A boutique software house since 1995. Oren Lassman and a small team build management systems, integrations, and data solutions for businesses, organizations, and nonprofits. A living bridge between Access, Excel, and .NET and Python, cloud, and automation.
30+ years · 100+ projects · businesses, nonprofits, and organizations
our clients
Companies, organizations, and nonprofits we have worked with for years.
how we work
A clear, transparent process, from the first conversation to go-live. You see, approve, and stay involved at every step - with no surprises along the way.
services
We do not pick one stack over another. We help your business keep working with what it already has, and grow what it needs on top of it.
Business systems built from scratch around your process, where every screen and button is tailored exactly to the way you actually work.
Mobile apps for Android and iOS that connect your employees and customers directly to the system, from anywhere.
Manage customers, leads, and sales processes in one place, with reminders, tracking, and reports that move your business forward.
We take heavy Excel spreadsheets that can no longer keep up and turn them into a stable, multi-user platform.
From an old Access database buckling under the load to a modern, stable system in the cloud, without losing a single record or piece of logic.
Track inventory, suppliers, and orders in real time, with low-stock alerts and a direct link to your sales and purchasing processes.
When no off-the-shelf software fits, we build a solution tailored precisely around your unique process.
Connecting separate systems so information flows automatically, with no double entry and no human errors that cost time and money.
Scraping, pipelines, and cleaning and analyzing data from any source, turning scattered information into reports that build themselves.
Service, maintenance, and continuous improvements after launch. We do not disappear - our code keeps living with you.
We started in 1995, when software development in Israel looked completely different. Since then we have seen technologies come and go, and learned one thing: clients do not want an impressive system, they want a system that works on Tuesday morning.
Oren Lassman · Founder
Who is behind OLSI
OLSI Systems was founded in 1995 by Oren Lassman, a software engineer and entrepreneur who grew up alongside the development industry in Israel. From then until today we have been through three waves of technology and learned to build systems that keep working long after the trends fade.
We prefer to stay small. Not a software house of hundreds of employees, but a compact team of experienced people, each of whom knows our projects inside out. There is no layer of project managers standing between you and the code.
In practice, that means you talk to the person writing the code, not to a salesperson. That our response time is short. And that we take personal responsibility for what we deliver, even a year after launch.
- Oren Lassman, founder of OLSI Systems
selected work
Every project is told from the angle of the problem we solved, not the technology. The technology is just the tool.
