| Vendor | Awards | Awarded value | Top agency |
|---|---|---|---|
| Sierra Tahoe Investigations | 6 | $2.2M | Social Security Administration |
| SIERRA7, Inc. | 70 | $131M | Department of Veterans Affairs |
| Siertek, Ltd. | 20 | $32M | Department of the Air Force |
| Sigma Health Consulting, LLC | 10 | $53M | Department of Veterans Affairs |
| Sigma Information Management Corporation | 1 | $5.4M | Department of State |
| Sigmacorps Solutions LLC | 1 | $6.7M | Department of the Navy |
| Sigmatech Inc | 16 | $536M | Department of the Air Force |
| Signalscape Inc | 3 | $20M | Defense Threat Reduction Agency |
| The Signature Consulting Group, LLC | 6 | $12M | Centers for Medicare and Medicaid Services |
| Signature Science LLC | 12 | $49M | Office of Procurement Operations |
| Signature Solutions Inc | 2 | $2.2M | Department of the Army |
| Signature Wall Solutions Inc | 2 | $31K | Defense Logistics Agency |
| Signet Technologies, Inc. | 52 | $25M | Department of the Navy |
| Significance Inc | 19 | $84M | Department of the Navy |
| Sikich Cpa LLC | 8 | $11M | National Aeronautics and Space Administration |
| Silosmashers, Inc. | 3 | $9.2M | Federal Bureau of Investigation |
| Silotech Group Inc | 10 | $13M | Department of the Air Force |
| Siltek, Inc. | 1 | $4.5M | Office of the Assistant Secretary for Financial Resources |
| Silver Ships, Inc | 14 | $119M | Department of the Navy |
| Simba Chain Inc | 7 | $21M | Department of the Air Force |
| Simba Enterprises LLC | 2 | $1.9M | Department of the Air Force |
| Simetri, Inc. | 7 | $17M | Department of the Army |
| Simigon, Inc. | 1 | $750K | Department of the Air Force |
| Simio LLC | 8 | $428K | Department of the Air Force |
| Simple Technology Solutions Inc. | 8 | $27M | Departmental Offices |
| The Simple Vue LLC | 1 | $1.3M | Centers for Disease Control and Prevention |
| Simulab Corporation | 10 | $30K | Defense Logistics Agency |
| Simulation Technologies, Inc | 12 | $304M | Defense Logistics Agency |
| Simulocity LLC | 1 | $391K | National Science Foundation |
| Sinclair, Inc. | 3 | $53K | Department of the Army |
| Singer Equipment Co Inc | 1 | $121K | NY State Authorities |
| Singularity Security Group LLC | 19 | $27M | Department of the Navy |
| Sintela Inc | 3 | $1.2M | Department of the Army |
| Sirina Protection Systems Corp | 3 | $39K | Department of the Navy |
| Siris LLC | 11 | $7.3M | Department of Veterans Affairs |
| Sirius Federal LLC | 86 | $60M | Department of the Navy |
| Sita Business Systems, Inc. | 12 | $227K | Department of the Navy |
| Sitec Consulting LLC | 1 | $25K | Department of the Navy |
| Siteimprove, Inc | 17 | $397K | Texas DIR |
| Sitesource, LLC | 9 | $14M | Department of the Army |
| Six Mile, LLC | 7 | $33M | Department of the Army |
| S.j. Bashen, Inc. | 6 | $4.8M | Centers for Medicare and Medicaid Services |
| SJ Tech LLC | 5 | $13M | Department of the Navy |
| SJH Engineering PC | 27 | $68M | MTA Procurements |
| SKC, Inc. | 35 | $375K | Defense Logistics Agency |
| SKCS LLC | 4 | $23M | New York City |
| SKDCJ, Inc. | 1 | $32K | Department of Veterans Affairs |
| Skeo Solutions, Inc | 36 | $95M | Environmental Protection Agency |
| Skillsoft (US) LLC | 34 | $24M | Departmental Offices |
| Skjei Telecom, Inc. | 1 | $3.5M | National Oceanic and Atmospheric Administration |
| Sky Solutions LLC | 8 | $89M | Centers for Medicare and Medicaid Services |
