uniCenta oPOS is an amazingly flexible powerful commercial-grade open source Point Of Sale solution for retailers and hospitality businesses

Why use uniCenta oPOS open source Point Of Sale?

No recurring license fees
No Vendor lock-in
Install on as many terminals and locations you need


  • Bars
  • Bike shops
  • Cafés
  • Deli’s
  • Grocery
  • Homeware
  • Restaurants
  • Supermarkets
  • Visitor attractions
  • and more….


Bar + Restaurant
Deli’ + Café
Homeware + Café
Museum + Library + Clothing
Sports club + Bar + Café

some have integrated…
Access control
eCommerce site
Membership system


  • Windows

    Windows XP to Windows 10

  • Linux

    Ubuntu, Debian, Mint + other

  • Apple

    Mac OS X 10.6 and later


Scalable. Single to multi-terminal, multi-warehouse, multi-location

  • EAN, UPC & Code128 Barcodes
  • Sell by Weight/Price
  • Stock Management
  • User Security


Amusement Park to Zoo Gift Shop. Vouchers and Coupons

  • Auxiliary Products
  • Customer Accounts
  • Layaways
  • Modifiers


Cafes, Bars, Restaurants.
Basics are more than well catered for

  • Kitchen Printing
  • Reservations
  • Split bills
  • Table Management


Fast Lane | Specialist | Hospitality


uniCenta oPOS open source Point Of Sale kiosk
uniCenta oPOS Point Of Sale for retail stores
uniCenta oPOS Point Of Sale for bar cafe restaurants


Latest experimental screen – in Beta – designed for rapid sales throughput


Powerful and Customizable with all features and functionality available


Multiple Floors and each with its own user definable table layouts


People | Product | Payments


Fast Dashboard type access to all uniCenta oPOS functionality.
Includes Customers, Inventory and Sales reporting.

uniCenta oPOS open source Point Of Sale
uniCenta oPOS open source Point Of Sale inventory
uniCenta oPOS open source Point Of Sale reports


Your data. You decide.


Cloud Database

Suits multi-location businesses

Self-Hosted Database

Your own internal network

On-Machine Database

Run on the counter-top


Help your business. Help yourself.


Web Reporting

Centralised real-time analytics on any device, any browser

uniCenta oPOS open source Point Of Sale Web Reports

Order Display

Remote Order Display ideal for Click & Collect and Kitchens

uniCenta oPOS open source Point Of Sale Remote Order Display

Digital Receipts

Stay closer to your Customers. Real receipt copy and analytics


Card payments with PaymentSense for UK & Ireland

uniCenta oPOS Card Payments with PaymentSense.


Regularly updated space for customer testimonials using uniCenta oPOS. Plus we’re happy to help drive traffic to their web site.

Deli Italia, Lakewood, Colorado, USAAfter 3 years of running Clover POS I switched to the FPi/uniCenta oPOS solution because the savings of over $300 per month in card processing fees and the exceptional flexibility that uniCenta oPOS offers saves me time, money and helps me run my business better than ever before.

Robert Boffa, Owner, Deli Italia, Lakewood, Colorado, USA

TOP 12 Countries

Based on actual 2017 registered uniCenta oPOS customers













Which version is right for me?

Community version

Great if you want to go it alone and don’t need our support.
The community version will always be two main version releases behind that available to uniCenta Customers. It is great too if you want to put uniCenta oPOS through its paces.

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 Watch this interesting TEDx video if you have 10 minutes to spare.

Originally uniCenta oPOS started as a hobbyist project by founder Jack Gerrard who took over an existing but abandoned open source POS, It was quickly noticed there was a revival going on by those seeking a no-cost and reliable commercial-grade POS.
Today, thousands of bar, café, restaurant, store and countless other types of users from all around the world use uniCenta oPOS in their business.

In 2013 uniCenta oPOS received a Bossie Award as one of the Best open source applications available. Since then we have continued to improve it, add loads more features and functionality, and backed that up with support when needed

Capterra independently ranked us #4 in 2017 in their TOP 20 MOST POPULAR Point Of Sale Software.
Very proud of that. Thank you.

Get uniCenta oPOS – version 3.91.3 version 4.1 UPDATE! Now version 4.2 – it’s free, in all senses of the word, and can be downloaded from our community site on Sourceforge

Latest version

You want to get uniCenta oPOS up and running in your business as quickly as possible. Your time is valuable and you also want the assurance someone is there to help when you need it.

Beginning 2016 we launched an exclusive Subscriber-only uniCenta Customer club aimed squarely at business users. In return subscribers enjoy regular updates an online forum  professional User and Developer Guides as well as a host of other great benefits and resources.

See how uniCenta oPOS is continually getting better & better

Subscribers enjoy exclusive benefits :

  • Latest versions – Windows, Linux & Mac installers. Source code always available
  • Customer only forum – Fast access to our knowledge and expertise for your questions and issues
  • Updates – Regular fixes and enhancements
  • uniCenta oPOS User Guides – Written in-house. User friendly and concise. Downloadable for your offline use
  • Exclusive Add-ins – A growing collection of new app’s, templates and scripts to enhance your installation

All this starting from only £5 a month – that’s just $6.66 US Dollar or €5.67 euros
* USD and euro are dynamically updated exchange rates

A Subscription buys our time, skills and knowledge The app’s are still free and open source.