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Python Backend • pypi

Best FastAPI Packages

Modern, fast web framework for building APIs with Python. Automatic OpenAPI docs.

Rankings based on adoption rates from 1,010+ real FastAPI projects on GitHub.

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1,010+
Projects Analyzed
58,475
Package Relationships
20
Top Packages

Top FastAPI Packages by Adoption

Ranked by usage across 1,010+ real FastAPI projects

1
fastapi
pypi
100%
confidence
2
pydantic
pypi
100%
confidence
3

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Rankings based on what real FastAPI projects actually use in production—not opinions.

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Data updates continuously. See what's being adopted now, not what was popular years ago.

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© 2026 PatternStack. Community-driven package intelligence.

transformers
pypi
90%
confidence
4
numpy
pypi
90%
confidence
5
opentelemetry-api
pypi
100%
confidence
6
anyio
pypi
83%
confidence
7
typing-extensions
pypi
86%
confidence
8
annotated-doc
pypi
86%
confidence
9
optuna
pypi
83%
confidence
10
cuda-bindings
pypi
83%
confidence
11
colorlog
pypi
83%
confidence
12
cuda-pathfinder
pypi
83%
confidence
13
perf-analyzer
pypi
83%
confidence
14
pytz
pypi
83%
confidence
15
pandas
pypi
83%
confidence
16
plotly
pypi
83%
confidence
17
dill
pypi
83%
confidence
18
pytest
pypi
83%
confidence
19
pytest-asyncio
pypi
83%
confidence
20
typing-inspection
pypi
86%
confidence

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