| Sky Tech Services LLC | 1 | $2.2M | Internal Revenue Service |
| Skyepoint Decisions, Inc. | 1 | $3.2M | Department of State |
| Skylight Inc. | 18 | $89M | Department of the Air Force |
| Skyline Elevator Works, Inc | 8 | $38M | Department of Veterans Affairs |
| Skyline Software Systems, Inc. | 4 | $15M | Department of the Army |
| Skymark Refuelers LLC | 29 | $69M | Federal Acquisition Service |
| Skymira LLC | 3 | $354K | Bureau of Land Management |
| Skyward Dynamics Information Technology, LLC | 1 | $45M | Centers for Medicare and Medicaid Services |
| Skyward IT Solutions, LLC | 1 | $642K | Office of Procurement Operations |
| Slalom LLC | 17 | $134M | NY State Authorities |
| Slam Technical Services LLC | 6 | $2.5M | New York City |
| Slate Solutions LLC | 12 | $60M | Department of the Army |
| Slice Engineering LLC | 1 | $112 | Department of the Navy |
| SLM Contract Furniture, Inc. | 35 | $3.2M | Department of the Navy |
| Small Business Consulting Corporation | 7 | $51M | Department of the Air Force |
| Smarthost Design Technologies LLC | 1 | $1.3M | Department of the Air Force |
| Smartnet, Inc. | 25 | $1.5M | Department of the Air Force |
| Smartprocure Fedmine, LLC | 4 | $2.4M | Department of Veterans Affairs |
| Smartronix, LLC | 20 | $2.0B | Department of the Navy |
| Smiths Detection Inc. | 188 | $1.1B | Office of Procurement Operations |
| Smyth Industries Inc. | 1 | $68K | Department of the Air Force |
| Sna International LLC | 21 | $92M | Defense Health Agency |
| Sna Software LLC | 1 | $368K | Department of the Air Force |
| Snap, Inc | 32 | $28M | U.S. Immigration and Customs Enforcement |
| Snapit Solutions LLC | 29 | $12M | Office of the Secretary |
| SNF, Inc. | 4 | $820K | Forest Service |
| Sno Corp. | 2 | $1.2M | Department of Veterans Affairs |
| Snowbird Agility, Inc. | 2 | $4.0M | Department of Veterans Affairs |
| Snowbird Management & Development Services LLC | 2 | $622K | National Institutes of Health |
| So-Low Environmental Equipment, Co | 9 | $176K | Department of Veterans Affairs |
| Soaring Software Solutions, Inc. | 22 | $1.4M | Department of the Air Force |
| Socha, LLC | 6 | $76M | Agency for International Development |
| Social & Scientific Systems, Inc. | 39 | $129M | National Institutes of Health |
| Social Impact Inc | 11 | $12M | Millennium Challenge Corporation |
| Social Policy Research Associates Inc. | 5 | $1.3M | San Francisco |
| Social Solutions International, Inc. | 4 | $336M | Agency for International Development |
| Sofar Ocean Technologies, Inc. | 3 | $6.0M | Department of the Navy |
| SOFITC3, LLC | 5 | $12M | Office of Procurement Operations |
| Soft Tech Consulting, Inc. | 8 | $56M | Defense Logistics Agency |
| Softact Solutions LLC | 2 | $1.7M | U.S. Special Operations Command |
| Softchoice Corporation | 26 | $608K | Texas DIR |
| Softdev Incorporated | 2 | $938K | Centers for Medicare and Medicaid Services |
| Softek International | 7 | $3.6M | New York City |
| Softrams LLC | 14 | $495M | Centers for Medicare and Medicaid Services |
| Softthink Solutions, Inc. | 17 | $1.7M | Federal Acquisition Service |
| Software Consultants Inc | 1 | $4.4M | National Institutes of Health |
| Software Information Resource Corp. | 990 | $189M | Department of the Navy |
| Softwright, LLC | 1 | $2K | Department of the Navy |
| Sofware LLC | 3 | $3.0M | 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.