We build useful systems.
RyanSoftwareDevelopment LLC develops software, technical systems, hardware concepts, and independent research. This is the public interface to the work.
Builds, not claims.
MxPrep
Aviation maintenance training software for modern FAA A&P preparation, practice, and progress.
RSD Interface
The public system for RSD: a company-first build register, research index, and portfolio layer.
Local Systems Interface
Exploring a low-friction control surface for local services, tooling, and technical infrastructure.
Separate businesses. One build culture.
RSD is structured to build and support focused companies without turning the main site into a collection of unrelated product pages. Each business gets its own identity; RSD keeps the engineering record.
- RSD-CO-001RyanSoftwareDevelopment LLC — technology, engineering, and R&D.
- RSD-CO-002MxPrep — aviation training technology and FAA A&P preparation.
Build. Test. Document.
Research entries capture questions, prototypes, and technical lessons without pretending every experiment is a product.
Useful beats impressive.
RSD exists to turn technical curiosity into working systems. The goal is not to look futuristic for its own sake. The goal is to build things that earn their place by being useful, understandable, and maintainable.
Have something worth building?
Product, engineering, partnership, and technical inquiries can start here.
Contact RSD →