head to head · open source
vllm vs LongMemory
vllm has 92,028 GitHub stars, 22,335 forks, 7,953 open issues and last shipped yesterday. LongMemory has 4,502 stars, 504 forks, 19 open issues and last shipped 4 days ago. vllm leads on adoption by 1,944% (92,028 vs 4,502 stars). vllm is written in Python under Apache-2.0; LongMemory is written in TypeScript under Apache-2.0. vllm has attracted 24% as many forks as stars, LongMemory 11%. vllm was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (llm), 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
| vllm | LongMemory | |
|---|---|---|
| GitHub stars | ★ 92K | ★ 4.5K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-17 | 2026-09-14 |
| Forks | ⑂ 22K | ⑂ 504 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick vllm if
- You weight community size — 92K 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 LongMemory if
- You want the LongMemory feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and LongMemory fits your workflow better
About vllm
vLLM is a high throughput, memory efficient Python library for LLM inference and serving, built for ML engineers and platform teams who need to run open weight models on their own hardware at production scale.
About LongMemory
LongMemory is a local first, self hosted cognitive memory engine for LLM applications and autonomous agents that gives stateless models durable, temporal, governed recall, written in TypeScript under the Apache 2.0 licence and aimed at developers building agent hosts, automation tools, and RAG style pipelines.
read the full LongMemory overview →
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Frequently asked questions
Is vllm or LongMemory more popular?
vllm has 92,028 GitHub stars and LongMemory has 4,502. vllm has the larger community by that measure.
Are vllm and LongMemory free?
Both are open source. vllm is licensed under Apache-2.0 and LongMemory under Apache-2.0. Neither carries a licence fee.
What is the difference between vllm and LongMemory?
vllm is written in Python and LongMemory in TypeScript. 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 LongMemory?
Choose vllm if you want the larger community (92,028 stars) or its Apache-2.0 licence terms. Choose LongMemory if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.