An ecosystem. A shared way to build.

Enterprise patterns.
Your language.

A shared way to build enterprise applications. Native frameworks, familiar patterns, and connected tools—so every team can build in the language they love.

Find your framework Explore GitHub
Shared patterns. Independent implementations.
A small spark. A shared vision.
Find your framework

A shared approach.
A home in your language.

Choose the implementation that fits your team. Explore its programming model, working examples, and learning resources.

Java

Firefly for Java

Spring Boot · WebFlux · Reactor

The original modular framework for reactive services, distributed workflows, and enterprise integrations.

Explore Firefly for Java Python

PyFly

Native async Python

A cohesive application model with type-driven dependency injection, web APIs, persistence, and messaging.

Explore PyFly PHP

LaraFly

Built on Laravel

An attribute-driven application layer for Laravel, with explicit use cases, transactions, and security.

Explore LaraFly Rust

Firefly for Rust

Tokio · Axum

Application patterns expressed through Rust traits, declarative macros, and asynchronous services.

Explore Firefly for Rust C# / .NET

Firefly for .NET

ASP.NET Core

Connect typed commands, queries, HTTP services, and application modules through familiar .NET conventions.

Explore Firefly for .NET

Shared architectural ideas, independent implementations. Each framework page explains its own capabilities and available integrations.

Architecture with intention

Less plumbing. More possibility.

Three clear responsibilities. One connected application.
Explore how Firefly keeps your business at the center.

Protect the rules. Keep the freedom.

Model your business independently of the systems around it. The domain owns its behavior and invariants, so a new database or delivery channel does not have to reshape your business logic.

Business behavior stays at the center.
A common language for complex systems

Patterns your whole team
can reason about.

Carry familiar architectural ideas from one service to the next. Explore the patterns across the ecosystem, then choose the capabilities available in your framework.

Commands & queries

Separate requests that change state from requests that read it. Give each use case a focused handler.

Command Query Responsibility Segregation

Events

Express what happened in your domain. Let other parts of the system react through explicit event contracts.

Domain events & event-driven architecture

Workflows

Describe a process as connected steps, with explicit dependencies, outcomes, and recovery paths.

Process orchestration

Sagas

Coordinate local operations across services. Compensate completed steps when a later operation fails.

Distributed coordination & compensation

TCC

Reserve resources in a try phase, then confirm the operation or cancel the reservation.

Try · Confirm · Cancel

Ports & adapters

Describe what your application needs through interfaces. Connect infrastructure providers at the boundary.

Hexagonal architecture
Learn by building

Read the ideas.
Build the application.

Follow a real project from its first endpoint to its application architecture. Explore the books, companion code, and available editions.

Original cover of Firefly for Java by Example
Java

Firefly for Java by Example

Reactive Microservices with Spring Boot, WebFlux & the Firefly Framework

Read the manuscript
Original cover of PyFly by Example
Python

PyFly by Example

Event-Driven Python Microservices with the Firefly Framework

PDF & EPUB editions
Original cover of LaraFly by Example
PHP

LaraFly by Example

Hexagonal PHP Microservices on Laravel 13 with the Firefly Framework

PDF & EPUB editions
Original cover of Firefly for Rust by Example
Rust

Firefly for Rust by Example

Event-Driven Rust Microservices with the Firefly Framework

PDF & EPUB editions

Published editions and source manuscripts are linked separately. Downloadable books include English and Spanish editions; framework pages link to the exact available release.

The bigger picture

More than a framework.
A connected ecosystem.

Start with an application framework. Add the capabilities your system needs. Bring in AI, data science, and developer tools when the work calls for them.

Intelligent systems

Give your applications
a new kind of intelligence.

Firefly Agentic brings agents, tools, memory, and orchestration together on Pydantic AI. The Agentic Bridge provides a reactive integration layer for Java services.

Explore Firefly Agentic Discover the Java bridge ↗
Data science

From data to decisions.

Composable workflows for exploration, feature engineering, training, and serving.

Explore Data Science
Developer experience

From an idea to a service.

The Firefly CLI sets up the Java workspace, scaffolds services from project archetypes, and checks your development environment.

Explore the Firefly CLI

Building blocks for the bigger challenges.

Explore the Java modules

Distributed systems

Workflows, Saga, and TCC. Coordinate work across service boundaries.

Orchestration / Transactions

Events & messaging

Event-driven architecture, CQRS, and event sourcing for connected services.

Events / CQRS / Event sourcing

Security & identity

Security foundations and identity-provider adapters behind clear contracts.

Security / Identity / Adapters

Data & caching

Reactive persistence and pluggable caching for your application’s data.

