There are no differences in software features between the community edition and the two commercial editions, but you do get "unlimited bug support" and "installation support" with the paid versions. Openbravo will also sell a hosted version that comes with an Oracle license and a server. I'm guessing that many customers will also look at hiring some of the Openbravo developers to help customize the code. This kind of in-house knowledge is often worth the price.
Compiere ERP and CRM: Form-ed for customization
The Compiere package takes its name from the Italian verb for "accomplish" or "fulfill." It comes with both acronyms, ERP and CRM, indicating that it handles the two jobs pretty well. Like Openbravo, it is a set of database tables built to track customers, products, and the transactions between them. And like SugarCRM it offers a fairly sophisticated set of routines for juggling your customers and reaching out to them.
The Compiere system is built in Java and uses either Oracle or Postgres. Support for any JDBC database is said to be coming eventually. Ports to MySQL, Sybase, and Firebird are said to be in beta now.
The Compiere Web interface is similar to those of Openbravo and Sugar. There's a menu of options for tables, and you can drill down to add new lines to the tables or search for old ones. I floundered for a few minutes before I discovered that it was possible to drill down into subforms, something that's necessary when the database is forcing you to make sure that the client name you put down on an invoice matches a real client in the client table. There are a fair number of AJAX-like features for completing the forms and searching the table, although the tools for filling out the forms seemed easier to use for me. In general, it's a pretty modern interface.
I discovered the biggest gap between the community version and the professional version when testing Compiere's tools. The community version took a morning to install, and I found myself flummoxed by the client that would constantly keep resetting the Postgres port to 5444. The professional version, on the other hand, started up in about 15 minutes once I added the newer EnterpriseDB version of Postgres.
The basic community version of Compiere dates from the era when the browser wasn't as sophisticated and AJAX was just a kitchen cleanser. The community version interacts with the central database using a custom Java client. You need to buy the newer professional version to get the modern and more convenient Web-based interface.
More features start appearing once you start paying. Documentation is not free unless you sign up for the standard version ($25 per seat per month). Reporting tools are also tossed in. To get the Web-based interface you must spring for the professional edition ($50 per seat per month), a level of service that also includes unlimited support requests and other assorted bug fixes. There's also a "cloud edition" ($66 per seat per month) that wraps the professional edition into a pre-built image for Amazon's EC2.
There's not as much openness with Compiere as with SugarCRM and Openbravo. There's no open bazaar of plug-ins, nor is there much obvious energy devoted to modifying the code. Most of the threads on the forum hosted at SourceForge seem focused on installation problems. I'm not sure why. It isn't because the system is closed. In fact Compiere includes a pretty nice set of APIs and tools for calling external pieces of code.
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