head to head · open source
Listmonk vs warmbly
Listmonk has 24,124 GitHub stars, 2,742 forks, 111 open issues and last shipped yesterday. warmbly has 866 stars, 159 forks, 17 open issues and last shipped yesterday. Listmonk leads on adoption by 2,686% (24,124 vs 866 stars). Listmonk is written in Go under AGPL-3.0; warmbly is written in Go under Apache-2.0. Listmonk has attracted 11% as many forks as stars, warmbly 18%. warmbly was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (email-marketing), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Listmonk | warmbly | |
|---|---|---|
| GitHub stars | ★ 24K | ★ 866 |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | Go | Go |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.7K | ⑂ 159 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Listmonk if
- You weight community size — 24K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick warmbly if
- You want the warmbly feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and warmbly fits your workflow better
About Listmonk
listmonk is a standalone, self hosted, newsletter and mailing list manager. It is fast, feature rich, and packed into a single binary. It uses a PostgreSQL database as its data store. Visit listmonk.app for more info. Check out the live demo . Installation Docker The latest image is available on DockerHub at listmonk/listmonk:latest . Download and use the sample docker compose.yml. Visit See installation docs Binary Download the latest release and extract the listmonk binary. ./listmonk new config to generate config.toml. Edit it. ./listmonk install to setup the Postgres DB (or upgrade to upgrade an existing DB…
read the full Listmonk overview →
About warmbly
The open source agentic cold email and warmup platform. Features · How it works · Quick start · Self hosting · Docs · Community · Support ⭐ Help us reach more senders and grow the Warmbly community. Star this repo! Warmbly Warmbly runs cold email campaigns from the mailboxes you already own and warms them so they keep landing in the inbox. Opens, clicks, and replies land in a shared dashboard the moment they happen, and it's AI native, so your team and its agents work in it together, live. Features Campaigns multi step sequences with per mailbox caps and spacing Unified inbox every mailbox and reply in one place…
read the full warmbly overview →
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Frequently asked questions
Is Listmonk or warmbly more popular?
Listmonk has 24,124 GitHub stars and warmbly has 866. Listmonk has the larger community by that measure.
Are Listmonk and warmbly free?
Both are open source. Listmonk is licensed under AGPL-3.0 and warmbly under Apache-2.0. Neither carries a licence fee.
What is the difference between Listmonk and warmbly?
Listmonk is written in Go and warmbly in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Listmonk or warmbly?
Choose Listmonk if you want the larger community (24,124 stars) or its AGPL-3.0 licence terms. Choose warmbly if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.