| Vendor | Awards | Awarded value | Top agency |
|---|---|---|---|
| Silverton Avalanche School | 4 | $489K | U.S. Special Operations Command |
| Silvus Technologies, Inc. | 5 | $2.5M | Department of the Air Force |
| Sim Sanitation Inc | 8 | $773K | Department of the Air Force |
| SIM (Society for Information Management) | 4 | $933 | Oregon State Treasury |
| Simantech Inc. | 3 | $78K | MTA Procurements |
| Simba Chain Inc | 7 | $21M | Department of the Air Force |
| Simbio USA Inc. | 49 | $12M | New York City |
| Simco Electronics | 4 | $36K | Department of the Navy |
| Simcom International Inc | 5 | $118K | Federal Aviation Administration |
| Simetri, Inc. | 7 | $17M | Department of the Army |
| Simfer Precision Machine Co | 4 | $41K | Defense Logistics Agency |
| Simi Components, Inc. | 59 | $188K | Defense Logistics Agency |
| Simio LLC | 5 | $328K | Department of the Air Force |
| Simmec Training Solutions | 16 | $3.5M | Department of the Air Force |
| Simmonds Precision Products Inc | 209 | $108M | Defense Logistics Agency |
| Simmons & Golden Security LLC | 16 | $126M | Office of Procurement Operations |
| Simmons Farm Raised Catfish Inc | 9 | $11M | Agricultural Marketing Service |
| Simon Contractors | 3 | $6.6M | Department of the Air Force |
| Simon Paschal PLLC | 3 | $928 | City of Mesquite |
| Simonds Machinery Co | 7 | $188K | San Francisco |
| Simons Contracting Co | 7 | $5.4M | City of Richmond |
| Simpat Tech, LLC | 3 | $79K | Texas DIR |
| Simple Good | 3 | $110K | City of Chicago |
| Simple Technology Solutions Inc. | 6 | $19M | Departmental Offices |
| Simplesense Inc | 3 | $1.8M | Department of the Air Force |
| Simplified Safety Inc | 3 | $52K | MTA Procurements |
| Simplifile LC | 24 | $3K | Offices, Boards and Divisions |
| Simplify Compliance, LLC | 3 | $694K | Department of the Army |
| Simplot Livestock Co | 3 | $12M | Bureau of Land Management |
| Simply Bits, L.l.c. | 46 | $288K | Department of the Air Force |
| Simply Green Solutions Inc | 15 | $12K | City of Los Angeles Controller |
| Simpson and Brown, Inc. | 3 | $10M | MTA Procurements |
| Simpson Street Development Association Inc. | 5 | $9.5M | New York City |
| Sims Enterprises LLC | 19 | $103K | Defense Logistics Agency |
| Sims Pump Valve Co, Inc | 41 | $3.3M | Department of the Navy |
| Simsmetal East, LLC | 3 | $16M | MTA Procurements |
| Simtech, Inc | 13 | $4.7M | Defense Logistics Agency |
| Simulab Corporation | 3 | $9K | Defense Logistics Agency |
| Simulation Technologies, Inc | 9 | $304M | Defense Logistics Agency |
| Simventions Inc | 25 | $457M | Department of the Navy |
| Simwerx Inc. | 3 | $105K | Department of the Air Force |
| Simx, Inc | 10 | $1.5M | Department of the Air Force |
| Sinai Community Institute, Inc. | 18 | $9.3M | City of Chicago |
| Sinai Health System | 18 | $6.8M | City of Chicago |
| Sincerus Global Solutions Inc. | 31 | $79M | Department of State |
| Sinclair Bio Resources, LLC | 3 | $52K | Defense Health Agency |
| Sinclair General Engineering CNSTR Inc | 5 | $4.5M | San Francisco |
| Sindongyang Elevator Co.,ltd | 53 | $3.6M | Department of the Army |
| Sinew Management Group LLC | 5 | $12M | Department of the Army |
| Singh & Associates, Inc. | 5 | $11M | City of Chicago |
| Singh Brothers Enterprises, LLC | 9 | $31K | Department of the Navy |
| Single Room Occupancy Housing Corp | 10 | $65K | City of Los Angeles Controller |
| Single Source Welding LLC | 4 | $193K | Department of Veterans Affairs |
| Singularity Security Group LLC | 17 | $27M | Department of the Navy |
| Sinoasia B&R Insurance Company Joint Stock Company | 37 | $4.7M | Department of State |
