head to head · open source
monolog vs stern
monolog has 21,405 GitHub stars, 1,910 forks, 3 open issues and last shipped yesterday. stern has 4,866 stars, 178 forks, 39 open issues and last shipped 6 days ago. monolog leads on adoption by 340% (21,405 vs 4,866 stars). monolog is written in PHP under MIT; stern is written in Go under Apache-2.0. monolog has attracted 9% as many forks as stars, stern 4%. monolog was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (logging), 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
| monolog | stern | |
|---|---|---|
| GitHub stars | ★ 21K | ★ 4.9K |
| License | MIT | Apache-2.0 |
| Written in | PHP | Go |
| Last push | 2026-09-19 | 2026-09-14 |
| Forks | ⑂ 1.9K | ⑂ 178 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick monolog if
- You weight community size — 21K stars and counting
- You want the MIT license terms
- Your stack matches PHP
- You value the larger contributor base for long-term maintenance
pick stern if
- You want the stern 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 stern fits your workflow better
About monolog
Monolog is a logging library for PHP that sends log records to files, sockets, inboxes, databases, and various web services. It ships with the handlers, formatters, and processors needed to route records where they belong, and special handlers allow more advanced logging strategies than a single output stream. The library lives in the PHP ecosystem and is distributed through Packagist as monolog/monolog . It is released under the MIT license and has been developed for sixteen years, with more than twenty one thousand stars and roughly nineteen hundred forks on GitHub.
read the full monolog overview →
About stern
Stern is a command line tool that tails logs from multiple Kubernetes pods and multiple containers at the same time, colour coding each result, and it is built for developers and operators who debug workloads on Kubernetes instead of reading pods one at a time.
read the full stern overview →
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Frequently asked questions
Is monolog or stern more popular?
monolog has 21,405 GitHub stars and stern has 4,866. monolog has the larger community by that measure.
Are monolog and stern free?
Both are open source. monolog is licensed under MIT and stern under Apache-2.0. Neither carries a licence fee.
What is the difference between monolog and stern?
monolog is written in PHP and stern 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, monolog or stern?
Choose monolog if you want the larger community (21,405 stars) or its MIT licence terms. Choose stern if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.