Top Custom Software Development Companies in Philadelphia, PA
We ranked 10 custom software development companies in and around Philadelphia, PA on client reviews, how many are verified, service focus and profile completeness. Includes companies in nearby Wilmington, DE, King of Prussia, Newtown Square, Conshohocken and 1 other city. Updated October 2026. How rankings work
Partners that build software around how a business actually works, often replacing spreadsheets and a patchwork of subscriptions with one system the company owns.
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Philadelphia civic tech consultancy building open-source transit data infrastructure, pipelines and analytics for public transit agencies and DOTs.
No reviews yet
Philadelphia, PA
- Custom Software Development
- API & Integration Development
- Team
- 1-9 people
Philadelphia Ruby on Rails consultancy that builds features, upgrades, maintains and rescues Rails applications for startups and product teams.
No reviews yet
Philadelphia, PA
- Custom Software Development
- Web Development
Software consultancy just north of Philadelphia building custom cloud applications, data platforms and AI agents, with healthcare and gaming expertise.
No reviews yet
Wyncote, PA
- Custom Software Development
- AI & Automation
- Mobile App Development
Philadelphia-area agency building SaaS products, custom web and mobile apps with Laravel and Vue.js, using US and Latin American engineers.
No reviews yet
Newtown Square, PA
- Custom Software Development
- Web Development
- Mobile App Development
King of Prussia software firm designing and building custom web, mobile and desktop apps, APIs and Umbraco websites for businesses.
No reviews yet
King of Prussia, PA
- Custom Software Development
- Web Development
- Mobile App Development
Philadelphia-headquartered digital product agency designing and building websites, apps and custom software for associations, healthcare and manufacturers.
No reviews yet
Philadelphia, PA
- Web Development
- Custom Software Development
- Mobile App Development
Philadelphia web design and development agency building Drupal and WordPress sites and custom web applications for mission-driven organizations.
No reviews yet
Philadelphia, PA
- Web Development
- Custom Software Development
- UX/UI Design
Philadelphia health tech studio that validates, designs and builds digital health products and AI features for health tech companies and providers.
No reviews yet
Philadelphia, PA
- Product Design & Development
- Custom Software Development
- AI & Automation
Wilmington, Delaware IT company providing managed IT, cybersecurity, application development and VoIP to Mid-Atlantic businesses and governments.
No reviews yet
Wilmington, DE
- Managed IT Services
- Custom Software Development
- Cybersecurity
Philadelphia design and engineering consultancy that researches, designs, builds and modernizes complex business applications for large organizations.
No reviews yet
Philadelphia, PA
- Product Design & Development
- UX/UI Design
- Custom Software Development
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