Linux.CertifiedProgrammer.com - A resource for programmers and administrators who are studying for the exams. - http://linux.certifiedprogrammer.com
Suncochin Linux Training - Provides courses for RHCE and SCNA track, network solutions, application development, and corporate training tool. - http://www.suncochin.com/
Linux Professional Institute - Non-profit organization offering vendor neutral certification exams. - http://www.lpi.org/
LinuxCertified.com - Linux training and certification classes for busy IT professionals - http://www.linuxcertified.com/