replacing Mailchimp with high-throughput email campaigns, PostgreSQL storage, and zero per-contact fees.

LinuxmacOSWindowsDockerWeb

vs ConvertKit: a free, open-source option you fully control, licensed AGPL-3.0.

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Mautic10,900GPL-3.0

Self-hosted marketing automation platform replacing ActiveCampaign with visual campaign workflows, behavioral lead scoring, and zero per-contact fees.

LinuxmacOSWindowsDockerWeb

vs ConvertKit: a free, open-source option you fully control, licensed GPL-3.0.

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Notifuse2,274

Notifuse is a self-hosted email platform replacing Mailchimp with a visual MJML builder, multi-provider delivery routing, and zero per-contact fees.

DockerLinux

vs ConvertKit: a free, open-source option you fully control.

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Sendportal2,188MIT

Sendportal is a self-hosted email marketing platform that connects to Amazon SES and Postmark to replace Mailchimp without per-subscriber pricing.

LinuxmacOSWindowsDockerWeb

vs ConvertKit: a free, open-source option you fully control, licensed MIT.

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Hyvor Post34AGPL-3.0

Hyvor Post is an open-source newsletter platform with zero tracking pixels, replacing complex marketing suites with privacy-respecting email broadcasts.

Web

vs ConvertKit: a free, open-source option you fully control, licensed AGPL-3.0.

Visit Details

Best Open Source Alternatives to ConvertKit

ConvertKit

ConvertKit alternatives compared

Top open-source ConvertKit alternatives

The modern standard for Protobuf workflows

Mentoring for backend developers. Consulting for startups.