uniCenta oPOS is an award winning, powerful, flexible, commercial-grade open source Point Of Sale

Our software helps people from all around the world run their business and save money with more and more new users discovering us every day

discover more how to & helpful videos on our youtube channel

OVER 1million
DOWNLOADS since 2010


Capterra Rank
Most Popular POS 2017 & 2018



  • Windows XP to Windows 10


  • Ubuntu, Debian, Mint + other


  • Mac OS X 10.6 and later



uniCenta oPOS open source Point Of Sale kiosk
  • Bike shops
  • Deli’s
  • Grocery
  • Pop-up Shops
  • Store-in-Store
  • Supermarkets
  • and more….


uniCenta oPOS Point Of Sale for bar cafe restaurants
  • Bars
  • Cafés
  • Hotels
  • Motels
  • Nightclubs
  • Restaurants
  • and more….


uniCenta oPOS Point Of Sale for Venues
  • Events
  • Museums
  • Parties
  • Pop-ups
  • Venues
  • Visitor attractions
  • and more….

The face of retail and hospitality is changing and legacy Point Of Sale software keeps you and your data “locked” into a system that’s just not keeping pace with what’s happening in the real world.
You find your existing POS is not up to the job, is expensive to maintain and e
very day you find that your business is slipping behind the curve.

uniCenta oPOS changes all of that. It’s powerful and it’s flexible which means it can help you “unlock” the potential of your business and take it to the next level.

Not ready to go there just yet? That’s OK. uniCenta oPOS is just as happy running as a regular Point Of Sale.

uniCenta oPOS is already feature-packed which means that for many it’s a business-ready Point Of Sale straight out-of-the-box.

Got a physical store? Got an online store? Duplicated effort?

Apart; maintaining your customers, inventory and sales means double the work.
Together; all this is immediately “connected” and a product sold in-store immediately gets updated online  for example.

Using posApps Manager You’re now a Click & Mortar business and ready to offer your customers things like Order & Collect.

connect to WooCommerce using our REST API

card payments using our posApps Manager

boost Customer engagement using Digital receipts



Your time is valuable and you want the assurance someone is there to help when you need it.

You want the latest uniCenta oPOS fixes & updates, access to our exclusive online forum and get invaluable online and downloadable hard-copy User and Developer Guides all for less than the price of a cup of coffee per week.

Sign up for our exclusive Subscriber-only support service and you get these business apps included.

Support us and you support the project!

uniCenta oPOS Point Of Sale for retail stores

uniCenta oPOS

uniCenta oPOS open source Point Of Sale Remote Order Display

Remote Order Display

WEB Server

WEB Reports

Digital Receipts



uniCenta oPOS open source Point Of Sale software is free and open source using the GNU GPL3 license. 

Read what free and open source means here

So, you don’t want to contribute to the project or need us and you’re quite happy to go it alone. That’s fine by us! Go for it!

We’re committed anyway to giving back all our work to the community where uniCenta oPOS was born.  We pass back two version releases behind the latest available to our subscribers – including all source code.

Want to trial, evaluate, review or just use uniCenta oPOS without us?
Get uniCenta oPOS – Jan 2018 UPDATE! Now version 4.3 – it’s free, in all senses of the word, and can be downloaded from our community site on Sourceforge