Complex sentence: In February 1994 Navisoft Inc. released Navipress, which was a web browser with an integrated HTML editor, which was very similar to the first web browser (created by TIm Berners-Lee) WorldWideWeb, for Mac OS and Microsoft Windows.
Split into simpler sentences: In February 1994 NaviSoft Inc. released Navipress, which was a web browser with an integrated HTML editor. Navisoft was very similar to the first web browser (created by TIm Berners-Lee), WorldWideWeb, for Mac OS and Microsoft Windows.