See what we have built lately
Nine products that workOlgroup
02What we build
Six problems we solve.
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1
Selling online
A site, a catalogue, a basket, payments — and someone who will maintain them afterwards.
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2
Work that does itself
The panel that replaces a spreadsheet and five emails a day.
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3
Systems that talk to each other
Data, authentication, payments, queues. The parts nobody sees.
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4
Numbers somebody reads
A dashboard opened in the morning, not exported once a quarter.
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5
Staying on the right side of the law
WCAG 2.2 and the European Accessibility Act — before a regulator asks.
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6
Speed you can see
A slow page is charged for twice: in the search results and in the basket.
03Why us
We build projects that users love.
Since 2008 we have done one thing: written software that can be maintained afterwards. No framework that disappears next year. No thousand dependencies nobody audited. No “temporary” fix that stays for a decade.
We start with usability and speed, because those are the only two things a visitor notices immediately. We finish with documentation handed over alongside the code — including the right to take both somewhere else.
Tell us what to buildWhat we work with
- PHP
- MySQL
- PostgreSQL
- SQLite
- Node.js
- Bun
- Fastify
- Socket.io
- TypeScript
- ES modules
- Rust
- WebAssembly
- WebGL
- Three.js
- WordPress
- Docker
- nginx
- LiteSpeed
- Amazon S3
- Redis
- ClickHouse
- OAuth 2.0
- MCP
- Stripe
- WireGuard
- Python
- WCAG 2.2
- Lighthouse
04Offer
Twelve things we do to order.
The Polish edition gives each of them a page of its own: what you get, how long it takes, what the price depends on, and what we do NOT do.
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1
Websites
Design drawn for you, not bought in a pack. GDPR, responsiveness and a warranty included.
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2
Online shops
No product limit, with online payments and courier integration. Selling without leaving the house.
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3
Web applications
A company reachable from anywhere, around the clock. An e-office instead of five spreadsheets and an inbox.
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4
Mobile applications
Android and iOS. An app that is needed every day, not just installed once.
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5
Web portals
Thousands of pages, millions of records, one order to it — and an editorial team that needs no developer.
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6
Online presentations
A presentation that lives at an address, not in a 40 MB attachment.
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7
E-learning platform
Courses, tests, quizzes, certificates, and a report of who finished what.
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8
SEO
Site optimisation, Google Ads campaigns, and hard Lighthouse numbers instead of promises.
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9
APIs and integrations
Your systems stop being strangers. One API, one set of documentation, one place where things break.
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10
Digital accessibility
WCAG 2.2 and the European Accessibility Act: an audit, the fixes, and an accessibility statement you can sign.
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11
AI automations
Workflows tailored to your people — assistants that take one repetitive task off someone's plate, every day.
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12
Dashboards on dash-b
A panel built on our own dash-b, with your data — faster than starting from zero, more flexible than an off-the-shelf tool.
05Projects
Nine products running in production.
Not mockups and not portfolio slots — tools people genuinely use today. The best evidence of how we work, because each one has to work, not just look good in a screenshot.
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1
castomo
ecosystemSeven products and a platform layer beneath them, built around one job: sell more. Apart they stand alone; together they share sign-in, data, media and events.
What's inside
- One account across every product
- A shared layer for data, media and events
- Payments and billing built in from day one
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2
castomAPI
platform layerVerified data sources and platform building blocks served as one API. It takes on the unglamorous majority of every product — authentication, database, storage, events, monitoring, billing, media — so what sits above it stays thin.
What's inside
- 19 services behind one address
- A token wallet debited after every request
- Request telemetry in ClickHouse, caching and limits in Redis
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3
castomUI
website editorA website editor that generates as much as it edits. It builds components, whole pages and complete websites — with SEO treated as part of the build, not an afterthought.
What's inside
- Blocks and components that redraw themselves
- Datasets behind dynamic content, and reusable templates
- A publish step that takes a project live
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4
dash-b
dashboardsDashboard software with two audiences: people designing their own, and teams shipping a dashboard inside their product. The whole design — grid, colours, typography, tiles — is one JSON file.
What's inside
- Ready-made solution packs instead of a blank canvas
- Connects natively to castomAPI and just as happily to your own database
- An AI Studio that assembles a working app from one sentence
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5
iKonekt
CRM and communicationOne place for every conversation with a customer. Chat, a form, the phone, e-mail and a flyer handed over in the street all land in the same record, get an owner, and are worked through to the invoice.
What's inside
- Every channel of contact in one record
- From the first question to the invoice and KSeF
- Multi-tenant from the first migration
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6
dostepnosc2025.pl
digital accessibilityThe compendium on the European Accessibility Act (Directive 2019/882) and the Polish Accessibility Act of 26 April 2024 — for owners of sites, shops and digital services. With a free checker that renders the page you give it in a real browser.
What's inside
- Four languages: Polish as the source, then English, Ukrainian and German
- A free accessibility check, no account needed
- Designed as an eye chart: one ink, a measuring edge, a yellow marker
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7
wordpressplugin.pl
WordPress pluginsCustom WordPress plugins, made to order. The site is a listing for a product that does not exist yet — yours: twelve kinds as editions of one plugin card, a parameter table, and the order shown as parcel tracking.
What's inside
- Four language editions rendered from one template
- The pages are versioned — the files in the repository ARE the site
- The brief looks and behaves like a checkout
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8
boring2exciting
presentation generatorPaste any text, or drop in Word, Excel, PowerPoint, PDF and pictures. You get back one self-contained, animated HTML page that presents the same material in a way people will actually look at.
What's inside
- No account — paste and you have it
- The site speaks 99 languages
- Free on open models, PRO at €1 a page
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9
makeme
atelierTwelve makeme.* addresses and one site that opens on a different word at each of them. Made to measure rather than off the peg: you arrive with a sentence and leave with a fitting.
What's inside
- Twelve domains, one site
- The hostname decides what you see first
- Zero dependencies, no build step
06Process
Four steps. None of them a surprise.
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01
You write one sentence
One sentence about what should exist. We answer with questions, not a quote — a quote without questions is guesswork.
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02
You get a plan
Scope, price and date in writing. No “it depends”, and no line item we cannot explain.
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03
We build in the open
We work in visible steps. You see a working version before you pay for the whole thing.
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04
We ship and stay
Deployment, handover of the code and the documentation, a warranty. After that we still answer the phone.
07Numbers
Nothing rounded up.
- 500+ projects delivered sites, shops, apps and APIs since 2008
- 100+ happy clients some come back with the next project
- 18 years in business, continuously since 2008
- 25 years of experience building software
08How we look after you
Every project gets its own owner.
From the first conversation through to launch — and long after — one person owns your project. They handle communication, keep it on schedule, and explain what is happening and why, so you never have to ask.
That responsibility does not end at launch. Your project owner takes on our side of the work too, so your product's users are looked after — and you come back to us with the next project instead of looking for someone new.
The rules we don't bend
- No dependency where the platform alone will do.
- A comment explains why, never what.
- Accessibility from day one, not the week before an audit.
- The code and the documentation are yours. So is the right to leave.
09Contact
Write one sentence about what should exist.
We answer within one working day — with questions, so that a quote can mean something.
Write to us- olgroup@olgroup.pl
- Phone
- +48 501 698 988
- Address
- al. Józefa Piłsudskiego 34/248, 41-303 Dąbrowa Górnicza, Polska
Monday to Friday. Emails get answered in the evenings too.