opentaps = ERP + CRM

•    Java

opentaps Open Source ERP + CRM, is a fully integrated application suite that supports eCommerce, Customer Relationship Management, Warehouse and Inventory Management, Supply Chain Management, and Financial Management to Business Intelligence and mobility integration out-of-the-box.

OFBiz - Apache Open For Business Project

•    Java

Apache OFBiz is an open source enterprise automation software project. It means ERP (Enterprise Resource Planning), CRM (Customer RelationShip Management), E-Business / E-Commerce, SCM (Supply Chain Management), MRP (Manufacturing Resources Planning), CMMS/EAM (Maintenance Management System/Enterprise Asset Management), POS (Point Of Sale), and so on.

Openbravo - The Agile ERP

•    Java

Openbravo is the web-based Open Source ERP solution. It includes applications like Accounting, Sales and CRM, Procurement, Inventory, Production, Project and Service Management. Openbravo is three-time winner of Infoworld's Bossie award for best open source software application.

Processmaker - Open source workflow and business process management (BPM) software suite

•    PHP

ProcessMaker is an open source workflow and business process management (BPM) software suite that allows small to medium-sized organizations to automate document intensive, approval-based processes across various systems including finance, HR and operations.

iDempiere - OSGi + ADempiere, ERP, CRM Business suite

•    Java

iDempiere Business Suite which contains Enterprise resource planning (ERP), Customer relationship management (CRM), Supply chain management (SCM) done the community way. Focus is on the Community that includes Subject Matter Specialists, Implementors and End-Users. iDempiere is based on original Compiere/Adempiere plus a new architecture to use state-of-the-art technologies like OSGi, Buckminster, zk.

PhreeBooks - Web based ERP for Small Business

•    PHP

PhreeBooks accounting was developed as an open source ERP (Enterprise Resource Planning) web-based application written for the small business community. Its features include Full Inventory Management and Tracking, Banking Support, Including Check Writing, and Bank Account Reconciliation, Robust Reporting and Form Capability, Separate Customer and Vendor Account Information and lot more.

xTuple PostBooks - Accounting, CRM and ERP

•    C++

PostBooks is a full-featured, fully-integrated business management system, the core of the award winning xTuple ERP Suite. It supports Accounting, Sales, CRM, Purchasing, Inventory, Work orders, Reporting and lot more. It supports multi currency, multi lingual and multiple tax structure.

wp-erp - An open-source ERP (Enterprise Resource Planning) solution for WordPress

•    PHP

An open-source ERP (Enterprise Resource Planning) solution for WordPress

Dolibarr - Software for Business

•    PHP

Dolibarr ERP/CRM is a software to manage small or medium companies, freelancers or foundations. Its main modules include Products and services catalog, Stock management, Bank accounts management, Customers, Suppliers or Prospects directory, Contacts directory, Orders management, Contracts, Invoices, Payments management, Point of Sale, Donations management, Reporting, Data export tools and lot more.

EasyERP - ERP for Small Business

•    NodeJS

EasyERP is an Super Fast Open-Source ERP/CRM/HRM for small business based on Node.js and MongoDB. It is fully functional ERP solution in both cloud and on-premises versions, but if your company needs some specific customization or extensions, they are open for customization requests.

Vienna advantage - ERP and CRM in CSharp

•    CSharp

VIENNA Advantage is an open source ERP and customer relationship management (CRM) for small and mid sized businesses. It provides you an excellent user experience using the silverlight based Web User Interface and the iPhone and Android based Mobile User Interface. It supports Finance, Order, Material, Time and Project management, It also supports Payroll, Helpdesk and lot more.

Deskera - CRM, ERP, Project Management and HRMS

•    Java

Deskera Customer Relationship Management offers a web based CRM solution that provides your organization with a single view of your customers and helps automate critical sales processes with Leads, Contacts, Accounts and Campaign management. Deskera HRMS provides you real-time, customizable and easy-to-use features for paperless Recruitment, Performance Appraisals, easy Payroll management, Timesheet, HRIS and more.

Joget - Workflow + Low-Code Application Development + Open Source

•    Java

Joget Workflow is an open source platform to easily build enterprise web apps. It helps to build full-fledged apps e.g. CRM, HR, Healthcare, etc. More than just a workflow or BPM platform, Joget offers full-fledged agile application development capabilities (consisting of processes, forms, lists, CRUD and UI), not just back-end EAI/orchestration/integration or the task-based interface for traditional workflow/BPM products.

ADempiere - ERP Business Suite

•    Java

ADempiere is an open source ERP business suite. It has full support for Maintenance Management, Project Management, Manufacturing, Customer Relationship Management (CRM), POS, ecommerce, Human Resource, Accounting, Sales and Purchasing. It is well integrated with OLAP Business Intelligence, Financial Reporting and JasperReports.

OpenERP - Open Source Business Applications

•    Python

OpenERP is a comprehensive suite of business applications including Sales, CRM, Project management, Warehouse management, Manufacturing, Financial management, Human Resources, Point of Sale, Accounting, Purchase, Marketing and lot more. It has over 700 OpenERP modules available on Launchpad. The package contains OpenERP server, web client and GTK client.

JFire - Free ERP amp; Trading Platform

•    Java

JFire is a trading platform including ERP, CRM, accounting (full double-entry) and cross-organisation-trading written in Java based on J2EE, JDO and the Eclipse RCP. See http://www.jfire.net for more information.

Millennium BSA

•    Java

Millennium Business Suite Anywhere (BSA) is web based ERP/CRM solution with integrated BPM. Millennium BSA automates resources' planning (MRPII), distribution, inventory, payroll, HR, purchase, sales. Millennium BSA is distributed under GPL V2.

entrastructure

•    CSharp

entrastructure is a free development platform for any kind of business software, like CRM, ERP or SCM for example. The goal is to provide a robust, scalable, secure - but easy to use - platform for creating business applications.

Odoo - Open Source Apps To Grow Your Business

•    Python

Odoo (formerly OpenERP) is a suite of web based open source business apps. The main Odoo Apps include an Open Source CRM, Website Builder, eCommerce, Project Management, Billing & Accounting, Point of Sale, Human Resources, Marketing, Manufacturing, Purchase Management

Business Process Automation (BPA)

BPA is a project initiative to develop an ERP which will integrate with work flow of an organization. It is build on the concept that all business process is initiated through a request and it is processed in organizational hierarchy.