DATAllegro was a company that specializes in datawarehousing applicances. It was founded by Stuart Frost in 2003 inspired by and as a competitor to Data warehouse appliance

Data warehouse appliance

In computing, a data warehouse appliance consists of an integrated set of servers, storage, operating system, DBMS and software specifically pre-installed and pre-optimized for data warehousing...

 pioneer Netezza

Netezza

Netezza designs and markets high-performance data warehouse appliances and advanced analytics applications for uses including enterprise data warehousing, business intelligence, predictive analytics and business continuity planning....

. In contrast to rival Netezza - which still uses "commodity" PowerPC chips - DATAllegro architecture is implemented on all-commodity hardware from OEMs such as Dell Computer Corp., Cisco Systems Inc., and EMC Corp. DATAllegro - like Netezza - uses open source software stack (Ingres

Ingres

Ingres Database is a commercially supported, open-source SQL relational database management system intended to support large commercial and government applications...

 DBMS running on Linux

Linux

Linux is a Unix-like computer operating system assembled under the model of free and open source software development and distribution. The defining component of any Linux system is the Linux kernel, an operating system kernel first released October 5, 1991 by Linus Torvalds...

). This could change to Microsoft SQL Server

Microsoft SQL Server

Microsoft SQL Server is a relational database server, developed by Microsoft: It is a software product whose primary function is to store and retrieve data as requested by other software applications, be it those on the same computer or those running on another computer across a network...

 and Microsoft Windows

Microsoft Windows

Microsoft Windows is a series of operating systems produced by Microsoft.Microsoft introduced an operating environment named Windows on November 20, 1985 as an add-on to MS-DOS in response to the growing interest in graphical user interfaces . Microsoft Windows came to dominate the world's personal...

, as Microsoft

Microsoft

Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...

has acquired DATAllegro as of 2008 July.