Loading…

Search every US federal contract opportunity on SAM.gov, and draft winning RFP responses with AI.

Solutions

Contract search AI proposal writing Bid / no-bid scoring Buyer & market intelligence Forecast & recompetes Awards & competitors Teaming & partner network State & local contracts Pipeline & CRM

Find Contracts

All contracts Closing soon Recently posted Highest value Buyer Intelligence What’s coming up Who’s winning (awards)8(a) set-asides WOSB set-asides SDVOSB set-asides HUBZone set-asides

Agency opportunities

DoD contracts VA contracts HHS contracts DHS contracts DOE contracts GSA contracts DOT contracts NASA contracts

Tools & Pricing

AI Opportunity Scan Contract Pricing Benchmark Competitor & Incumbent Lookup Company Award Profile GovCon Market Explorer Supplier & Teaming Finder AI Pursuit Analyzer NAICS Code Lookup Set-Aside Eligibility Small Business Size Standard Acquisition Threshold Guide Bid / No-Bid Scorecard Bid ROI Calculator CMMC 2.0 / SPRS Estimator HUBZone Eligibility Checker Plans & pricing

Learn

Market Reports Blog Answers (Q&A)Resources Glossary A–Z Guides Compare tools 2026 data report

Company

About Contact sales Security & trust Careers WinAContract UK BidWriter UK GovCon — AI proposals eSourcing Data Privacy Terms Refunds

Services & network

Bid & capture consulting Registration & certifications GovCon training Supplier network Teaming & partnering Data & API Reports store

WinAContract is US-based and US-hosted — AI federal contract search and proposal writing software for US government contractors. Operated by eSourcing Data Ltd.

© 2026 eSourcing Data Ltd · info@winacontract.com

NAICS 561990

Top contractors in NAICS 561990

The 251 contractors with tracked federal awards in NAICS 561990, totalling $9,744,853,689. Ranked by award value.

See live NAICS 561990 opportunities →All contractors

1LOCKHEED MARTIN CORPORATION$4,769,956,981305 awards
2RAYTHEON COMPANY$1,047,572,5273 awards
3ISOTEK SYSTEMS, LLC$912,279,9621 awards
4GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC.$340,959,4723 awards
5VERTEX MODERNIZATION AND SUSTAINMENT LLC$306,684,2486 awards
6BOOZ ALLEN HAMILTON INC$203,008,9776 awards
7LUMBEE TRIBE ENTERPRISES LLC$167,266,9681 awards
8GENERAL DYNAMICS LAND SYSTEMS INC.$131,601,2624 awards
9TRACE, INC.$110,874,38815 awards
10SIERRA NEVADA COMPANY, LLC$102,352,19811 awards
11GENERAL ATOMICS AERONAUTICAL SYSTEMS, INC.$97,996,3778 awards
12CHENEGA GLOBAL PROTECTION, LLC$79,786,66713 awards
13JOB OPTIONS, INCORPORATED$57,601,0667 awards
14ARCUS GROUP, LLC$57,437,05220 awards
15LAMAIN INDUSTRIES LLC$55,596,4778 awards
16PACARCTIC, LLC$51,612,1661 awards
17PRIDE INDUSTRIES$47,933,3988 awards
18CW RESOURCES, INC.$47,593,43410 awards
19OCEANEERING INTERNATIONAL INC$41,291,6643 awards
20COMMUNICATION METHODS, LLC$38,224,7237 awards
21CHENEGA SECURITY CALIFORNIA CORPORATION$35,471,7111 awards
22SERVTECH$33,569,7396 awards
23AEVEX AEROSPACE, LLC$32,823,6061 awards
24GALAPAGOS FEDERAL SYSTEMS LLC$28,996,4031 awards
25L3HARRIS TECHNOLOGIES INTEGRATED SYSTEMS L.P.$26,426,8971 awards
26C. J. MAHAN CONSTRUCTION COMPANY, LLC$26,378,3611 awards
27CUBIC DEFENSE APPLICATIONS, INC.$25,877,1011 awards
28CGH-GLOBAL EMERGENCY MANAGEMENT STRATEGIES LLC$25,113,8491 awards
29COMPETITIVE VETS LLC$24,684,9941 awards
30ECHELON SERVICES, LLC$24,122,2841 awards
31PONDERFUL, LLC$23,324,6323 awards
32W. HARRIS, GOVERNMENT SERVICES CONTRACTOR, INC.$22,296,4484 awards
33LEIDOS, INC.$21,339,9071 awards
34L L BROOKS ENTERPRISES INC$20,990,7964 awards
35CHECCHI AND COMPANY CONSULTING, INC.$20,547,0871 awards
36CHECKMATE GLOBAL, LLC$19,628,3126 awards
37MCCLELLAN BUSINESS PARK LLC$18,601,8162 awards
38R&R COMMISSARY SERVICES, INCORPORATED$18,107,0062 awards
39CHALLENGE UNLIMITED, INC.$16,898,4404 awards
40GOOD VOCATIONS, INC.$15,726,5213 awards
41SOURCEAMERICA$15,124,9701 awards
42DAK PROFESSIONAL SERVICES, LLC$14,650,7702 awards
43MANAGEMENT SYSTEMS INTERNATIONAL, INC.$14,147,3441 awards
44GREAT PLAINS ENTERPRISES INC$14,075,1812 awards
45GENERAL ELECTRIC COMPANY$14,065,0042 awards
46ABT GLOBAL LLC$14,021,6791 awards
47GOODWILL INDUSTRIES OF CENTRAL ALABAMA, INC.$13,645,3343 awards
48THE RIGHT 2 WORK CORPORATION$13,393,1133 awards
49TERRESTRIS, LLC$13,053,6692 awards
50CLAENE GROUP LLC$12,162,8681 awards
51BREVARD ACHIEVEMENT CENTER, INC.$11,619,5062 awards
52DIDLAKE INC$11,539,6804 awards
53ARD, INC.$11,518,1061 awards
54NETWORK ENTERPRISES INC$11,061,9821 awards
55ALARES LLC$10,233,82911 awards
56CHALLENGE ENTERPRISES OF NORTH FLORIDA, INC.$10,192,5181 awards
57MILLENNIUM HEALTH & FITNESS, INC.$9,720,1631 awards
58SERVICESOURCE INC$9,089,4283 awards
59DUNLAP GOVERNMENT SOLUTIONS, LLC$8,669,60423 awards
60STS GOVERNMENT SOLUTIONS, LLC$8,242,7361 awards