Delaware · Award-winning custom software development

Web and mobile app development company in Delaware.

OpenSource Technologies (OST) is a custom software development company serving Delaware businesses, financial services operators, e-commerce companies, and the substantial population of DE-incorporated holding companies that operate elsewhere. Technology partner to startup entrepreneurs, small businesses, corporations, ad agencies, IT firms, and channel partners across Wilmington, Dover, and the broader First State.

Industries we serve in Delaware

Six core verticals across the First State.

Delaware concentrates corporate registration, financial services, and a growing technology sector around Wilmington. Our engagement model adapts to DE-specific contexts including the substantial number of DE-incorporated companies operating elsewhere.

Why Delaware businesses choose OST

First State proximity, proven delivery.

Our teams of strategists, designers, and developers serve clients around the world. With over 500 web and mobile applications and software solutions delivered, we have proven we can build software that holds up at scale.

01 · eCommerce at scale

$10B+ in transactions processed.

Our applications have processed over $10 billion in transactions. Whether you need multichannel, omnichannel, or any production-ready eCommerce stack, we have shipped it before.

02 · DE-incorporated, anywhere-operated

Software for holding companies and corporate registrants.

Many DE-incorporated companies actually operate elsewhere. We work with them regardless of where their teams sit, with familiarity for the corporate registration context unique to Delaware.

03 · Drivable proximity

60 minutes from HQ to all of DE.

Lansdale is 60 minutes from Wilmington, 90 minutes from Dover, 2 hours from Rehoboth. Same time zone, same business calendar. Senior leads attend kickoffs in person across the state where the engagement calls for it.

04 · Open source where it makes sense

Our name is OpenSource, after all.

SugarCRM, Magento for eCommerce, and many other open-source platforms we leverage to complete your mission. We do not recreate the wheel where leverage exists. We reduce your operating costs by replacing antiquated systems with smart technology.

What clients say

“His team always delivers something extraordinary, better than I could have imagined.”

Active retainer
Teksafety

“The team understood our needs, communicated clearly, and delivered with professionalism.”

CEO
Cave Day

More named reviews on our testimonials page.

Compliance and DE procurement

Built for DE state and local RFPs.

Delaware state, county, and municipal procurement teams require defensible compliance posture. Our work meets the conformance standards typically asked for in DE SLED bids.

  • Accessibility default:WCAG 2.2 AA + Section 508 conformance on every build, included in baseline scope, not as an add-on. Audit-ready documentation produced as part of the engagement.
  • DE FOIA aware:Familiar with the Delaware Freedom of Information Act and the typical records-request workflows our state and municipal clients have to honor.
  • SAM-registered:Active System for Award Management registration. UEI, NAICS codes, and CAGE code available on request to qualified procurement officers.
  • Past performance documentation:COI, key personnel resumes, and named past-performance references shareable under mutual NDA, typically within 2 business days of request.
  • Section 508 audit reports:Senior leads include a WCAG 2.2 AA Accessibility Oversight credential. We deliver third-party audit-ready accessibility documentation as part of every engagement.

Procurement officers can reach out via the contact form below to receive the full procurement packet, including capability statement and reference contacts.

Delaware-specific inquiries

Talk to a local partner.

Whether you are a DE-based business evaluating vendors, a DE-incorporated company looking for a closer-than-offshore partner, or a state procurement officer running a SLED bid evaluation, we respond within one business day.

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