Network
Our mission is your success: Making complex Cyber & Privacy issues understandable and actionable!

Office
LibreOffice
Free and Open Source alternative to the Microsoft Office Suite. Has alternatives to Word, Powerpoint and Excel, for instance LibreOffice can open and save to Microsoft file formats, OpenDocument, and many others.
https://www.libreoffice.org/
Scribus
Printer quality publishing application. Create signs, brochures, and newsletters.
http://www.scribus.net/
Browsers
Firefox
Open Source alternative to Chrome, Edge, and Safari. Developed by Mozilla this browser is slightly more secure out of the box and can be made even more secure with a few tweaks. Has a number of great addons as well.
https://www.mozilla.org/firefox
Brave
A Chromium based browser that is built with a focus on user privacy and blocks ads and web based trackers by default.
Thunderbird
Thunderbird is a mail and news reader with much of the same functionality that Outlook has.
https://www.thunderbird.net
Audio
Audacity
The premier audio editing tool. This program allows you to record, modify and mix audio for a variety of projects. It is used to build podcasts and create full-length CDs.
http://audacity.sourceforge.net/
CDex
Rip CD Audio into WAV files. You can also compress the files using add-in programs to convert the files to mp3.
https://cdex.mu/
Images
GIMP
An open-source image editor, an alternative to Adobe Photoshop.
http://www.gimp.org/
Video
MythTV
Create a PVR so that you can record live TV and store your DVD collection for easy playback.
http://www.mythtv.org/
MPC-BE
Based on Media Player Classic and Media Player Classic - Home Cinema. MPC-BE is a lightweight, open source, no-frills video player that just works.
https://sourceforge.net/projects/mpcbe/
Plex
Plex is a software suite designed for video storage and streaming containing both a client and server. Media is hosted on a local server and can be watched on the web or via an app which is available on a number of streaming devices.
Antivirus
Windows Defender
The built in Antivirus for Microsoft Windows, comes already installed and works out of the box.
https://www.microsoft.com/en-us/windows/comprehensive-security
MalwareBytes
When Windows Defender doesn't offer enough protection MalwareBytes is the perfect complement.
MISC
CD Burner XP Pro
Not open source, but still a great CD burner. It will burn several types of CDs and DVDs. It will also burn a CD from an ISO.
http://www.cdburnerxp.se/
VirtualBox
Software designed for the creation and management of virtual machines. Originally developed by Sun Microsystems both were acquired by Oracle in 2010 but virtualbox has remained open source as of 2018.
An Extended List of Open Source Free Tools for Windows
Audio Editing Tools
- CDex [GNU GPL]
- Ogg Vorbis
- Musepack [GNU LGPL, BSD]
- Audacity [GNU GPL]
- LAME [GNU LGPL]
- AudioCoding
- Mp3splt [GNU GPL]
- Mp3Wrap [GNU GPL]
- Alba Extractor [GNU GPL]
- Mp3 Tag Tools [GNU GPL]
- MusicBrainz Tagger [GNU GPL]
- split3pm [No license]
Business Software
- vtiger CRM [MPL]
- webERP [GNU GPL]
- Open For Business [MIT]
- ERP5 [GNU GPL, GFDL, GPDL, GPPL]
- GNU Enterprise [GNU GPL]
- SQL-Ledger [GNU GPL]
CAD Software and Electronic Design Automation (EDA)
Compression/ZIP
Databases
- MySQL [GNU GPL]
- PostgreSQL [BSD]
- DBDesigner [GNU GPL]
- Firebird [InterBase Public License]
