#39 · Primary category： Prompt Engineering Tools
prompttools
Open-source tools for prompt testing and experimentation, with support for both LLMs (e.g. OpenAI, LLaMA) and vector databases (e.g. Chroma, Weaviate, LanceDB).
Project last updated：02/11/26
GitHub Stars
3.1K
Forks
257
Contributors
12
License
Apache-2.0
Why we included this project
Developers comparing LLM outputs often end up pasting the same prompt into several chat windows. PromptTools lets you do that in code instead: you define an experiment across OpenAI, Anthropic, or LLaMA models, sweep temperature settings, and get a visualization of the results. The same harness extends to vector databases, so you can check retrieval accuracy on Chroma, Weaviate, or LanceDB without building your own test scaffold. It's a self-hostable Python library that.
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