2 open source alternatives to Kit (ConvertKit)
Creator-focused newsletter platform. Here are the open source projects real teams use instead — ranked by fit, with honest pros and cons for each.
What people don't love about Kit (ConvertKit)
- Tags/segments logic has a learning curve.
- Price scales by subscribers not emails sent.
- Cloud-only.
Current Kit (ConvertKit) pricing (for reference): Free up to 10k subscribers; Creator from $15/month.
Quick comparison
| Alternative | Best for | License | Self-host | Hosted cloud? |
|---|---|---|---|---|
|
Listmonk Self-hosted newsletter and mailing list manager. |
Creators who want simple broadcast newsletters self-hosted. | AGPL-3.0 | ★★☆☆☆ | Self-host only |
|
Mautic Open source marketing automation platform. |
Creators scaling into automations and lead funnels. | GPL-3.0 | ★★★★☆ | Yes |
1. Listmonk — Creators who want simple broadcast newsletters self-hosted.
Self-hosted newsletter and mailing list manager.
Strengths
- Fast Go binary — single executable.
- Clean UI and import/export tools.
- Bring-your-own-SMTP (Amazon SES, Postmark, etc.).
Weaknesses
- No drag-and-drop visual builder.
- Deliverability depends on your SMTP setup.
- Not a visual marketing suite — plain newsletter focus.
Listmonk homepage · Source on GitHub · Kit (ConvertKit) vs Listmonk →
2. Mautic — Creators scaling into automations and lead funnels.
Open source marketing automation platform.
Strengths
- Full marketing automation — campaigns, landing pages, scoring.
- Large ecosystem.
- Strong for B2B lead nurturing.
Weaknesses
- Heavy self-host setup (PHP + queue + cron).
- UI is complex and has a learning curve.
- Smaller company behind — not as polished as Mailchimp.
Mautic homepage · Source on GitHub · Kit (ConvertKit) vs Mautic →
Not what you're looking for?
Browse other tools in Email Marketing & Newsletters, or check out open source projects by category on the full category index.
Other SaaS in Email Marketing & Newsletters
Recommended reading
When self-hosting goes wrong: seven failure modes and how to avoid them
An honest retrospective on the ways self-hosted setups break — not in theory, but in practice — and the small habits that prevent most of them.
Will the open source project you depend on still exist in three years?
Bus factor, maintainer burnout, funding models, and the signals that separate OSS projects that survive from those that quietly decay.
From SaaS to self-hosted: a 30-day migration playbook
A week-by-week plan to move one service off SaaS and onto your own server without breaking your team's workflow.