File Extension SAS7BCAT File Format SAS system catalog SAS7BCAT stands for SAS system catalog. This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question is double RAID config possible? Can I use SAS HD in this server? Webshere Application server or SAS(stastical analysis system) which is one is better to start with career in an it company?