GreenSQL
- An open source database command and query filter to protect databases from SQL injection attacks.
- http://www.greensql.net/

Xtradyne
- SOAP and CORBA firewall available on Windows, Linux and Solaris.
- http://www.xtradyne.com

Visonys
- Manufacturer of AirLock. Includes company and product information, white papers, and business information.
- http://www.visonys.com/

McAfee Host Intrusion Prevention
- Product information and FAQ.
- http://www.mcafee.com/us/enterprise/products/host_intrusion_prevention/

Portauthority
- Content filtering system monitors email, browser and other network traffic for confidential information.
- http://www.portauthoritytech.com

Wavenet Systems Inc.
- PineApp appliances offer anti spam solutions for small, medium and large organizations.
- http://pineapp.ca

BinarySEC
- A web application firewall using artificial intelligence engine and loaded directly as an Apache module.
- http://www.binarysec.com

Network Engines
- Provides appliance based functionality specifically for Microsoft server products. Provides overview, benefits analysis, specifications and contact details.
- http://www.networkengines.com/

GuardianBox
- Transparent filter appliance with the integration of anti-virus, firewall, anti-spam, filters, content filtering, traffic shaping and web-cache.
- http://guardianbox.com/

Deny All
- rWeb secure filtering proxy system which protects web servers by filtering out incorrectly formatted data submitted via http. Product details, company profile and contact information.
- http://www.deny-all.com/

SpamGate
- An spam and virus gateway developed for education and small business to stop spam and viruses before they impact internal mail systems.
- http://www.spamgate.us/

Armorlogic ApS
- Server based application firewall providing proactive protection of web servers and web applications by implementing a positive security model.
- http://www.armorlogic.com/

Bee Ware
- Provide a web application filtering, authentication and intrustion prevention systems.
- http://www.bee-ware.net

NetworkWorldFusion: Web application firewall review
- Head to head review of six software based web application firewalls.
- http://www.nwfusion.com/reviews/2003/0818rev2.html

Secluda Technologies
- Mail filtering firewall system to detect, evaluate, and block the sources of spam, malicious software and unwanted e-mail at the network perimeter prior to message processing.
- http://www.secluda.com/

Imperva Inc.
- Manufacturer of hardware web application and database appliances. Includes company and product information, white papers, online demo, and business information
- http://www.imperva.com/

Iron Mail
- A secure enterprise level e-mail filtering appliance that handles both inbound and outbound mail.
- http://www.bi101.net/products/solutions/ironmail/index.html

Applicure Technologies TotalShield
- Provides web server modules that combine targeted intrusion prevention, and web application firewall technologies.
- http://www.applicure.com/

Microsoft Internet Security & Acceleration Server
- ISA Server 2004 is an application-layer firewall, virtual private network, and Web cache server delivering Microsoft class security with simplified management.
- http://www.microsoft.com/isaserver/

Forum Systems - Web Services Firewall & Security Gateways
- Provides web services filtering and schema validation for XML documents as well as a wide range of options. Available as software, PCI card or appliance.
- http://www.forumsys.com/

Snort_inline
- Snort-inline is a set of open source modifications to the Snort IDS tool that drop packets that do not confirm to predefined rules. File downloads and product information.
- http://snort-inline.sourceforge.net/

Hogwash
- Open source application layer packet scrubber. Product overview, configuration advice and downloads.
- http://sourceforge.net/projects/hogwash/

NetContinuum, Inc.
- ASIC-based web application firewall products and services. Company and product information, application security threat information, press coverage and contacts.
- http://www.netcontinuum.com

AppGate
- Dynamic application level access control for both internal and external ASP's.
- http://www.appgate.com/

BalaBit IT Security Solutions
- Modular proxy firewall suite including built-in system log and graphical user interface. Includes product overviews, licensing, case studies, mailing list and support details.
- http://www.balabit.com/products/zorp/

Axiliance S.A.
- Hardware application firewall offering protection against HTTP and HTTPS based attacks with SSL acceleration support. HSM for secure storage of encryption keys available as an option. Product details, explanation of technology and benchmarking information
- http://www.axiliance.com/

Sentryware
- Product information on Hive, a hardware application layer firewall, and Vulnera, a vulnerabilities management tool. Company profile, news, partners and contact details.
- http://www.sentryware.com/

eEye Digital Security
- SecureIIS application firewall for Microsoft IIS webservers. Product information and reviews, pricing, customer testimonials and contact details.
- http://www.eeye.com/html/Products/SecureIIS/

Teros Inc
- Hardware web application firewall solution. Company and product information, press coverage, partnering program and contact details.
- http://www.teros.com/

Sanctum
- AppShield web application firewall and secure application development solutions. Product information, existing customers, partnering, on-line demonstrations and contact details.
- http://www.sanctuminc.com/

webScurity Inc.
- webApp.secure web application firewall solution. Company and product information, press articles and contact details.
- http://www.webscurity.com/