Open-source alternatives to Conductor

Flowable Engine is a business process management platform and workflow engine used to automate business processes and orchestrate human and system activities. It provides a suite for modeling, deploying, and executing complex workflows and decision rules across distributed environments, including a dedicated case management system for unstructured processes and ad-hoc activities. The platform is a Kubernetes native workflow orchestrator that can be deployed as a containerized service using manifests and Helm charts. It supports an embedded runtime model, allowing the engine to integrate as a

Activiti is a workflow engine designed to model, execute, and manage business processes using the BPMN 2.0 standard. It functions as a Java-based framework that embeds process orchestration directly into enterprise applications and microservices to coordinate sequences of tasks and human-centric interactions. The platform utilizes a persistent state machine to maintain the status of long-running workflows in a relational database, ensuring continuity across system restarts. It manages high-volume environments through optimistic concurrency control, which tracks versioning tokens to prevent da

Cadence is a distributed workflow orchestration engine designed to execute long-running, asynchronous business logic with built-in durability and resilience across distributed systems. It functions as a stateful process manager that ensures processes resume from their last known state following system crashes or network outages. The platform utilizes a distributed task queue to manage work across independent worker nodes and supports persistence via SQL or Cassandra backend storage. It includes a workflow visualization dashboard for inspecting execution histories and state traces, alongside a

Go-workflow is a lightweight library designed for defining and executing business process logic through a state-machine engine. It enables the automation of multi-step operations by managing task lifecycles, approval consensus, and the progression of processes through defined stages. The engine utilizes a data-driven approach where business processes are structured as serialized JSON arrays, allowing for the definition of routing paths and task sequences without the need for visual modeling tools. It supports hierarchical node nesting to represent complex, multi-stage workflows and employs co

This project is a library of pre-configured n8n workflow templates and structural blueprints designed for automating business processes and AI tasks. It provides a collection of JSON files that can be imported into a workflow engine to deploy automation sequences, including specialized configurations for integrating vector databases and large language models. The collection focuses on the development of context-aware AI agents, utilizing memory buffers and retrieval systems to create intelligent data generation and retrieval pipelines. It includes dedicated blueprints for retrieval augmented

Appsmith is a low-code platform designed for building internal business tools, such as operational dashboards and administrative panels. It enables developers to construct dynamic user interfaces by dragging and dropping modular widgets onto a canvas and binding them directly to backend data sources. The platform utilizes a reactive framework that automatically updates interface elements and triggers functions whenever underlying data or widget properties change, eliminating the need for manual event handling. The platform distinguishes itself through a server-side proxy architecture that exe

Luigi is a Python framework designed for building and managing complex batch data pipelines. It functions as a workflow orchestration engine that organizes tasks into directed acyclic graphs, ensuring that jobs execute in the correct logical order based on their dependencies. By utilizing a centralized scheduler, the system coordinates task execution across distributed environments, tracks global workflow state, and prevents redundant processing by verifying the existence of output targets before triggering any work. The project distinguishes itself through a robust state-tracking mechanism t

GoCD is a continuous delivery server and build automation platform designed to orchestrate software delivery pipelines. It functions as a CD pipeline orchestrator that manages the automated execution of build, test, and deployment stages to move code from commit to production. The system utilizes an agent-based job execution model where remote agents pull work from a central server via polling. It employs a state-machine approach to pipeline orchestration, tracking the progression of software through stages and managing immutable build outputs via a central artifact repository to ensure consi

Zeebe is a cloud-native workflow engine and distributed state machine designed for business process orchestration using BPMN and DMN standards. It operates as a high-performance gRPC workflow runtime that executes complex business processes through a partitioned event-streaming architecture. The system also functions as an orchestrator for large language model agents, coordinating AI reasoning and tool use within deterministic business processes. The engine is distinguished by its peer-to-peer broker networking and a consensus-based data replication model that ensures high availability and fa

Huginn is a self-hosted automation platform that functions as an event-driven workflow engine. It allows users to build autonomous agents that monitor web services, scrape data, and execute complex tasks by propagating events through a directed graph. By running on your own server infrastructure, it provides a private environment for orchestrating workflows without relying on third-party automation services. The platform distinguishes itself through a modular, plugin-based architecture that enables the development of custom agents to handle specific data processing needs. Each agent maintains

Camunda is a business process automation platform and orchestration tool used to model, deploy, and monitor automated workflows and human-centric tasks. It features a BPMN workflow engine for executing processes based on the BPMN 2.0 standard and a DMN decision engine for automating business logic and rule evaluation. The platform is designed for flexibility through an embedded workflow library that allows the engine to be integrated directly into custom applications. It supports multi-tenant workflow management, enabling the secure separation of process definitions and instance data for mult

Inngest is a durable execution framework and event-driven automation engine designed to orchestrate background workflows. It enables developers to build resilient, stateful processes by memoizing function steps, ensuring that long-running tasks can automatically resume from the last successful operation after failures, timeouts, or infrastructure restarts. The platform distinguishes itself through its event-driven architecture, which uses a schema-validated bus to trigger functions and coordinate complex, multi-step logic. It employs an onion-model middleware approach for cross-cutting concer

Automa is a browser-based automation platform that enables users to build, schedule, and execute repetitive web tasks through a visual, no-code interface. By operating as a browser extension, it provides a canvas-based environment where users construct workflows by connecting functional blocks to interact with web elements, manage browser state, and process data. The platform distinguishes itself through its deep integration with the browser environment, allowing for complex orchestration such as event-driven triggers, cross-origin request handling, and the ability to package workflows as sta

