head to head · open source
serviette vs langtest
serviette has 58,732 GitHub stars, 1,547 forks, 8 open issues and last shipped yesterday. langtest has 561 stars, 53 forks, 6 open issues and last shipped 2 months ago. serviette leads on adoption by 10,369% (58,732 vs 561 stars). serviette is written in Python under MIT; langtest is written in Python under Apache-2.0. serviette has attracted 3% as many forks as stars, langtest 9%. serviette 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
| serviette | langtest | |
|---|---|---|
| GitHub stars | ★ 59K | ★ 561 |
| License | MIT | Apache-2.0 |
| Written in | Python | Python |
| Last push | 2026-11-02 | 2026-08-28 |
| Forks | ⑂ 1.5K | ⑂ 53 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick serviette if
- You weight community size — 59K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick langtest if
- You want the langtest feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and langtest fits your workflow better
About serviette
serviette Looking for llm app templates? All templates, cookbooks and examples are still available in full in the Pathway repository under examples/llm app . A no code, always up to date RAG server for any vector database — built on the Pathway Live Data Framework. Point serviette at a folder of documents, pick a vector database and an embedder in one YAML file, and run two commands: you get a chat and a REST API that answer from those documents and cite their sources. From then on, any change to the documents — an edit, a new file, a deletion — is reflected in the answers within seconds. serviette runs on…
read the full serviette overview →
About langtest
LangTest: Deliver Safe & Effective Language Models Project's Website • Key Features • How To Use • Benchmark Datasets • Community Support • Contributing • Mission • License Project's Website Take a look at our official page for user documentation and examples: langtest.org Key Features Generate and execute more than 60 distinct types of tests only with 1 line of code Test all aspects of model quality: robustness, bias, representation, fairness and accuracy. Automatically augment training data based on test results (for select models) Support for popular NLP frameworks for NER, Translation and Text…
read the full langtest overview →
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Frequently asked questions
Is serviette or langtest more popular?
serviette has 58,732 GitHub stars and langtest has 561. serviette has the larger community by that measure.
Are serviette and langtest free?
Both are open source. serviette is licensed under MIT and langtest under Apache-2.0. Neither carries a licence fee.
What is the difference between serviette and langtest?
serviette is written in Python and langtest 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, serviette or langtest?
Choose serviette if you want the larger community (58,732 stars) or its MIT licence terms. Choose langtest if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.