Web & Mobile App Development In Philadelphia And Beyond

OpenSource Technologies (OST) is a web and mobile application development company in Pennsylvania. Our applications are guided by client input, consumer needs, and industry-leading experience. Plus, we have assembled an award-winning team of developers, designers, and creators that serve every client from our Lansdale, PA office.

At OST, we develop award-winning software, Android, and iOS apps with a focus on user experience, lean methodology, and agile/scrum development. We build and refine client ideas and ensure a quality product using a strategic approach.  The end result is always reached on time with an eye on return on investment (ROI), total transparency throughout the process, and as a true partner, not a vendor. If you are looking to hire a custom software development company in Pennsylvania, we are your go-to software app development company.

In & Around Philly

Mobile App Development Company

OST is a software app development company that creates apps and technologies with innovative designs that cater to each client’s specific needs. We use a methodical and strategic approach to planning a project course and organizing client ideas.

From top to bottom, every OST app is thoroughly vetted with regard to design, functionality, and market appeal.  Clients always come to us with ideas, and with the help of our experts in workflow and UI/UX designers, OST quickly turns ideas into reality. We’ve proven our ability to do so with large enterprises such as KDD (Kuwait Danish Dairy), mid-sized organizations like 27th Investment, and startups like Instant Kosher and Tattoo Studio applications.

Do you already have an App and need ideas to improve and enhance it?  When ScholarVets Network came to OST, they were looking for a redesigned mobile app to keep users engaged. We ultimately redesigned the look and feel and deployed an entirely new set of mobile-friendly features to improve usability.

Mobile App Development Company
Mobile App Development Company

Expert in Custom Development

Custom software development is how we approach designing, creating, deploying, and maintaining software for a specific set of users or functions. We have experience with companies and small-scale businesses.

We developed Internal software for 27th Investment to manage their investments, leads, and events. Plus, we helped streamline Team Pex Logistics by developing a package, driver, and vehicle management program based on their specific workflows.

Our software moves through familiar steps including requirement gathering, code construction, testing, and deployment. We apply methods, such as Agile, Scrum, or Rapid Application Development to the software projects we are involved in.

Work associated with custom software development includes customization, modernization, and application management. Our experience, expertise, and customer-centric culture make us stand out from other web development companies in Philadelphia.

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Hire App Designer Near You

Looking to hire a custom software development company in Pennsylvania? OST is closer to you than you think! We are one of the best web development companies in Philadelphia. With us, you are sure of the best app designers.

App design involves the creation of a unique identity for a product or business. Our workflow experts and designers work with the client to understand the business personality, target market, and target audience. We brainstorm the facts and build the design of the App.

We provide high-end software app development in Pennsylvania. We pay close attention to the details when brainstorming or working with new ideas. The workflow expert listens carefully to what the client wants, and those ideas are edited, expanded, and presented to the client. The designer works from a brief stay within the budget, and works within the client’s deadline.

We worked on the Wesleyan user experience and increased traffic of OLIOLI after launching a new look.


OST Agency

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OST Agency

How We Drive You

OST Agency

How OST Can Help You


Clutch is a third party testimonial capture platform. Our clients agree to a 15 minutes interview with clutch directly. What is said about our Quality, Timeline and Pricing is exactly what our client wants to say about Opensource Technologies and why they are willing to refer.

Software App Development in Pennsylvania
Software App Development Company

Hire Software Developer Near You

Founded in 2009, and highlighting 10+ years of experience, OST is a mobile app and custom software development company headquartered in Lansdale, Pennsylvania (USA). And we offer the best software app development in Pennsylvania.

OST specializes in embedded software, the Internet of Things, mobile applications, custom software development, software engineering for cloud platforms, and security programming. Business consulting, information technology, and outsourcing services are available to local clients and global customers through the local OST team and their specialists around the world.