head to head · open source
Listmonk vs delta
Listmonk has 23,471 GitHub stars, 2,604 forks, 111 open issues and last shipped 5 days ago. delta has 8,999 stars, 2,176 forks, 955 open issues and last shipped yesterday. Listmonk leads on adoption by 161% (23,471 vs 8,999 stars). Listmonk is written in Go under AGPL-3.0; delta is written in Scala under Apache-2.0. Listmonk has attracted 11% as many forks as stars, delta 24%. delta was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 8884 open source comparisons
Side by side
| Listmonk | delta | |
|---|---|---|
| GitHub stars | ★ 23K | ★ 9.0K |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | Go | Scala |
| Last push | 2026-09-13 | 2026-09-17 |
| Forks | ⑂ 2.6K | ⑂ 2.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Listmonk if
- You weight community size — 23K 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 delta if
- You want the delta feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Scala
- You evaluated both and delta fits your workflow better
About Listmonk
Listmonk is a standalone, self hosted newsletter and mailing list manager in the open source business software and marketing customer engagement ecosystem. It packages campaign management, subscriber management, and email delivery controls into a single binary application with a modern dashboard, and it uses PostgreSQL as its data store.
read the full Listmonk overview →
About delta
Delta Lake is an open source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive, aimed at data engineers and platform teams who keep large analytical tables on existing storage and need transactional guarantees across several engines.
read the full delta overview →
More in Business Software
Related comparisons
More Marketing & Customer Engagement projects
Compare either of these against the rest of the Marketing & Customer Engagement field.
Frequently asked questions
Is Listmonk or delta more popular?
Listmonk has 23,471 GitHub stars and delta has 8,999. Listmonk has the larger community by that measure.
Are Listmonk and delta free?
Both are open source. Listmonk is licensed under AGPL-3.0 and delta under Apache-2.0. Neither carries a licence fee.
What is the difference between Listmonk and delta?
Listmonk is written in Go and delta in Scala. 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 delta?
Choose Listmonk if you want the larger community (23,471 stars) or its AGPL-3.0 licence terms. Choose delta if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.