SaaSHub helps you find the best software and product alternatives Learn more →
Top 23 Python json-schema Projects
-
The most sophisticated approach uses type hints and models to automatically generate documentation. FastAPI is the poster child here - it introspects your Pydantic models and function signatures to build comprehensive OpenAPI specs with minimal manual input.
-
Sevalla
Deploy and host your apps and databases, now with $50 credit! Sevalla is the PaaS you have been looking for! Advanced deployment pipelines, usage-based pricing, preview apps, templates, human support by developers, and much more!
-
-
an SQLModel entity backed by a database table doesn't validate its fields on creation, which is the point of Pydantic.
https://github.com/fastapi/sqlmodel/issues/52#issuecomment-1...
-
-
datamodel-code-generator
Pydantic model and dataclasses.dataclass generator for easy conversion of JSON, OpenAPI, JSON Schema, and YAML data sources.
-
msgspec
A fast serialization and validation library, with builtin support for JSON, MessagePack, YAML, and TOML
gjson [1] and a few other go packages offer a way to parse arbitrary JSON without requiring structs to hold them.
re: Python. I like PyRight/PyLance for Python typing, it seems to "just work" afaict. I also like msgspec for dataclass like behavior [2].
---
1: https://github.com/tidwall/gjson
2: https://jcristharif.com/msgspec/
-
uvicorn-gunicorn-fastapi-docker
Docker image with Uvicorn managed by Gunicorn for high-performance FastAPI web applications in Python with performance auto-tuning.
-
InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
-
-
apispec
A pluggable API specification generator. Currently supports the OpenAPI Specification (f.k.a. the Swagger specification)..
-
-
Project mention: New Proofs Probe the Limits of Mathematical Truth | news.ycombinator.com | 2025-02-04
https://opendata.cern.ch/
I've gotten into 3D printing, and load and temperature data of different filaments is always appreciated.
Mixing materials together, microscopic images, etc...
I get a lot of value from YouTubers who simple follow a consistent methodology of endurance or break testing products or materials. Tear downs and documentation of internals, performance statistics, etc...
Channels like CNCKitchen or ProjectFarm are excellent citizen scientists for example.
-
-
-
fastopenapi
FastOpenAPI is a library for generating and integrating OpenAPI schemas using Pydantic v2 and various frameworks (AioHttp, Falcon, Flask, Quart, Sanic, Starlette, Tornado).
Repository: GitHub
-
local-llm-function-calling
A tool for generating function arguments and choosing what function to call with local LLMs
-
-
django-jsonform
A better, user-friendly JSON editing form field for Django admin. Also supports Postgres ArrayField.
-
check-jsonschema
A CLI and set of pre-commit hooks for jsonschema validation with built-in support for GitHub Workflows, Renovate, Azure Pipelines, and more!
-
hull
The incredible HULL - Helm Uniform Layer Library - is a Helm library chart to improve Helm chart based workflows (by vidispine)
-
-
-
-
-
SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Python json-schema discussion
Python json-schema related posts
-
Dict Unpacking in Python
-
FastAPI vs Nexios: A Comprehensive Comparison of Modern Python Web Frameworks
-
A Practical Guide on Structuring LLM Outputs with Pydantic
-
Advanced Pydantic: Generic Models, Custom Types, and Performance Tricks
-
How to use FastAPI for microservices in Python
-
Show HN: FastOpenAPI – automated docs for many Python frameworks
-
Pydantic: The end of manual validations! ✨
-
A note from our sponsor - SaaSHub
www.saashub.com | 1 Sep 2025
Index
What are some of the best open-source json-schema projects in Python? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | fastapi | 88,998 |
| 2 | pydantic | 24,969 |
| 3 | sqlmodel | 16,663 |
| 4 | jsonschema | 4,826 |
| 5 | datamodel-code-generator | 3,419 |
| 6 | msgspec | 3,110 |
| 7 | uvicorn-gunicorn-fastapi-docker | 2,796 |
| 8 | pydantic-core | 1,661 |
| 9 | apispec | 1,203 |
| 10 | mashumaro | 870 |
| 11 | opendata.cern.ch | 715 |
| 12 | JSON-Schema-Test-Suite | 671 |
| 13 | streamlit-pydantic | 560 |
| 14 | fastopenapi | 427 |
| 15 | local-llm-function-calling | 427 |
| 16 | linkml | 404 |
| 17 | django-jsonform | 400 |
| 18 | check-jsonschema | 273 |
| 19 | hull | 261 |
| 20 | cadwyn | 261 |
| 21 | apischema | 236 |
| 22 | jsf | 185 |
| 23 | MOSP | 74 |
Sponsored
Deploy and host your apps and databases, now with $50 credit!
Sevalla is the PaaS you have been looking for! Advanced deployment pipelines, usage-based pricing, preview apps, templates, human support by developers, and much more!
sevalla.com