Advanced Technology Group (ATG)
- Offering test vouchers for all Microsoft and CompTIA certifications. Includes information on procedure and testimonials.
- http://itexamvouchers.com/

The Katharine Gibbs School
- Prepare for the MCSE exam at this Philadelphia adult continuing education school.
- http://www.gibbspa.com/

Certification.Info
- Provides overview of a wide range of IT certifications.
- http://www.certification.info/

IT Governance, Ltd. -- ISO20000
- UK firm explains the new international IT Service Management standard, ISO20000, and provides books, tools, training and consultancy.
- http://www.itgovernance.co.uk/page.ISO20000

ITIL Certification Register
- International registry allows ITIL-certified professionals to list their contact information by certification and country.
- http://www.certification-register.org/

Exam Zone
- Offers practice test questions for a variety of certification exams.
- http://www.exam-zone.com

NSA IAM Certification and Training
- Provides training for the National Security Agency's IAM certifincation which covers a non-intrusive set of skills used improve an organization's INFOSEC posture.
- http://www.technoversity.com/nsa-iam-certification.htm

FirstTryCertify.com
- Offers practice exam questions for industry IT certifications.
- http://www.firsttrycertify.com/

U2TEST
- Offers non-vendor certificates in several computer specialties.
- http://www.u2test.com

Virtual Learning
- Offers computer training on over 400 various computer based courses.
- http://www.cbttraining.com/

CertGear Systems
- Certification resources, including practice tests, free quizzes, and study aids.
- http://www.certgear.com/

Certification Forums
- Provides free forums and certification discussions on exams and study guides.
- http://www.certforums.co.uk/forums/

MySQL Certification Program
- Official site of the MySQL Certification Program
- http://www.mysql.com/training/certification

xamsrus
- Offers free practice exams for major certifications. No registration required.
- http://xamsrus.com/generic.php?temp=home

MC MCSE
- Provides study notes for the most popular certification exams along with general advice and links to practice tests.
- http://www.mcmcse.com/

ToggIT
- Offers free study guides and exam information for Microsoft and CompTia exams.
- http://www.toggit.com

Cram Session
- Cram sheets with the key points for MCSE, Novell and A+ exams plus general information on certification.
- http://www.cramsession.com

Winstructor
- Provides video learning for MCSE 2003, CCA and Tivoli Certifications.
- http://www.winstructor.com

Whizlabs
- Provides IT skill assessment and exam preparation tools for several vendor certifications.
- http://www.whizlabs.com/

ITCertKeys
- Study guides and practice exams for most IT certifications. Includes several free demos.
- http://www.itcertkeys.com/

IT Certification FAQ
- Answers frequently asked certification questions. Provides forum for asking new questions as well as browsing past answers.
- http://www.certfaq.com

Hawthorne Institute of Technology
- Offers instructor-led training online in the Hawthorne, California, United States area.
- http://www.hawthorneit.com/Content/CertificationPage.cfm

Pass-Guaranteed
- Offers study guides for most major certifications.
- http://www.pass-guaranteed.com/

StudyExam4less.com
- Offers study guides for CompTIA and Microsoft exams. Includes free demos.
- http://www.studyexam4less.com/

ISECOM - Institute for Security and Open Methodologies
- Offers accreditation for security analysts (OPSA), security testers (OPST), and Open Source Security Testing Methodology Manual (OSSTMM) specialists (OPSS).
- http://www.isecom.org/

Vamat
- Swiss company offers vendor-generic IT certifications.
- http://www.vamat.com

Exam Force.
- Offers IT certification study software with adaptive learning systems engine. Exclusive Exam Cram content at the click of the mouse.
- http://www.examforce.com

ChannelZ
- Offers TCP/IP and OSI reference model study sheets for students.
- http://www.channelz.org/

Certz.com
- Offers step by step IT certification routes, discussion forums, and a salary calculator.
- http://www.certz.com

The Association of Certified IT Professionals (ACITP)
- Offers IT qualifications including web design, Office XP, desk top skills, programming, and computer maintenance.
- http://www.acitp.com

X-ams-R-Us
- Free practice exams for most major IT certifications.
- http://xamsrus.com/

Cert HQ
- Offers study guides for IT certifications from vendors such as Microsoft, CompTIA, Cisco, Oracle, CIW, Checkpoint and Novell.
- http://www.certhq.com

Pearson VUE
- Delivers certification and licensure exams for Microsoft, Cisco, CompTIA, IBM, Novell, NCLEX, and NASD.
- http://www.pearsonvue.com/

Certification Crazy
- IT professional shares his collection of links to free study guides, practice questions, and other resources and offers advice to help others studying for the certifications he has earned.
- http://www.certification-crazy.net

ITIL Foundation
- Offers certification for IT service managers.
- http://www.itsm-learning.com/

Nerdom Software
- Offers practice test software for the Cisco CCNA, CCNP, Microsoft 70-210, and Comptia A+ exams.
- http://www.nerdom.net

Graymark International, Inc
- Sells training kits for students interested in practicing for various certifications.
- http://graymarkint.com/

Universal Exams
- Offers audio study material for Cisco and Microsoft exams.
- http://www.universalexams.com/

TechExams.Net
- Provides free practice exams for A+, Net+, iNET+, MCSE, MCSA, CCNA, and CCDA.
- http://www.techexams.net/

Adobe Certified Expert (ACE) Study & Practice Guides
- Self-study exam aids based on objectives set by Adobe for their Photoshop CS2, Illustrator CS2, InDesign CS2, and Acrobat 8.0 Adobe Certified Expert (ACE) exams.
- http://www.examaids.com/

Elite Certify
- Offers study guides containing realistic IT exam questions to prepare the student for most industry certifications.
- http://www.elitecertify.com/

Hot Lava Software
- Offers prep software for MCSE, CCNA and A+ certification to run on a Palm OS or Pocket PC device.
- http://hotlavasoftware.com/

Certy
- Offers free online certification tests.
- http://certy.com/

University Training Services
- Offers IT training courses, some are for free.
- http://www.universitytraining.com