Custom business software for companies that have outgrown spreadsheets.
We replace Excel, manual workarounds and patched-together tools with stable web applications built around your real workflow. From small internal tools to full platforms - designed, built and operated by Erseni Ltd.
Erseni Ltd · Larnaca, Cyprus · Working with SMEs across the DACH region and the EU
What we build for
We mostly build software for businesses where at least one of these problems is part of daily life:
Excel has quietly become your system of record
Pricing, stock, customer lists - and nobody knows which file is the latest.
The same data lives in five places
CRM, accounting tool, spreadsheets, paper, your team's heads.
Standard software you fight daily
You adapt your process to the tool, not the other way around.
Routine work eats your day
Copy-paste between systems, manual reminders, repeated emails.
Important information sits in someone's inbox
Customer requests, supplier confirmations, internal handoffs.
A specific case no off-the-shelf tool covers
Quoting logic, custom calculation, individual workflow.
What we build
Custom business tools
Web applications built around your specific workflow. A custom tool replaces a spreadsheet, a paper form or a workaround that has grown over years.
Internal web applications
Tools for your team, not your customers. Order handling, production, inventory, reporting, staff management.
Workflow automation
Cut out the daily copy-paste between systems. We replace the manual chain with a targeted automation.
Customer apps & e-commerce
Reservations, configurators, shops and customer portals - with your logic and your data.
SaaS & multi-tenant
Turn an internal tool into a product. Our platform powers dozens of production systems today.
Hosting, maintenance & consulting
We operate what we build. Existing systems we take over after a short review with an effort estimate.
Selected work
Three recent projects that illustrate how we work.
Einfach FiTZ
Marketing site, online shop, wedding cake configurator and full operational admin in one system.
Guat'z Essen
Public site, table reservation and back-office for a vegetarian/vegan permaculture restaurant.
ACIO
Online calculators and application flows for an independent insurance portal with 100,000+ customers.
Why Erseni
You talk to the people who actually build it
No project manager translating your business into a ticket nobody reads. The same person who scopes the work writes the code.
We say no when custom doesn't make sense
If a €30/month SaaS solves your problem, we'll tell you. We only build what's worth building.
We operate what we build
Hosting, monitoring, maintenance, small changes, the occasional 3am alert. We don't hand over code and disappear.
We've built this before
A multi-tenant framework powering production systems across hospitality, manufacturing, insurance and e-commerce. New projects start on solid ground.
About Erseni Ltd
A small, focused software company. We build tools that businesses actually run on.
Erseni Ltd was founded to build the kind of software most small and mid-sized companies actually need - and rarely get. Most businesses don't need another SaaS subscription. They need a focused tool that mirrors how they really work: their pricing rules, their stock logic, their handoff between sales and production, their specific quirks.
We work directly with the people who use the software. No layers of project management, no offshored implementation, no agency overhead. The same person who scopes the project also writes the code and maintains it in production.
We're technically strong - PHP, PostgreSQL, modern Web Components, our own multi-tenant framework powering dozens of production systems. But we talk to you in plain language, about your business - not about technology.
Let's talk about what's not working yet
You don't need a finished spec. If a process in your business annoys you, send it over. A short email, a screenshot of the Excel file, a description of the workflow - that's enough to start. We reply within one working day.