head to head · open source
Billion Mail vs starrocks
Billion Mail has 15,611 GitHub stars, 1,702 forks, 236 open issues and last shipped 3 months ago. starrocks has 12,115 stars, 2,590 forks, 1,443 open issues and last shipped yesterday. Billion Mail leads on adoption by 29% (15,611 vs 12,115 stars). Billion Mail is written in Go under AGPL-3.0; starrocks is written in Java under Apache-2.0. Billion Mail has attracted 11% as many forks as stars, starrocks 21%. starrocks 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.
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Side by side
| Billion Mail | starrocks | |
|---|---|---|
| GitHub stars | ★ 16K | ★ 12K |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | Go | Java |
| Last push | 2026-06-11 | 2026-09-17 |
| Forks | ⑂ 1.7K | ⑂ 2.6K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Billion Mail if
- You weight community size — 16K 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 starrocks if
- You want the starrocks feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and starrocks fits your workflow better
About Billion Mail
BillionMail is an open source mail server and email marketing platform written in Go and released under the AGPL 3.0 license. It lives in the self hosted email ecosystem and is described as a solution for newsletters, promotional emails, and transactional messages. The project combines mail server topics such as Postfix, Dovecot, Rspamd, and SMTP with campaign features such as customer management, analytics, templates, and sending control.
read the full Billion Mail overview →
About starrocks
StarRocks is an Apache 2.0, Linux Foundation open query engine written in Java that delivers sub second ad hoc and multi dimensional analytics both on and off the data lakehouse, built for data platform teams, analytics engineers, and BI users who need fast SQL over large distributed datasets without moving data or rewriting SQL.
read the full starrocks overview →
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Frequently asked questions
Is Billion Mail or starrocks more popular?
Billion Mail has 15,611 GitHub stars and starrocks has 12,115. Billion Mail has the larger community by that measure.
Are Billion Mail and starrocks free?
Both are open source. Billion Mail is licensed under AGPL-3.0 and starrocks under Apache-2.0. Neither carries a licence fee.
What is the difference between Billion Mail and starrocks?
Billion Mail is written in Go and starrocks in Java. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Billion Mail or starrocks?
Choose Billion Mail if you want the larger community (15,611 stars) or its AGPL-3.0 licence terms. Choose starrocks if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.