R2DBC / Cache / Providers

Shared foundations

Common abstractions and a consistent exception model across application modules.

Contracts / Exceptions / Modularity

Observability

Connect application behavior to metrics, distributed tracing, and health checks.

Metrics / Tracing / Health

Individual projects evolve independently. Follow their repositories for releases and implementation status.

Browse every repository
Explore the projects

Many building blocks.
One shared direction.

Java is composed of modular repositories. Each other language has its own framework workspace. Find the projects that fit your application.

70 projects · 10 categories
Python, PHP, Rust and .NET4

Choose a language framework and explore its own modules, examples, and documentation.

fireflyframework-dotnet

Builds ASP.NET Core services with data access, command and query handling, event sourcing, orchestration, and integration modules.

fireflyframework-php

Extends Laravel with attribute-driven application modules for dependency injection, repositories, transactions, security, and command and query handling.

fireflyframework-pyfly

Builds asynchronous Python services with dependency injection, web and data abstractions, messaging, and distributed application patterns.

fireflyframework-rust

Builds Rust services on Tokio and Axum with declarative macros, reactive APIs, dependency injection, and distributed application patterns.

Java foundations and application services17

Compose a Java application from shared build tools, service starters, web and data modules, and operational foundations.

fireflyframework-backoffice

Provides application context and resource controller abstractions for Java backoffice services and internal portals.

fireflyframework-bom

Aligns Java module dependency versions through a single Maven bill of materials.

fireflyframework-client

Connects Java services to remote systems through a shared client for HTTP APIs, SOAP, gRPC, GraphQL, and WebSocket.

fireflyframework-config-server

Serves shared and service-specific configuration to Java applications through Spring Cloud Config.

fireflyframework-kernel

Defines shared abstractions and a common exception hierarchy for Java framework modules.

fireflyframework-observability

Connects Java applications to metrics, distributed tracing, health checks, and structured logging.

fireflyframework-parent

Shares Maven build settings, dependency versions, and plugin configuration across the Java framework.

fireflyframework-plugins

Adds extension points and manages plugin discovery, dependencies, and lifecycle in Java applications.

fireflyframework-r2dbc

Provides reactive PostgreSQL data access with filtering and pagination for Java applications.

fireflyframework-rule-engine

Defines business rules in YAML and evaluates them with caching and audit trails.

fireflyframework-starter-application

Assembles Java modules for application services that coordinate business processes, request context, security, and plugins.

fireflyframework-starter-core

Assembles Java infrastructure modules for service connections, discovery, messaging, health checks, and resilience.

fireflyframework-starter-data

Assembles Java modules for processing data, coordinating jobs, enriching records, and handling commands and events.

fireflyframework-starter-domain

Assembles Java modules for business logic, command and query handling, distributed transactions, and events.

fireflyframework-utils

Provides shared Java utilities for template rendering, document generation, and filtering annotations.

fireflyframework-validators

Checks financial and business data such as bank identifiers, currencies, amounts, phone numbers, and tax identifiers.

fireflyframework-web

Adds consistent error responses, request idempotency, sensitive data masking, and API documentation to Spring WebFlux services.

Events, workflows and distributed transactions7

Separate business operations, exchange events, and coordinate work across services.

fireflyframework-cqrs

Separates commands that change data from queries that read it, with validation and authorization around their handlers.

fireflyframework-eda

Provides shared event publishing and consumption interfaces with adapters for Kafka, RabbitMQ, and PostgreSQL.

fireflyframework-eda-kafka

Publishes and consumes events through Apache Kafka using the Java event interfaces.

fireflyframework-eda-postgres

Delivers events through PostgreSQL with a database outbox, database notifications, and polling.

fireflyframework-eda-rabbitmq

Publishes and consumes events through RabbitMQ using the Java event interfaces.

fireflyframework-eventsourcing

Stores changes as events and provides snapshots, projections, and an outbox for publishing them.

fireflyframework-orchestration

Coordinates workflows and distributed transactions using Saga compensation and Try-Confirm-Cancel steps.