Prefect is a workflow orchestration platform designed to define, schedule, and monitor complex data pipelines as Python code. It functions as a container-native engine that wraps individual tasks in isolated environments, ensuring consistent dependencies and resource allocation across diverse infrastructure. By utilizing a state-machine-based orchestration model, the system tracks execution progress through discrete transitions and persistent event logs to maintain reliable and observable task processing. The platform distinguishes itself through a decoupled worker-API architecture, which sep

RavenDB is a multi-model NoSQL document database designed for high-performance, ACID-compliant data storage. It persists structured information as schema-flexible JSON documents and utilizes a unit-of-work session pattern to track entity changes and batch modifications into atomic transactions. The platform is built on a distributed architecture that supports horizontal scaling through sharding and ensures high availability via multi-node, master-to-master cluster replication. The database distinguishes itself through a self-optimizing query engine that automatically creates and maintains ind

Docker Compose is a tool for defining and running multi-container applications through declarative configuration files. It functions as an application lifecycle manager, coordinating the startup, shutdown, and scaling of interconnected services within isolated environments. By using a standardized configuration format, it enables infrastructure as code, allowing developers to manage complex application stacks and their dependencies in a single, repeatable file. The project distinguishes itself by integrating directly with the broader Docker platform, leveraging a client-server architecture wh

This project is an AI agent orchestration platform that provides a visual environment for building, testing, and deploying complex automation workflows. It functions as a low-code development interface where users can chain discrete functional blocks into dependency-aware pipelines to integrate artificial intelligence with external data and services. The platform supports the creation of intelligent conversational agents, automated business processes, and multi-service API orchestrations within a unified workspace. The platform distinguishes itself through its event-driven integration engine,

Grav is a flat-file content management system that eliminates the need for a traditional database by storing site content and configuration in human-readable Markdown and YAML files. Built as a modular PHP web framework, it uses a hierarchical page routing system where the physical directory structure directly determines the site's URL paths. The platform is distinguished by its event-driven plugin architecture and a command-line interface that prioritizes system administration, deployment, and maintenance tasks. It utilizes a blueprint-driven system to generate administrative forms from stru

go-coffeeshop is an event-driven microservices architecture designed to manage the end-to-end lifecycle of customer orders. It coordinates independent services using asynchronous messaging patterns to handle business workflows, background processing, and order fulfillment tracking. The project utilizes a HashiCorp stack for infrastructure, employing Nomad, Consul, and Vault for service orchestration and secret storage. Infrastructure is managed through declarative automation using Terraform to ensure consistent and repeatable deployment of compute resources and networking. The system include

Tilt is a Kubernetes development orchestrator and containerized workflow manager that automates the build, deploy, and update loop for cloud-native services. It functions as an infrastructure-as-code environment, defining the entire local development setup as versioned code to synchronize local source changes with cluster deployments. The project distinguishes itself by offering live container updates, which sync files directly into running containers to bypass full image rebuilds and redeployments. It includes a cloud-native development dashboard for monitoring resource health, streaming agg

This project is a Spring Boot reference implementation and learning resource designed to demonstrate the core features and architectural patterns of the Spring framework. It serves as a Java enterprise application template and boilerplate for building RESTful APIs, providing a structured codebase for practicing application development. The repository provides practical examples of microservices architecture orchestration, including the use of service discovery and inter-service communication to coordinate distributed services. It also implements reference patterns for RESTful API design with

ToolJet is a low-code development platform designed for building and deploying internal business applications. It provides a visual interface where users can drag and drop components to design layouts, connect to various data sources, and execute custom logic. The platform is built on a containerized architecture, ensuring that applications remain portable and consistent across different cloud and server environments. The platform distinguishes itself through integrated artificial intelligence capabilities that assist in the generation of user interfaces, database schemas, and data queries fr

This platform is a modular, metadata-driven framework designed for building custom business applications and data management systems without traditional coding. It functions as a low-code environment where data models, user interfaces, and business logic are defined through visual configurations rather than hardcoded views. The architecture supports multi-tenant isolation, allowing multiple independent applications to run within a single shared memory space while maintaining strict logical separation of data and configurations. What distinguishes this system is its deep integration of artific

This project is a framework for developing and orchestrating autonomous software agents within JVM-based applications. It provides a toolkit for embedding artificial intelligence directly into business logic, enabling agents to perform complex tasks through dynamic, goal-oriented planning rather than rigid state machines. By leveraging declarative annotations, the framework allows developers to define agent capabilities and integrate them into existing object-oriented domain models. The framework distinguishes itself through a vendor-neutral abstraction layer that allows for the seamless swap

Pholcus is a distributed web crawling system designed for large-scale data scraping. It employs a master-worker distribution model to coordinate high-concurrency scraping tasks across a network of remote client nodes, enabling both horizontal and vertical data collection. The system features a hot-loadable rule engine that allows extraction and navigation logic to be updated at runtime without restarting the process. It handles dynamic content through headless browser integration and bypasses bot detection using proxy rotation, automated user authentication, and simulated human behavior. The

xboot is a full-stack development platform and low-code application framework pairing a Spring Boot backend with a Vue.js frontend. It provides a scaffolding environment for enterprise application development, focusing on rapid development through automated code generation for business logic, interfaces, and data operations. The platform features a visual workflow orchestrator for modeling and executing multi-step business process automation and an identity and access manager implementing OAuth2, single sign-on, and social login integration. It includes a distributed system utility suite that

Hazelcast is a distributed data platform that combines an in-memory data grid with a stream processing engine to support real-time analytics and event-driven applications. It functions as a partitioned, distributed key-value store that replicates data across cluster nodes to provide low-latency access and high availability. The platform also serves as a distributed SQL query engine, allowing users to execute standard SQL statements against both in-memory datasets and external data sources. What distinguishes Hazelcast is its use of a distributed consensus subsystem to maintain strongly consis