Original sentence: Information technology companies like Adobe, Apple, IBM, Intel, Microsoft, Novell, Sun Microsystems, Google and Toshiba offer products with full or partial support for Office Open XML and/or participated in the development of the Office Open XML formats, as well as other companies who may or may not be working inside the Ecma International Office Open XML technical committee (TC45)
Edited sentence: Major information technology companies like Adobe, Apple, IBM, Intel, Microsoft, Novell, Sun Microsystems, Google and Toshiba offer products with full or partial support for Office Open XML and/or participated in the development of the Office Open XML formats, as well as other companies who may or may not be working inside the Ecma International Office Open XML technical committee (TC45)