Expansion Programs International, Inc.

Expansion Programs International, Inc., doing business as Thunderstone Software, manufactures and maintains proprietary search software appliances and engines for federal agencies as a full-and-open prime contractor, competing without set-aside designation despite self-certification as a small disadvantaged business. Headquartered in Strongsville, Ohio, and structured as a partnership or limited liability partnership, Thunderstone operates a narrow product line anchored to the Thunderstone Webinator Search Appliance and Thunderstone Search Engine — specialized information retrieval solutions deployed across civilian agencies for data search and technical research support.

Thunderstone's customer base is highly fragmented across twenty-six distinct agencies with no dominant concentration. The top five customers by award count—the Department of Labor's Bureau of Labor Statistics (8 awards, $61 thousand combined potential value), the Department of Transportation's Federal Aviation Administration Headquarters (6 awards, $250 thousand), the Department of Health and Human Services' National Institute of Environmental Health Sciences (5 awards, $92 thousand), the Department of the Navy's Bureau of Naval Personnel (5 awards, $85 thousand), and the Department of the Interior's Bureau of Land Management National Office (4 awards, $34 thousand)—account for 39% of awards. By potential value, however, the GSA Federal Acquisition Service dominates with a single $2.2 million award (representing 61% of total potential value), with the FAA Headquarters, the Department of Homeland Security's U.S. Secret Service, and the FAA Technical Center following at $250 thousand, $248 thousand, and $169 thousand respectively. Thunderstone operates on the GSA Multiple Award Schedule under thirty-six task orders carrying $510 thousand in combined potential value.

Recent awards reflect a maintenance-and-support operational model. Named examples include a $42,263.70 firm fixed-price purchase order from the FAA Technical Center (Atlantic City, New Jersey, December 2025) for ERIDS Thunderstone Webinator Search Appliance annual hardware maintenance; a $17,371.20 purchase order from the Bureau of Naval Personnel (Annapolis, Maryland, April 2026) for one-year maintenance of a Thunderstone Search Appliance 1000; and a $9,400 modification to a $54,316 definitive contract with the U.S. Secret Service (Washington, DC, September 2024) to exercise the second option period for software maintenance services.

Activity has declined markedly. Thunderstone recorded one award in 2022, one in 2023, three in 2024, two in 2025, and one in 2026—a total of seventy-one awards across the full award history with combined potential value of $3.6 million and obligated dollars of $1.5 million (41% of potential). Only two awards face ultimate completion inside the next twenty-four months, representing $66 thousand in combined potential value and minimal recompete exposure. Thunderstone operates exclusively as a prime contractor with no subcontract footprint. NAICS concentration aligns with the product portfolio: Computer and Software Stores (38 awards) and Software Publishers (21 awards) dominate the category breakdown, with Information Technology Software as the leading PSC code across 27 awards.

Since 1981 Thunderstone Software has continued to develop its global reputation as provider of the world's most powerful, scalable and flexible enterprise search solutions.