BPMN 2.0 Server including Modeling, Execution and Presistence, an open source for Node.js

Usage no npm install needed!

<script type="module">
  import bpmnServer from 'https://cdn.skypack.dev/bpmn-server';



Project Status: Active - The project has reached a stable, usable state and is being actively developed.


bpmn-server provides BPMN 2.0 Modeling, Execution and Persistence, as an open source Workflow Server for Node.js

This package is designed specifically for Node.js and developed entirely in TypeScript

A WebApp provides a UI from modeling and developing your workflow

Table of Contents


Process modeller

A web based modeler is included based on http://bpmn.io , models definitions are saved at your server Modeller

Process Execution

bpmn-server provides an bpmnEngine to execute your workflow definition supporting BPMN 2.0

Process Server

provides an environment to presist execution Instances while running and communicate with your application.

Applications can monitor and communicate to Instances whether they are running or offline, allowing user interface to query and process Workflow steps

Data Queries

Since instances are saved in MongoDB you can easily query your instances (running or completed)

Sample Web App

Included is a sample web application (running Node.js and Express.js) to allow you to visualize your workflow


This package requires Node.js and an access to MongoDB () if you don't have MongoDB already installed you can create a free cloud account here

$ mkdir myBPMN

$ cd myBPMN

$ npm install bpmn-server

$ cp node_modules/bpmn-server/WebApp/. ./  -r

xcopy /e /i /s /y node_modules\bpmn-server\WebApp\*.* .

npm install

Edit configuration file to have MongoDB point to your server or free cloud account the change would look like this: db_url: "mongodb://localhost:27017?retryWrites=true&w=majority", or: db_url: "mongodb://:@ip?retryWrites=true&w=majority",

node app


a full demo site is available @ http://bpmn.omniworkflow.com


    const server = new BPMNServer(configuration, logger);

    let response = await server.engine.start('Buy Used Car');

    // let us get the items
    const items = response.items.filter(item => {
        return (item.status == 'wait');

    items.forEach(item => {
        console.log(`  waiting for <${item.name}> -<${item.elementId}> id: <${item.id}> `);

    console.log('Invoking Buy');

    response = await server.engine.invoke({ id: response.execution.id, "items.elementId": 'task_Buy' },
        { model: 'Thunderbird', needsRepairs: false, needsCleaning: false });

    console.log("Ready to drive");

    response = await server.engine.invoke({ id: response.execution.id, "items.elementId": 'task_Drive' });

    console.log(`that is it!, process is now complete status=<${response.execution.status}>`)

for more complete examples see Examples

RoadMap and Project status

see RoadMap

Change Log



The bpmn-server resides upon the excellent library bpmn-io/bpmn-moddle developed by bpmn.io

The bpmn-server is inspired by the library bpmn-engine