Ddd Python Packages

eventsourcing

A library for event sourcing in Python.

hexcore

Reusable core for Python projects with hexagonal architecture, DDD, CQRS and background tasks. Ships the abstractions and the infrastructure: SQL session layer, FastAPI factories, worker runner, dynamic cron and identity.

forze

Python toolkit for hexagonal backend services — domain and application layers that import nothing from your framework, database, or transport

sutoppu

A simple python implementation of Specification pattern.

eventsourcing-helpers

Python library for practicing the event sourcing pattern using DDD

moai-adk

Agentic development harness for Claude Code — SPEC-driven plan/run/sync, TRUST 5 quality gates, model+effort routing, and Claude×GLM multi-LLM cost control. Single Go binary, 16 languages, zero deps.

msb-arch

A dependency-free domain layer for Python: entities, invariants and operations independent of UI, storage and transport — driven through one entry point by requests that are data, recordable and replayable.

lanorme

Executable codebase standards for Python: quality, style, architecture, and structure, checked mechanically on every commit. Ready-made checks (normes) cover the common ground; a plugin interface lets a team add its own. The same gate runs in CI and inside an AI agent's loop. Docs: https://lanorme.github.io/lanorme/

aioddd

Async DDD utilities Python library

dddesign

Domain Driven Design Library

cqrs-bus

Async CQRS command/query bus and mediator for Python — handler auto-discovery, type-based dependency injection, middleware, and an event bus.

flunt

Python implementation of Domain Notification Pattern

pytest-orm-boundaries

Enforce the DDD aggregate boundaries you define in your ORM

pycider

Aggregate Composition for Python. A domain driven design architecture.

pydomain-lib

DDD, CQRS & Event Sourcing building blocks for Python — aggregates, value objects, domain events, command/query buses, event store, sagas, and more

injex

Tiny typed dependency injection for Python: explicit wiring, graph validation, zero deps, fast resolves.

repka

Simple work with db in async style

operetta

A lightweight framework for building Python applications that is not tied to a specific transport protocol

svl-cli

Linter and architecture audit tool for AI agent specifications. Sovereignty by Deliverable — doctrine-grounded rules, kind-aware audits, OWASP Agentic Top 10 pack.

aioevents-ng

A simple library for managing events through an asynchronous queue

fennflow

Atomic-like Agnostic Object Storage Framework, the Pydantic way

py-assimilator

Python Domain-Driven Design, Event-Based Systems, CRUD patterns

dddkit

Kit for using DDD tactical patterns

python-seedwork

DDD and Hexagonal (Clean) Architecture building blocks.