- FlameRobin [Other/Proprietary]
- SAP DB [GNU GPL and GNU LGPL]
Dictionaries
Encyclopedia
FTP Clients
Graphics
- GIMP [GNU GPL]
- ImageMagick [Other/Proprietary License]
- Sodipodi [GNU GPL]
- Inkscape [GNU GPL]
- Synfig [GNU GPL]
- POV-Ray [Other/Proprietary License]
- Dia [GNU GPL]
- OpenFX
- Blender [GNU GPL or BL license]
- Wings 3D [BSD]
- Art of Illusion [GNU GPL]
- Irrlicht Engine [zlib/libpng License]
- Skencil [GNU GPL]
- Jahshaka [GNU GPL]
- hugin [GNU GPL]
- potrace [GNU GPL]
- jhead [GNU GPL]
- Tux Paint [GNU GPL]
- GLE [GNU GPL]
- K-3D [GNU GPL]
- ASCII Generator dotNET [GNU GPL]
Instant Messaging
- Gaim [GNU GPL]
- SIM-IM [GNU GPL]
- aMSN [GNU GPL]
- Psi [GNU GPL]
- WinJab [GNU GPL]
- Ayttm [GNU GPL]
- BitlBee (gateway to IM networks) [GNU GPL]
IRC Clients
Mail & News
- Mozilla [NPL/MPL/LGPL/GPL]
- Mozilla SeaMonkey [MPL, NPL]
- MicroPlanet Gravity [BSD]
- Athea
- Mahogany
- Magic Mail Monitor 3 [GNU GPL]
Anti-Spam:
Media Players (audio)
- Zinf [GNU GPL]
- LongPlayer [GNU GPL]
- MP3Gain [GNU LGPL]
- Mixxx [GNU GPL]
- foobar2000 [Other/proprietary]
Media Players (video)
Media Players (codecs)
Networking tools
- Wireshark [GNU GPL]
- Nmap [GNU GPL]
- Show Traffic [BSD]
- daSniff [no license]
- Network Game Detect [BSD]
- Port scanner [GPL]
- ngrep [Other/Proprietary License]
- Knocker [GNU GPL]
- NetBIOS Enumerator [GNU GPL]
- OpenVPN [GNU GPL]
- Dynksys Dynamic IP Updater [GNU GPL]
- MyDyndns [GNU GPL]
- Hardscan [GNU GPL]
- tcping [GNU GPL]
- mturoute [Public Domain]
- tsb [GNU GPL]
- Scapy [GNU GPL]
- OpenRSM [GNU GPL]
Office Tools
- AbiWord [GNU GPL]
- PDFCreator [GNU GPL]
- qvPDF [GNU GPL]
- pdftk, the PDF Tool Kit [GNU GPL]
- pdfsam [???]
- Xpdf [GNU GPL]
- LyX [GNU GPL]
- LaTeX:
- WinDjView [GNU GPL]
- ganttproject [GNU GPL]
- Scribus [GNU GPL]
- Gnumeric [GNU GPL]
- MathCast [GNU GPL]
Operating Systems
Remote Access
Sciences and Math
Mathematics:
- Octave [GNU GPL]
- Scilab
- Maxima [GNU GPL]
- wxMaxima [GNU GPL]
- Yacas [GNU GPL]
- The R Project
- R Commander [GNU GPL]
- SciViews-R [GNU GPL]
- SciPy [BSD license]
- GAP [GNU GPL]
- MayaVi [BSD]
- PARI/GP [GNU GPL]
- Numerical Python [???]
- SalStat [GNU GPL]
- MacAnova [GNU GPL]
- Elmer [GNU GPL]
Biology:
- GROMACS [GNU GPL]
- GENtle [GNU GPL]
- Open Bioinformatics Foundation
- BioPython
- BioPerl
- BioJava
- BioRuby
- BioSQL/OBDA
- BioMOBY
- BioDAS
- PyMOL [Python License (CNRI Python License)]
- OpenRasMol [Other/proprietary GPL]
- Bioconductor [BSD or GPL]
- Staden [BSD]
Geographic Information Systems:
- GRASS GIS [GNU GPL]
- OpenEV [X/MIT style]
- Thuban [GNU GPL]
- Virtual Terrain Project [VTP Software Licence]
General:
Security, Privacy, Protection...
- GnuPG [GNU GPL]
- Privoxy
- Stunnel [GNU GPL]
- Hide In Picture [GNU GPL]
- SSHTools [GNU GPL]
- KeePass [BSD License]
- Password Safe [Artistic License]
- TrueCrypt [???]
Server Software
CVS:
DHCP:
DNS:
FTP servers:
Jabber servers:
Mail and News:
Webservers:
SSH-servers:
Other:
SCP (SecureCoPy) Clients
Text Editors
- Vim
- GNU Emacs [GNU GPL]
- XEmacs
- Scintilla and SciTE
- WinVi [GNU GPL]
- TeXmacs [GNU GPL]
- Notepad++ [GNU GPL]
- Notepad2 [GNU GPL]
- UniRed [GNU GPL]
- poEdit [MIT]
Utilities
- Partition Logic [GNU GPL]
- Daphne [GNU GPL]
- MD5summer [GNU GPL]
- Hasher [???]
- HovText [BSD]
- Rainlender en Rainmeter [GNU GPL]
- Bid-O-Matic [GNU GPL]
- Cygwin