Security and identity20

Define access rules, connect identity providers, and integrate authorization and secrets services.

fireflyframework-security-adapter-cerbos

Delegates application authorization decisions to Cerbos through the security policy interface.

fireflyframework-security-adapter-opa

Delegates application authorization decisions to Open Policy Agent through the security policy interface.

fireflyframework-security-adapter-openfga

Connects the security relationship interface to OpenFGA for authorization based on relationships between users and resources.

fireflyframework-security-adapter-r2dbc

Stores token revocation records in PostgreSQL for the Java security modules.

fireflyframework-security-adapter-vault

Retrieves application secrets from HashiCorp Vault through the Java security secrets interface.

fireflyframework-security-api

Defines the security domain model and application-facing contracts used by the Java security modules.

fireflyframework-security-authorization-server

Provides an OAuth 2.0 and OpenID Connect authorization server using Spring Authorization Server.

fireflyframework-security-bff

Handles browser sign-in on the server and keeps user tokens in server sessions behind a browser cookie.

fireflyframework-security-core

Evaluates authorization rules and maps identities to permissions behind the Java security interfaces.

fireflyframework-security-idp

Defines shared identity interfaces so Java applications can use different user and authentication providers.

fireflyframework-security-idp-aws-cognito

Connects the Java identity interfaces to Amazon Cognito user pools.

fireflyframework-security-idp-azure-ad

Connects the Java identity interfaces to Microsoft Entra ID and Azure AD B2C.

fireflyframework-security-idp-internal-db

Provides a database-backed identity service with user storage, password hashing, tokens, and TOTP setup and verification helpers.

fireflyframework-security-idp-keycloak

Connects the Java identity interfaces to Keycloak through its administration API.

fireflyframework-security-method-policy

Checks authorization rules when annotated Java service methods are called.

fireflyframework-security-oauth2-client

Manages OAuth 2.0 client authorization, token refresh, and token relay for reactive Java applications.

fireflyframework-security-resource-server

Validates access tokens and maps their claims to permissions for protected Java APIs.

fireflyframework-security-spi

Defines integration contracts for token validation, policy decisions, key management, auditing, and token revocation.

fireflyframework-security-test

Provides sample principals and a configurable policy decision substitute for Java security tests.

fireflyframework-security-webflux

Connects the Java security model to Spring WebFlux authentication, security context, and request policy enforcement.

Documents and storage3

Manage document content and connect storage providers through shared interfaces.

fireflyframework-ecm

Defines shared interfaces for managing documents, folders, storage, and document audit records.

fireflyframework-ecm-storage-aws

Stores and retrieves document content in Amazon S3 through the document management interfaces.

fireflyframework-ecm-storage-azure

Stores and retrieves document content in Azure Blob Storage through the document management interfaces.

Caching5

Use a common Java caching interface with local, distributed, or database-backed storage.

fireflyframework-cache

Provides a shared Java caching interface with local Caffeine caching and adapters for external cache providers.

fireflyframework-cache-hazelcast

Connects the Java caching interface to Hazelcast for distributed cache storage.

fireflyframework-cache-jcache

Connects the Java caching interface to providers that implement the JCache standard.

fireflyframework-cache-postgres

Stores cache entries in PostgreSQL through the Java reactive caching interface.

fireflyframework-cache-redis

Connects the Java caching interface to Redis for shared cache storage.

Email, text messages and push notifications5

Connect application notifications to the delivery providers your product uses.

fireflyframework-notifications

Defines shared interfaces for email, text messages, and push notifications with replaceable delivery providers.

fireflyframework-notifications-firebase

Delivers push notifications through Firebase Cloud Messaging using the Java notification interfaces.

fireflyframework-notifications-resend

Sends email through Resend using the Java notification interfaces.

fireflyframework-notifications-sendgrid

Sends email and attachments through SendGrid using the Java notification interfaces.

fireflyframework-notifications-twilio

Sends text messages through Twilio using the Java notification interfaces.

Incoming and outgoing webhooks2

Receive events from external systems and send application events to subscribers.

fireflyframework-callbacks

Sends application events to external webhook subscribers with authorization, retries, and circuit breakers.

fireflyframework-webhooks

Receives external webhook events and routes them into applications and message queues.

AI agents and data science3

Build intelligent agents, connect them to Java applications, and explore data science workflows.

fireflyframework-agentic

Builds Python AI agents with tools, memory, validation, retrieval, and coordinated pipelines on Pydantic AI.

fireflyframework-agentic-bridge

Connects Java services to Firefly Agentic deployments through request and streaming transports.

fireflyframework-datascience

Combines automated machine learning, deep learning, and Agentic workflows for data preparation, training, and serving models.

Developer tools and learning4

Create Java services, follow worked examples, and understand the platform architecture.

.github

Hosts the organization profile, shared community guidance, and introductory documentation.

fireflyframework-cli

Provides the flywork command-line tool to scaffold, set up, diagnose, and manage Firefly Java services.

fireflyframework-java-book

Teaches the Java framework through guided application examples in English and Spanish.

fireflyframework-security-docs

Explains the Java security platform architecture, modules, integration points, and changes.

Java integration modules are specific to the Java framework. Check each language’s documentation for its available capabilities.

Open source. Open possibilities.

Your next big idea
starts with a small spark.

Find your language. Explore the code. Make something that matters.

Start building Build with the community