Open Source Equivalents

Commercial Software Category Open-Source Equivalent AntiVirus Tools (eg. Norton, McAfee) No open-source tools recommended
Use Grisoft AVG or AntiVir


Application Servers (eg. IBM WebSphere, BEA WebLogic)
Enhydra
JBoss
JOnAS
Tomcat (servlet container)
Zope

Asset Management (eg. Intuit, Peregrine, Remedy)
IRM

Audio Editing (eg. Sony Sound Forge, Syntrillium Cool Edit)
Audacity
GLAME

Backup Utilities (eg. CA ARCserve, Legato, Veritas)
Amanda
BackupPC
Bacula
Rsync

BioInformatics (multiple highly specialized vendors)
Open BioInformatics Foundation
OpenInformatics

Business Graphics (eg. Microsoft Visio)
Dia
Kivio
OpenOffice Draw
StarOffice Draw
Xfig


CD / DVD Burning (eg. Adaptec RecordNow, Roxio CD Creator)
ECLiPt Roaster
X-CD-Roast

Configuration Management (eg. IBM Rational ClearCase)
Arch
CVS
OpenCM
PRCS
RCS
Stellation
Subversion

Content Management Systems (eg. Documentum, Interwoven, Vignette) Bricolage
Drupal
eZ publish CMS
Joomla!
Lenya
Mambo
OpenCMS
opensourceCMS
PHP-Nuke
phpWebSite
Plone
PostNuke
Xaraya

CRM Applications (eg. Microsoft CRM, Siebel)
Anteil
Compiere
SugarCRM
vtiger CRM

Database Software (eg. Microsoft Access, SQL Server)
Firebird
Gaby
Ingres
Knoda
MySql
Novinyl
PostgreSQL
Qddb

Database Tools (eg. Crystal Reports, ERWin, Microsoft Access)
Agata Report
DBDesigner 4
mySiteMaker
OpenRPT
Total Rekall


Desktop Publishing (eg. Microsoft Publisher, Quark Xpress)
Scribus

Directory Servers (eg. Microsoft Active Directory)
OpenLDAP


Disk Imaging (eg. Norton Ghost)
Mondo

E-mail Applications (eg. Microsoft Outlook Express)
KMail
Mozilla and Thunderbird
Sylpheed
Ximian Evolution

E-mail List Manager
PHPlist


E-mail Servers – POP and SMTP (eg. Microsoft Exchange)
Exim
qmail
InterNetNews
Majordomo
Postfix
SendMail
SquirrelMail

E-mail Servers – IMAP Courier IMAP
Cyrus IMAP
UW IMAP

ERP and Financial Software (eg. Oracle, SAP, Intuit QuickBooks Compiere)
GNUCash
GNU Enterprise
NOLA

Open for Business
OpenMFG
SQL Ledger
Tiny ERP
TurboCASH
webERP


FAX Server (eg. Biscom) HylaFAX


File Compression (eg. PKzip, WinZip) 7-zip
Ark
bzip2
gzip

Flash Viewers (eg. Macromedia Flash) Flash for other OS’s

Forums, Blogs (Weblogs) or Bulletin Boards EasyMoblog
phpBB
Pivot
Thingamablog
WordPress
YaBB
Yet Another Forum.net

Graphics and Image Editors (eg. Adobe Illustrator, PhotoShop)
CinePaint
GIMP
ImageMagick
Inkscape
Karbon
Sodipodi

Groupware (eg. Microsoft Exchange, Lotus Notes)
dotProject
Horde
Kolab
Lucane
Mimerdesk
OpenGroupware
Open-Xchange
phpCollab
phpGroupWare
PHProjeckt
TUTOS

Help Desk (eg. BMC Remedy, FrontPage Heat, Intuit Track-It)
Bugzilla

Information Resource Manager
OneOrZero
phpSupport
php Support Tickets
RT: Request Tracker

HTML Editors (eg. DreamWeaver, FrontPage, HomeSite)
Bluefish
Mozilla Composer
Nvu
Quanta Plus

Instant Messaging (eg. AIM, MSN, Yahoo!)
Ayttm
Gaim
GnomeICU
Licq

Integrated Dev Environments (eg. Microsoft Visual Basic, Visual Studio) Anjuta
Eclipse
GLADE
GNU Compiler Collection
GNU Project Debugger
NetBeans
XEmacs

Modeling Tools (eg. IBM Rational Rose, CA AllFusion)
ArgoUML
Umbrello

Network Diagramming and Monitoring Cacti
Ethereal
Etherape
JFFNMS
Kaboodle
MRTG
ntop
RRDtool
Snort (intrusion detection)


Network Management Tools (eg. HP OpenView, Microsoft SMS)
BO2K
Cheops
Nagios
OpenNMS
Webmin

Office Productivity Suites (eg. Microsoft Office)
GNOME Office
KOffice
OpenOffice
StarOffice


Operating Systems (eg. Microsoft Windows)
freeBSD
freeDOS
Linux
NetBSD
OpenBSD
OpenSolaris (Sun)

Samba (file/print services)

PDF File Viewer and Creator (eg. Adobe Acrobat)
GhostScript
PDFCreator

Personal Financial Managers (eg. Microsoft Money, Intuit Quicken)
GNUCash
Grisbi
jGnash

Personal Information Managers (eg. Microsoft Outlook)
Aethera
KDE-PIM
Linux Organizer
TreeLine
TuxCards
Ximian Evolution

Photo Album Manager (or Photo Organizer)
digiKam

Portal Servers (eg. Microsoft Sharepoint, Plumtree, Vignette)
Gluecode (built on open source)
GridSphere
JBoss Portal
Liferay Portal
Metadot


Presentation Software (eg. Microsoft Powerpoint)
OpenOffice Impress
StarOffice Impress
Privacy (eg. Pretty Good Privacy) AxCrypt
GnuPP
GPG
TrueCrypt

Programming Languages
Perl
PHP
Python
Ruby


Project Management and Collaboration (eg. Microsoft Project)
Achievo
GanttProject
GanttPV
Mr Project
NetOffice
Open Workbench
Outreach Project Tool
Planner
TUTOS

Remote Access (eg. Symantec pcAnywhere or VPN appliances)
OpenVPN
rdesktop
Stunnel
tinc
UltraVNC
VNC – Virtual Network Computing


Security (eg. firewalls, scanners)
Firestarter (firewall)
IPCop (firewall)
Nessus (scanner)
Nikto (scanner)
Nmap (scanner)
Paros (proxy)
SmoothWall (firewall)

Spam Filters (eg. MailWasher, SpamEater)
MailScanner
POPFile
SpamAssassin
SpamBayes

Spreadsheets (eg. Microsoft Excel)
Gnumeric
OpenOffice Calc
StarOffice Calc

Terminal Server (eg. Microsoft Windows Terminal Server)
Linux Terminal Server Project

Test Tools (eg. IBM Rational, Mercury Interactive, Segue)
Apache JMeter Load Tester
JUnit Testing Framework


Web and FTP Servers (eg. Microsoft IIS)
Apache HTTP Server
FileZilla
ProFTPD
Squid Proxy and Cache
squidGuard Access Controller


Word Processors (eg. Microsoft Word)
AbiWord
OpenOffice Writer
StarOffice Writer