Where can I find a list of products that are SIF Certified?

The list of all products currently available within the educational marketplace that have been SIF Certified can be found here: https://data.a4l.org/sif-certification-registry/ 

SIF Certification provides a level of quality assurance for both the school/district/end user and the vendor that the product has been tested and conforms to the stated product standard. 

Any product listed on external sources as ‘SIF-Compliant’ does not indicate the same level of quality assurance and testing and cannot be guaranteed to provide the correct/required level of interoperability.