Prentzas Development Group

Projects

Everything we have published

Tap read more on any project for the full description, features, and link to the live site.

WhoCalled
Live

Phone lookup and spam protection at whocalled.xyz
WhoCalled helps you identify unknown callers. Search any phone number and see how often it was looked up, read community ratings, and check if others marked it safe, neutral, or dangerous.

There is no sign-up required. You can search instantly, read reports from real users, and add your own experience when you dealt with telemarketers, scams, or robocalls.
- Search counter per phone number
- Safety ratings and written reviews
- Share comments to warn other users
- Works on mobile and desktop
Open whocalled.xyz
Prentzas FM
Live

Internet radio streaming at prentzas.space
Prentzas FM is our live internet radio station. Listen to music around the clock, join the live chat with other listeners, request songs, and follow station updates from one place.

The site includes a streaming player, chat, request form, and history so regular listeners can stay connected to what is playing now and what played before.
- 24/7 live audio stream
- Live listener chat
- Track requests and history
- Station news and updates
Open prentzas.space

About us

Who we are

Prentzas Development Group is a small software team. WhoCalled is our main product. We also run Prentzas FM and share updates on Instagram.

Privacy first

Our tools work without forcing sign-up. Users get value on the first visit.

Community driven

Ratings, chat, and reports grow because real people contribute what they know.

Modern web stack

Fast pages, responsive layouts, and reliable hosting on every device.

Always improving

We ship updates regularly based on what users need from our products.

Jim Prentzas is the owner of Prentzas Development Group. He brings 8 years of web development experience building sites and online tools, along with hands-on knowledge in game development for interactive projects and gameplay systems.

Languages he works with

Get in touch

Questions, feedback, or partnership ideas? Email us or follow our work on Instagram.

hello@prentzas.online @prentzas.web