Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE stock ( shop_id number, device_id number, quantity number )
TABLE: CREATE TABLE shop ( shop_id number, shop_name text, location text, open_date text, open_year number )
TABLE: CREATE TABLE device ( device_id number, device text, carrier text, package_version text, applications text, software_platform text )

### Question ###
What are the different software platforms for devices, ordered by frequency descending?

### Accurate SQL ###

SELECT software_platform FROM device GROUP BY software_platform ORDER BY COUNT(*) DESC