| Word | Description |
| SEED | Standared for the Exchange of Earthquake Data [SEED] is a digital earthquake data format consisting of "blockettes" of header and binary data. |
| SeismiQuery | SeismiQuery is a set of pre-formatted database queries that allow users to access data and information stored in the DMC Oracle database. Read more |
| SPUD | The Searchable Product Depository (SPUD) is the IRIS DMC's data product management system. |
| SPYDER | SPYDER® is IRIS DMC's near-real-time data retrieval system. SPYDER® data is not QCed but is available almost immediately after an event. |
