The suite contained no personal information manager, email client or calendar application analogous to Microsoft Outlook, despite one having been present in Star Office 5.2. Open also used the default fonts of the running operating system.
Fontwork is a feature that allows users to create stylized text with special effects differing from ordinary text with the added features of gradient colour fills, shaping, letter height, and character spacing. When Open saved documents in Microsoft Office file format, all Fontwork was converted into Word Art. Open could interact with databases (local or remote) using ODBC (Open Database Connectivity), JDBC (Java Database Connectivity) or SDBC (Star Office Database Connectivity). Versions 2.0–2.3.0 default to the ODF 1.0 file format; versions 2.3.1–2.4.3 default to ODF 1.1; versions 3.0 onward default to ODF 1.2. This was contributed to OASIS and Open Document was developed from it.
Open was primarily developed for Linux, Microsoft Windows and Solaris, and later for OS X, with ports to other operating systems.
It was distributed under the GNU Lesser General Public License version 3 (LGPL); early versions were also available under the Sun Industry Standards Source License (SISSL).
Presentation templates were available on the Open website.