Website development and systems with full control

Custom-coded websites and business systems. No templates, no monthly fees, one single payment.

Fully built in less than 7 days
Starting from £200
Limited offer for first-time clients 20% off
30 days free support after delivery

Fully built in less than 7 daysStarting from £200Limited offer for first-time clients 20% off30 days free support after delivery

[ Onmain Systems ]

Onmain Systems is our web development division. We build custom websites, business platforms, and digital infrastructure tailored to how you work.

Find out more

Screenshot of the Onmain beauty salon demo website

Web systems &digital infrastructure

Custom websites, Business platforms, Next.js

Custom websites, web applications, and business platforms built from scratch—no templates.

Screenshot of the Onmain restaurant demo website

Built on our stackNext.js, React & TypeScript

Next.js, TypeScript, React, Vercel

Custom-coded websites and web apps—no templates. Full ownership of your codebase from day one.

[ Client proof ]

5.0 stars from 103 reviews and counting.

Annemie Bester

Google

Stuck in London with major software issues, Andrei collected my laptop promptly from my hotel and 2 hours later delivered it back to me in prime working condition. His service, attitude and pleasant demeanor was a breath of fresh air. I can recommend him to anyone with tech problems.

6 months ago

Nino M

Google

Andrei, impeccable repair. Very professional and quick turnaround. Would highly recommend Onmain for any technical issues.

4 months ago

James T

Google

Onmain built our business website from scratch. Clean design, fast loading, and they explained everything clearly. Exactly what we needed—no templates, fully custom.

8 months ago

Sarah K

Google

Excellent web development service. Our booking system works flawlessly and the team was responsive throughout the project. Great value for a fully custom build.

1 year ago

Michael R

Google

Professional, knowledgeable, and efficient. Fixed my laptop issues quickly and gave honest advice. Will definitely use Onmain again.

3 months ago

Priya S

Google

Our new website went live in under two weeks. Modern stack, mobile-friendly, and we own the full codebase. Highly recommend Onmain Systems.

5 months ago

Read all on Google Maps

MainSearch AI

A new way to find the business you need

AI-powered to revolutionise the ease of connecting clients with businesses.

Starting with accurate pricing quotations for Onmain Systems.

Find out more→