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Dolibarr ERP & CRM is a modern and easy to use open-source web software package to manage your business (customers, invoices, orders, products, stocks, agenda, e-mailings, shipments...).

Tryton is a three-tiers high-level general purpose application platform under the license GPL-3 written in Python and using PostgreSQL as database engine.

The suite of applications Stoq is an innovative set of business management applications available as free and open source software.

FrontAccounting is a simple, but powerful, system for the entire ERP chain and covers:

The most popular version of Americas #1 small business financial software helps make your business more profitable.

]project-open[ is an open-source based Project-ERP for medium and small project oriented companies.

Free and open source human resource management software (HRMS / HRIS) with rich features and easy to use interface. It covers personnel information management, employee self service, leave, time & attendance, benefits, and recruitment.

When you use Highrise, contacts and communication history can be shared across your entire company. No more “Jim has the client’s number and he’s out of the office today.” No more “I don’t know what Jane told the printer last week.” No more “Oops, I didn’t know you already called her back—I just did too.” With Highrise, everyone’s always on the same page.

Compiere open source ERP software provides a modern, highly adaptable, low-cost ERP business solution

webERP is a complete web based accounting/ERP system that requires only a web-browser and pdf reader to use. It has a wide range of features suitable for many businesses particularly distributed businesses in wholesale and distribution. It is developed as an open-source application and is available as a free download to use. The feature set is continually expanding as new businesses and developers adopt it.There are on average 5,000 downloads per month.

Sage 50 Accounting, previously Peachtree or Simply Accounting for Canada, delivers the efficiency your business requires whether you're after rapid expansion, steady growth, or maintaining stability. This comprehensive solution lets you easily manage customer contacts and sales, customize inventory and vendor management, automate purchasing and shipping, track jobs and projects, and more!

VIENNA Advantage ERP and CRMModern, rich, scalable and open source ERP & CRM