Open Source ePOS Software
Open source POS is free to download but expensive to run. No support, no security guarantees, and a developer bill that exceeds the cost of a commercial system. Here is the honest comparison.
- Complete POS system from £499 + VAT
- UK-based support included
- No developer or technical skills needed
The Reality of Open Source POS
Six things you discover after you download open source ePOS software and try to run a business on it.
The Hidden Cost of "Free"
Open source POS software is free to download but expensive to operate. You need a server to host it, a developer to install and configure it, ongoing maintenance to apply updates, and technical expertise to troubleshoot problems. Most businesses that try open source POS spend more in the first year than a commercial system costs.
No Support When It Breaks
Open source projects have community forums, not support teams. When your POS crashes on a Saturday night, a forum post does not fix it. You wait for volunteers to respond — maybe in hours, maybe in days. Posso provides UK-based telephone support from engineers who know your system and can fix problems immediately.
Security Update Gaps
Open source POS software relies on volunteer developers to find and patch security vulnerabilities. Patches are irregular and require manual installation. If you miss an update, your system is exposed. Posso applies security patches automatically. Your system is always running the latest, most secure version without any action from you.
Setup Takes Weeks, Not Hours
Installing open source POS means downloading source code, setting up a database, configuring networking, installing drivers for your printer and cash drawer, and testing every feature manually. A Posso system arrives pre-configured. Plug it in, connect to Wi-Fi, and you are taking orders in under two hours.
True Cost Comparison
Open source POS: server hosting £20–£50/month, developer setup £500–£2,000, ongoing maintenance £50–£100/month, zero support guarantee. Year-one cost: £1,500–£4,000+. Posso: complete system from £499 + VAT including hardware, software, installation, training, and support. The "free" option costs more.
No Developer? No POS.
Open source POS requires a developer to install, configure, customise, and maintain. If your developer leaves, gets busy, or raises their rates, you are stuck with a system nobody can fix. Posso is fully managed — updates, maintenance, and support are handled by the Posso team. You run your business; we run the technology.
Why Commercial POS Is Better Value
Spend Less Than Open Source
When you add up hosting, developer time, maintenance, and lost revenue from downtime, open source POS typically costs £1,500–£4,000 in the first year. A complete Posso system — hardware, software, installation, training, and support — starts from £499 + VAT. Better value, less risk, no technical skills needed.
Get Support When You Need It
The biggest problem with open source POS is what happens when something goes wrong. Community forums are not support teams. Posso provides UK-based telephone and remote support from engineers who understand your system. Call, explain the problem, get it fixed. That is the support model a business needs.
Stay Secure Without Effort
POS systems handle payment card data. Security is not optional. Open source POS puts the burden of security updates on you. Miss one patch and customer card data could be at risk. Posso handles all security updates automatically. Your system is PCI-compliant and always running the latest security patches.
Focus on Running Your Business
Open source POS turns you into an unpaid IT administrator. Every update, every bug, every hardware compatibility issue falls on your desk. Posso is a fully managed system. You focus on serving customers, growing revenue, and managing your team. The technology runs itself.
Open Source POS: Who It Works For (And Who It Does Not)
Open source POS works for developers who want a hobby project. If you enjoy configuring Linux servers, writing database queries, and debugging printer drivers on a Saturday afternoon, open source POS gives you full control. It is a legitimate technical project for someone with the skills and time.
It does not work for business owners who need reliability. When your restaurant is full on a Friday night and the POS freezes, you need a phone number to call — not a GitHub issue tracker. When a security vulnerability is discovered, you need an automatic patch — not a volunteer developer who may or may not fix it this month.
The Posso approach is commercial software at a fair price. From £499 + VAT, you get a complete system that is installed, configured, and supported. No developer fees. No hosting costs. No security risks. No weekends spent debugging. Just a POS system that works, backed by a team that answers the phone.
Open Source ePOS Software — Frequently Asked Questions
Get Your Free ePOS Demo Today
See how Posso can transform your restaurant or venue. Book a free, no-obligation consultation with our team and get a personalised demo of our ePOS systems, self-order kiosks, and more.
Free call — available Monday to Friday, 9am–5:30pm. Or email us anytime at info@posso.co.uk