head to head · open source
jaeger vs monolog
jaeger has 23,366 GitHub stars, 3,220 forks, 547 open issues and last shipped yesterday. monolog has 21,404 stars, 1,921 forks, 3 open issues and last shipped 2 days ago. jaeger leads on adoption by 9% (23,366 vs 21,404 stars). jaeger is written in Go under Apache-2.0; monolog is written in PHP under MIT. jaeger has attracted 14% as many forks as stars, monolog 9%. jaeger was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (hacktoberfest), 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
| jaeger | monolog | |
|---|---|---|
| GitHub stars | ★ 23K | ★ 21K |
| License | Apache-2.0 | MIT |
| Written in | Go | PHP |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 3.2K | ⑂ 1.9K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick jaeger if
- You weight community size — 23K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick monolog if
- You want the monolog feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches PHP
- You evaluated both and monolog fits your workflow better
About jaeger
[![Slack chat][slack img]]( get in touch) [![Unit Tests][ci img]][ci] [![Coverage Status][cov img]][cov] [![Project+Community stats][community badge]][community stats] [![FOSSA Status][fossa img]][fossa] [![OpenSSF Scorecard][openssf img]][openssf] [![OpenSSF Best Practices][openssf bp img]][openssf bp] [![CLOMonitor][clomonitor img]][clomonitor] [![Artifact Hub][artifacthub img]][artifacthub] Jaeger a Distributed Tracing System 💥💥💥 Jaeger v2 is out! Read the blog post and try it out. Quick Start Get Jaeger running in seconds with Docker: For production deployments and more options, see the Getting Started…
read the full jaeger overview →
About monolog
Monolog Logging for PHP Note This is the documentation for Monolog 3.x , if you are using older releases see the documentation for Monolog 2.x or Monolog 1.x Monolog sends your logs to files, sockets, inboxes, databases and various web services. See the complete list of handlers below. Special handlers allow you to build advanced logging strategies. This library implements the PSR 3 interface that you can type hint against in your own libraries to keep a maximum of interoperability. You can also use it in your applications to make sure you can always use another compatible logger at a later time. As of 1.11.0…
read the full monolog overview →
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Frequently asked questions
Is jaeger or monolog more popular?
jaeger has 23,366 GitHub stars and monolog has 21,404. jaeger has the larger community by that measure.
Are jaeger and monolog free?
Both are open source. jaeger is licensed under Apache-2.0 and monolog under MIT. Neither carries a licence fee.
What is the difference between jaeger and monolog?
jaeger is written in Go and monolog in PHP. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, jaeger or monolog?
Choose jaeger if you want the larger community (23,366 stars) or its Apache-2.0 licence terms. Choose monolog if its feature set, stack or MIT licence fits better. Both are self-hostable.