head to head · open source
vllm vs popmon
vllm has 96,158 GitHub stars, 24,317 forks, 7,953 open issues and last shipped yesterday. popmon has 512 stars, 36 forks, 12 open issues and last shipped 10 months ago. vllm leads on adoption by 18,681% (96,158 vs 512 stars). vllm is written in Python under Apache-2.0; popmon is written in Python under MIT. vllm has attracted 25% as many forks as stars, popmon 7%. vllm 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
| vllm | popmon | |
|---|---|---|
| GitHub stars | ★ 96K | ★ 512 |
| License | Apache-2.0 | MIT |
| Written in | Python | Python |
| Last push | 2026-11-02 | 2026-01-09 |
| Forks | ⑂ 24K | ⑂ 36 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick vllm if
- You weight community size — 96K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick popmon if
- You want the popmon feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and popmon fits your workflow better
About vllm
Easy, fast, and cheap LLM serving for everyone 🔥 We have built a vLLM website to help you get started with vLLM. Please visit vllm.ai to learn more. For events, please visit vllm.ai/events to join us. About vLLM is a fast and easy to use library for LLM inference and serving. Originally developed in the Sky Computing Lab at UC Berkeley, vLLM has grown into one of the most active open source AI projects built and maintained by a diverse community of many dozens of academic institutions and companies from over 2000 contributors. vLLM is fast with: State of the art serving throughput Efficient management of…
About popmon
=========================== Population Shift Monitoring =========================== popmon is a package that allows one to check the stability of a dataset. popmon works with both pandas and spark datasets . popmon creates histograms of features binned in time slices, and compares the stability of the profiles and distributions of those histograms using statistical tests , both over time and with respect to a reference. It works with numerical, ordinal, categorical features, and the histograms can be higher dimensional, e.g. it can also track correlations between any two features. popmon can automatically flag…
read the full popmon overview →
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Frequently asked questions
Is vllm or popmon more popular?
vllm has 96,158 GitHub stars and popmon has 512. vllm has the larger community by that measure.
Are vllm and popmon free?
Both are open source. vllm is licensed under Apache-2.0 and popmon under MIT. Neither carries a licence fee.
What is the difference between vllm and popmon?
vllm is written in Python and popmon in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, vllm or popmon?
Choose vllm if you want the larger community (96,158 stars) or its Apache-2.0 licence terms. Choose popmon if its feature set, stack or MIT licence fits better. Both are self-hostable.