Software for the work you do and the ideas you have.

I'm Ricardo, the developer behind Vertex Platform Solutions. I make apps and tools for businesses, personal projects and everyday life.

Here you can see what I'm building, what each project does and where it stands. If you have an idea for something you'd like to make, I'd be glad to hear about it.

Software I've made and am building

Some of these tools started with something I wanted for myself. Others are built around a problem a business might need to solve. Explore each project to see what it does and where it stands.

Khuluma

I built Khuluma so I could speak into the apps I already use. It turns speech and audio files into text on your Mac, with a menu-bar app for dictation and a command-line tool for recordings.

Explore Khuluma
CLI installation brew install ricardo-calcina/tap/khuluma

The Mac app is built from source. See the setup.

A cobalt paper waveform beside a silver microphone
Concept illustration · local dictation

Making software for the things I do

Some of my projects start with something I want to use myself. Others start with a process I want to understand and a tool I think could make it easier.

I use this site to share the software as it takes shape, including what it does today and what I'm still working on. When there's a way to try a project, you'll find it on its page.

Explore the projects

Have an idea you'd like to talk about?

It could be a tool for your business, an app for a personal project, or something you use every day. You don't need to know the technical details. Tell me what you're thinking about and what you'd like it to do.

The person behind the projects

I'm Ricardo, a solo developer. I make software for problems I come across in my own work and for ideas I want to explore. Khuluma began as a way to dictate into the apps I already use; ProfileBooking grew from exploring how one booking system could adapt to different services.

More about me