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MAINSPRING, INC.

UEI: GHSWFBNZ5EJ4CAGE: 05DE4

MAINSPRING, INC. is a federal contractor, registered under UEI GHSWFBNZ5EJ4 and CAGE code 05DE4. It has been awarded $14,761,803 in federal contracts. Primary work spans Computer Systems Design Services, Other Computer Related Services, and Custom Computer Programming Services. Top awarding agencies include General Services Administration (gsa), Department Of Defense, and Department Of The Treasury.

Contact Information

Registration and classification details

Registration

UEI Code

GHSWFBNZ5EJ4

CAGE Code

05DE4

Entity Structure

Corporate Entity (Not Tax Exempt)

Established

N/A

Business Classifications

For Profit OrganizationSubchapter S Corporation

NAICS Codes

541511Custom Computer Programming Services
541512Computer Systems Design Services
541513Computer Facilities Management Services
541519Other Computer Related Services(Primary)
561320Temporary Help Services
+1 more

Federal Contracting Overview

Award totals, agency breakdown, NAICS distribution, and geographic footprint.

AI Capability Profile

MainSpring, Inc. specializes in custom FileMaker database development, licensing, and ongoing system maintenance for federal agencies, with deep expertise in Claris FileMaker Platform technologies. The company delivers end-to-end solutions including server-hosted database design, user seat licensing...

MainSpring, Inc. specializes in custom FileMaker database development, licensing, and ongoing system maintenance for federal agencies, with deep expertise in Claris FileMaker Platform technologies. The company delivers end-to-end solutions including server-hosted database design, user seat licensing procurement, and long-term support for mission-critical applications built on FileMaker Pro and FileMaker Server. Their technical focus centers on low-code application development, secure data management, and scalable user provisioning—particularly for agencies requiring tailored, non-traditional software solutions that integrate seamlessly with existing infrastructure. MainSpring’s key differentiator lies in its niche proficiency with FileMaker Platinum Partner services, enabling rapid deployment of secure, compliant, and highly functional database systems without reliance on enterprise-scale platforms. The contractor maintains consistent relationships with the Department of Health and Human Services, the Department of Agriculture, and the Department of the Interior, primarily supporting data collection, inventory tracking, and operational workflow automation through FileMaker-based applications. These engagements reflect a pattern of recurring, renewal-driven contracts focused on sustaining legacy systems that remain vital to field operations and internal reporting. MainSpring’s primary industry focus is under NAICS 541511 (Custom Computer Programming Services), where they deliver bespoke software solutions using the Claris FileMaker ecosystem—an agile, client-server platform favored in federal environments for its rapid development cycle and minimal infrastructure overhead. Their market positioning is that of a specialized vendor serving agencies needing flexible, non-cloud-native database tools to support field staff, compliance reporting, and asset management. As a small business structured as a 2L entity based in Frederick, Maryland, MainSpring operates without federal certifications but holds a focused, high-value niche in government IT. Their geographic presence is centered on supporting federal clients across the Washington D.C. metro region and beyond, with a reputation for reliable, long-term support of FileMaker-based systems in mission-sensitive environments.

Key Performance Metrics

Awards Count

135

All time

Active

2

Currently performing

Completed

133

Past period of performance

Total Awards

All time

Contracts

Prime · all time

Subcontracts

Sub · all time

Grants

Prime · all time

Subgrants

Sub · all time

Award Analytics & Distribution

Awards by Agency
Awards by NAICS
Export
Awards by Agency Over Time
Awards by Place of Performance

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NAICS: 541511
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RFP828 - Interactive Web Mapping and Dashboard Application Development
Solicitation # PE-29016-NONST-2027-000000075
The Atlanta Regional Commission (ARC) is soliciting proposals for the development and hosting of three interactive web mapping and analysis dashboard applications for the Atlanta Region, including a specific Housing Dashboard utilizing Census ACS, HUD, and ARC housing permit data. The contract is anticipated to be awarded in December 2026, with services commencing immediately upon execution. Evaluation of proposals will be based on technical specifications (50%), related experience and qualifications (30%), delivery schedule and methodology (10%), and the proposed budget (10%). Interested parties must complete site registration and application approval on the ARC procurement portal prior to submitting a proposal. All submissions must be combined into a single electronic file in PDF or Word format and received by November 6, 2026, at 4:00 P.M. EST. Required documentation includes a written proposal not exceeding 10 pages, a detailed budget following Exhibit B, and the Contractor Affidavit and Information in Exhibit C. Awardees must comply with Georgia state laws regarding insurance and the Georgia Security and Immigration Compliance Act, as well as federal Title VI and Equal Employment Opportunity standards. The contract includes a fifteen-day notice period for termination for convenience and requires the consultant to correct any work errors at their own expense.
Atlanta Regional Commission

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