Top API & Integration Development Companies in Pittsburgh, PA

We ranked 3 API and integration developers in and around Pittsburgh, PA on client reviews, how many are verified, service focus and profile completeness. Includes companies in nearby Moon Township and Youngwood. Updated October 2026. How rankings work

Specialists who connect the tools a business already uses, build APIs and automate the data flowing between systems.

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  1. Youngwood, PA team building custom business software, mobile apps and QuickBooks and system integrations, with all development done locally.

    No reviews yet

    Youngwood, PA

    • Custom Software Development
    • API & Integration Development
    • Mobile App Development
  2. Veteran-owned Pittsburgh-area software company that modernizes legacy systems, builds custom applications and maintains them, with no offshoring.

    No reviews yet

    Moon Township, PA

    • Custom Software Development
    • Web Development
    • API & Integration Development
  3. Pittsburgh software firm building custom web, desktop and mobile applications on fixed-fee, fixed-timeline contracts for businesses and government.

    No reviews yet

    Pittsburgh, PA

    • Custom Software Development
    • Mobile App Development
    • Web Development

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