
Less busywork. More business.
Clients, invoices, payments, and daily work connected in one bilingual workspace.
We design and build custom software, websites, and mobile apps that simplify your work and help your business grow. From Puerto Rico and Miami to your next big idea.

Satisfied customers
100+A focused software studio for strategy, design, development, and launch. Start with the challenge. We will help you find the right solution.
All servicesFast websites and useful apps that help customers buy, book, and get things done.
↗Explore service02Simple portals, dashboards, payments, and internal tools that keep work moving.
↗Explore service03Practical automation for documents, customer support, search, and repeat tasks.
↗Explore service04Secure hosting, monitoring, maintenance, and ongoing improvements after launch.
↗Explore serviceMantuno brings clients, estimates, invoices, payments, and daily operations together in a single unified interface. Projects, tasks, time tracking, forms, notes, and documents extend the workspace on eligible plans. Designed and built by our team.
Meet MantunoDesigned and built by J.R.SOSA & CO.
Business platforms, property tools, and Caribbean games. Explore the products we create and the possibilities we can build for you.
View our workA clear collaboration, from start to finish.
We listen, challenge assumptions, and find the problem worth solving.
A clear scope. Thoughtful design. Working software you can see and shape.
Launch with confidence, then keep improving as your business grows.
We design and develop custom software, websites, web and mobile applications, customer portals, internal business systems, and workflow automation. We start with your goal and recommend a focused first version.
Yes. Mantuno is our business management platform for clients, estimates, invoices, payments, and daily operations. Building and operating our own products helps us bring practical product experience to your project.
Yes. We work in both languages with businesses in Puerto Rico, Miami, and Latin America, and can design bilingual customer experiences from the start.
The scope, integrations, and complexity determine the budget. Share what you have in mind through the quote form. We review your needs and define a clear scope before development begins.
Yes. We can review an existing website or workflow, connect tools, automate repetitive steps, and plan improvements without requiring you to start over.
Tell us what you want to build. We will help you turn the idea into a clear next step.
Start with a call or request a quote.