List of trademarked open-source software

This is a list of free/open-source software whose names are covered by registered trademarks. As many countries provide some form of basic protection for unregistered (common law) trademarks, nearly any free or open-source software title May Be trademarked under common law. This list covers software whose trademarks are registered under a country's intellectual property body.

Name

Trademark holder

Date filed

BitTorrent

BitTorrent, Inc.

September 12, 2004

Debian

Software in the Public Interest

November 7, 1997

DRBD

LINBIT Information Technologies

February 4, 2005

Ethereal

Ethereal, Inc.

March 10, 2003

Finnix

Ryan Finnie

August 17, 2006

FreeBSD

FreeBSD Foundation

July 6, 1994

GNOME

GNOME Foundation

February 7, 2002

ImageMagick

ImageMagick Studio LLC

November 27, 2003

KDE

KDE e.V.

September 1, 2003

Linux

Linus Torvalds

August 15, 1994

LSB

Linux Foundation

June 24, 2002

Mozilla Firefox

Mozilla Foundation

December 22, 2003

Mozilla Thunderbird

Mozilla Foundation

September 20, 2006

MySQL

Oracle America

July 6, 2001

NetBSD

The NetBSD Foundation

April 20, 2004

Nmap

Insecure.Com LLC

December 18, 2003

OpenOffice.org

Oracle America

October 15, 2006

Perl

Yet Another Society

January 27, 2005

pkgsrc

The NetBSD Foundation

July 6, 2004

Python

Python Software Foundation

May 5, 2005

Qt

Nokia

February 1, 2001

ReactOS

ReactOS Foundation (Russia)

February 20, 2008

Sendmail

Sendmail, Inc.

March 13, 1998

SpamAssassin

Apache Software Foundation

July 30, 2002

Subversion

Apache Software Foundation

February 13, 2006

Tor

The Tor Project, Inc.

May 3, 2007

TriSano

Collaborative Software Initiative

July 29, 2008

VNC

RealVNC

June 6, 2007

Wireshark

Gerald Combs

July 10, 2006 (word mark)
July 13, 2006 (design mark)

XFS

Silicon Graphics, Inc.

July 11, 2002