Department of Defense
- Missile Defense Agency – Doing Business
- Defense Acquisition Information
- Defense Advanced Research Projects
- Defense Information Systems Agency
- Defense Intelligence Agency
- Doing Business with Defense
- National Imagery and Mapping Agency – Select Business Opportunities Link
- Office of the Under Secretary of Defense for Acquisition and Technology
- Small Business Innovation Research (SBIR) Program
- Tri-Service Contract Solicitation Network (Army Corps of Engineers, Naval Facilities, etc.)
Defense Logistics Agency (DLA)
- Doing Business with DLA and other DLA Sites
- DESC – Defense Energy Support Center
- DSCC– Defense Supply Center Columbus
- DSCP – Defense Supply Center Philadelphia
- DSCR – Defense Supply Center Richmond
Air Force
Army
- Army Business Acquisition Website
- AMC – Army Materiel Command Business Opportunities
- AMCOM – Aviation & Missile Command – Redstone Arsenal
- ARL – Army Research Laboratory
- ARL/RDECOMAC Adelphi Contracting Opportunities
- Doing Business with ARL
- CECOM – Communications-Electronics Command
- RDECOM – Research, Development, and Engineering Command
- Business Opportunities/Acquisition Center
- JPEO-CBD Joint Program Executive Office for Chemical Biological Defense
- SMDC – Space and Missile Defense Command
- PEO STRI– Program Executive Office for Simulation, Training & Instrumentation
- TACOM – Tank-automotive and Armaments Command
- TACOM-Rock Island Procurement Network
- TACOM-Picatinny Procurement Network
- TECOM – Army Test and Evaluation Command Test Centers
- U.S. Army Aberdeen Test Center
- TRADOC – Training and Doctrine Command
- U.S. Military Academy
Navy
- Acquisition & Business Management – One Source
- NECO – Navy Electronic Commerce Online
- MSC – Military Sealift Command
- NAWCTSD – Naval Air Warfare Center Training Systems Division – Orlando
- NAVAIR – Naval Air Systems Command Business Opportunities
- NAVFAC – Naval Facilities Engineering Command Contracts Support
- NAVICP – Naval Inventory Control Point
- NAVSUP – Naval Supply Systems Command
- ONR – Office of Naval Research
- NRL – Naval Research Lab
- SPAWAR – Space & Naval Warfare System Command
- Systems Center San Diego