A list of a few marshmallow-related repositories. Please don't hesitate to add yours here.

• lidatong/dataclasses-json - Autogenerate marshmallow schemas for Python dataclasses
• python-desert/desert - Serialization for dataclasses and attrs classes
• lovasoa/marshmallow-dataclass - Automatic generation of marshmallow schemas from dataclasses
• smarie/marshmallow-pyfields - Automatic generation of marshmallow schemas from pyfields classes

• devinaconley/py-object-factory - factory pattern for object creation, serialization, and polymorphism

• justanr/marshmallow_enum - Enum field deprecated as enums are now supported by Marshmallow 3.18.0
• marshmallow-polyfield - Polymorphic field
• marshmallow-code/marshmallow-oneofschema - Multiplexes other schemas based on object type
• daniil-berg/marshmallow-generic - Generic schema with full typing support and minimal boilerplate
• justanr/marshmallow-annotations - Generate schemas from type annotations
• facultyai/marshmallow-dataframe - Generate schemas for Pandas DataFrames
• adamboche/python-marshmallow-union - Union fields
• and-semakin/marshmallow-toplevel - Load & validate top-level lists
• szymansd/marshmallow-always-list-field - Converts field values to list

• podhmo/marshmallow-form

• marshmallow-code/flask-marshmallow - Flask integration
• marshmallow-code/flask-smorest - DB agnostic framework to build auto-documented REST APIs with Flask and marshmallow
• marshmallow-code/django-rest-marshmallow - Integration with Django REST Framework
• apiflask/apiflask - Lightweight Python web API framework based on Flask and marshmallow-code projects
• hug - hug has built-in support for marshmallow schemas and types. Simply pass in the marshmallow object as a type annotation and hug will enforce it.
• 4Catalyzer/flask-resty - Building blocks for REST APIs for Flask.
• morepath/more.marshmallow - marshmallow schema (de)serialization for Morepath
• miLibris/flask-rest-jsonapi - Flask extension to build REST APIs around JSONAPI 1.0 specification. Relies on marshmallow-jsonapi for serialization
• plangrid/flask-rebar - Flask extension that uses marshmallow for validation/marshaling and autogenerates Swagger/documentation.
• Nobatek/flask-rest-api - REST API framework built upon marshmallow, webargs, and apispec.
• ergo/pyramid_apispec - Validate Pyramid REST API's with marshmallow and generate OpenAPI documentation from the schemas.
• flask-pro/flask-first - Flask extension for using "specification first" principle via OpenAPI specification. Automatically generating Marshmallow schemas to validate and serialize a request from OpenAPI schemas.

• marshmallow-code/marshmallow-sqlalchemy - SQLAlchemy integration
• touilleMan/marshmallow-mongoengine - MongoEngine integration
• klen/marshmallow-peewee - Peewee integration
• Scille/umongo - Async/Sync MongoDB ODM based on Marshmallow

• marshmallow-code/marshmallow-jsonapi - JSON API 1.0 formatting
• marshmallow-code/apispec - Pluggable Swagger spec generator with an extension for marshmallow
• marshmallow-code/webargs - Request argument parsing built on top of marshmallow
• podhmo/swagger-marshmallow-codegen - Generate marshmallow Schemas from swagger definition files
• prkumar/uplink - uplink has built-in support for marshmallow; set your schema as a method's return type, then uplink will automatically deserialize the response.

• fuhrysteve/marshmallow-jsonschema - Translates marshmallow schemas into JSON Schema Draft v7 compliant JSON Schema.

• Dowwie/marshmallow_recipes - Useful recipes

• sloria/environs - Parses environment variables.

• marshmallow-code/marshmallow-validators - Use 3rd-party validators (e.g. WTForms, colander) validators with marshmallow