There was a download of Compiere 3.3 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This software is an intellectual property of ComPiere, Inc. The program lies within Business Tools, more precisely Finances. The most popular versions among the software users are 3.3 and 3.2. The most frequent installation filenames for the software include: Compiere.exe and Compiere2.exe etc. We recommend checking the downloaded files with any free antivirus.
From the developer:
Compiere is the leading Cloud-based, open-source ERP software and customer relationship management (CRM) system. With Compiere, customers can easily and affordably customize the solution to fit their business requirements with no or minimal programming. Compiere solutions provides access to rich functionality for managing all financial, distribution, sales, and service processes.
You may want to check out more software, such as Lokad Desktop Sales Forecasting or iDempiere, which might be similar to Compiere.