| Sinon'S Farm, Inc | 4 | $134K | Federal Prison System / Bureau of Prisons |
| Sintel Satellite Services Inc | 10 | $2.8M | Defense Information Systems Agency |
| Sintela Inc | 3 | $1.2M | Department of the Army |
| Sioux City Nvi, L.l.c | 9 | $62K | Department of the Army |
| Sioux Falls My Place, LLC | 3 | $270K | Department of the Army |
| Sirina Protection Systems Corp | 3 | $39K | Department of the Navy |
| Siris LLC | 7 | $6.0M | Department of Veterans Affairs |
| Sirius Federal LLC | 70 | $65M | Department of the Navy |
| Sirna & Sons, Inc | 8 | $625K | Federal Prison System / Bureau of Prisons |
| Sirona Dental, Inc. | 73 | $4.2M | Defense Logistics Agency |
| Sirsi Corporation | 26 | $1.6M | Department of the Navy |
| Sirtex Medical Inc | 7 | $1.7M | Department of Veterans Affairs |
| Sisa Vida SA Seguro de Personas | 24 | $3.1M | Department of State |
| Siskiyou Biosurvey LLC | 7 | $3.2M | Forest Service |
| Sissco | 24 | $15M | MTA Procurements |
| Sissco / Permadur Industries | 9 | $1.6M | MTA Procurements |
| Sistema Technologies, Inc. | 89 | $1.6M | Texas DIR |
| Sisters J&J, Inc | 174 | $209K | Defense Logistics Agency |
| Sisters of Mary of the Presentation Long Term Care | 6 | $8.3M | Department of Veterans Affairs |
| Sisters One, Inc. | 258 | $94K | Defense Logistics Agency |
| Sita Business Systems, Inc. | 7 | $202K | Department of the Air Force |
| SITA Infor Networking Computing USA Inc. | 3 | $22M | San Francisco |
| S.i.t.e. Enterprise LLC | 3 | $53K | Forest Service |
| Site Intelligence Group | 6 | $1.2M | MTA Procurements |
| Site Work Solutions | 3 | $5.3M | Department of the Army |
| Sitecore USA Inc | 3 | $1.3M | NY State Authorities |
| Siteimprove, Inc | 11 | $355K | Department of Energy |
| Sitemaster Inc | 12 | $8.1M | U.S. Coast Guard |
| Siteone Landscape Supply | 4 | $19K | City of Los Angeles Controller |
| Siteone Landscape Supply Holding, LLC | 11 | $4K | City of Mesquite |
| Sitesafe Security | 4 | $2K | City-Parish of Baton Rouge |
| Sitesource, LLC | 7 | $12M | Department of the Army |
| Sitta, Paige & Associates, Inc. | 7 | $154K | Department of the Navy |
| Sius Target Systems USA Inc | 4 | $131K | Department of the Army |
| Sive Paget & Riesel, P.C. | 3 | $16M | MTA Procurements |
| Six Corners Association | 3 | $100K | City of Chicago |
| Six Maritime, Inc. | 4 | $1.3M | U.S. Special Operations Command |
| Six Mile, LLC | 7 | $33M | Department of the Army |
| Six-Nations Inc | 4 | $3.0M | Department of the Navy |
| Sizewise Rentals, L.l.c. | 39 | $18M | Department of Veterans Affairs |
| S.j. Bashen, Inc. | 6 | $4.7M | Centers for Medicare and Medicaid Services |
| SJ Innovations LLC | 9 | $19M | Federal Aviation Administration |
| S.j. Smith Co., Inc | 7 | $6.4M | Department of the Army |
| SJ Tech LLC | 5 | $5.3M | Department of the Navy |
| Sjd&B, Inc | 14 | $13M | Department of the Air Force |
Vendor totals add up the award records RFPFinder holds: federal contract awards from USAspending.gov for the agencies and codes behind open notices, and state and local awards from open-data contract registers and purchase-order files. They are not a vendor's complete government revenue, and a register that lists a contract ceiling or repeats a contract can overstate spend. Names are grouped across spellings ("Corp" and "Corporation"); each award links to its source record. Subcontracts are prime contractors' subaward reports on USAspending.gov for the prime awards behind the same agencies and codes, and GSA Schedule contracts come from GSA eLibrary's MAS contractor list; both are matched to vendors by name.