OpenCart Development, Upgrades and Support by Certified Experts
AnOpenCartExpert is an official OpenCart Partner. We build new stores, upgrade existing ones to the latest version, fix bugs, and provide reliable ongoing support for businesses worldwide.
Free 30-minute consultation with a fixed-price quote and no obligation
"Peersol have been fundamental in the success of our revised website and other new projects. Professional and thorough all through the process. Support is always available and I trust them to provide excellent results."
Talk to an OpenCart expert
Fill in the form below and we will review your store and get back to you with a clear quote.
Three things we specialise in
As an official OpenCart Partner with 10+ years and 150+ stores delivered, this is where we're strongest.
OpenCart Version Upgrades
Running an outdated OpenCart store creates security risks, breaks extensions, and limits your features. We safely upgrade stores from version 1.5, 2.x and 3.x to the latest OpenCart 4.x. Your data, extensions, and customisations are fully migrated and tested on a staging environment before anything changes on your live store.
Ongoing OpenCart Support
Many agencies hand over the project and move on. We stay involved. Our monthly support plans keep your OpenCart store secure and performing well long after launch. This includes security patches, core updates, extension maintenance, performance checks, and priority code fixes from a team that already knows your store.
Custom OpenCart Extension Development
When no existing extension does exactly what you need, we build one from scratch. We develop ERP integrations, custom pricing rules, marketplace feeds, and bespoke checkout flows. Everything is built to OpenCart coding standards so it survives upgrades and works without conflicts alongside your other extensions.
OpenCart services we provide
Everything your store needs, from the initial build through to long-term maintenance and support.
Store Development
Custom OpenCart stores built to your exact requirements. Product catalogue, checkout, payment gateways, and shipping are all configured and tested before launch.
Version Upgrades
Upgrade to the latest OpenCart safely. We migrate your data, extensions, and customisations with full testing on staging before touching the live store.
Code Maintenance and Fixes
We diagnose and resolve checkout errors, extension conflicts, layout issues, and slow load times. Every change comes with a clear explanation of what was wrong and what we updated.
Theme Customisation
We adjust layouts, colours, typography, and mobile responsiveness to match your brand exactly, without touching core OpenCart files.
Extension Development
Custom extensions for functionality that does not exist off the shelf. We build everything from simple product widgets to full ERP and warehouse integrations, following OpenCart coding standards.
Ongoing Support
Monthly retainers covering security patches, updates, and priority code fixes. We respond within one business day and document every change we make.
OpenCart stores we've built & maintained
Real client projects across fashion, e-commerce, entertainment, sports, and medical sectors.
Urban Retreat: Premium Health and Beauty Store
A premium health and beauty destination built on OpenCart with a full product catalogue, online booking integration, and a seamless checkout experience.
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A&H Brass: Cabinet Hardware Retail Store
A & H Brass began as a retail shop based in Harrow, north-west London. Full OpenCart store with extensive product catalogue and UK shipping.
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Orlando Attraction Tickets: Most Widely Used Ticketing Web App
OrlandoAttractions.com offers unbeatable deals on Orlando Attraction Tickets, along with the latest news, videos and information from the world's most popular family destinations.
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Minko's Macs: Premium Pre-Owned Hardware Retailer
An OpenCart store specialising in pre-owned computers and hardware, with a clean product catalogue, detailed specs per listing, and a smooth checkout experience.
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Muaythai Boxing Ltd: Premium Thai Sports Brand
Muaythai-Boxing Ltd (MTB) was established over 13 years ago with the aim to make Thailand's best quality brands accessible worldwide.
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Medisource: Regulated European B2B Distribution Portal
A high-trust B2B e-commerce platform for a regulated European distributor. Built to strict compliance standards with secure account management, product catalogues, and controlled access.
Visit storeWhat our clients say
Honest feedback from businesses we've worked with.
"Peersol have been fundamental in the success of our revised website and other new projects. From understanding the brief through to fulfilment they have been professional and thorough all through the process. Support is always available and I trust them to provide excellent results."
"Peersol is our go-to team for turning our digital dreams into reality. They don't just build applications; they decode our business challenges and engineer solutions that exceed expectations. With Peersol, we've found a trusted partner who consistently elevates our projects to new heights."
Ready to get your OpenCart store in good hands?
Tell us what you need. Whether it is a code fix, a version upgrade, or a full store build, we will give you a clear quote and timeline within one business day.
Common questions
Answers to what most clients ask before getting started.
Do you work with all versions of OpenCart?
Yes. We work with OpenCart 2.x, 3.x, and 4.x. Most new development is done on OpenCart 4.x, and we can upgrade stores from older versions while preserving data, extensions, and customisations. Upgrades are always tested on staging first.
How long does a typical OpenCart project take?
A standard store build takes between three and six weeks depending on scope. Code fixes and small changes are typically handled within two to five business days. Version upgrades depend on how many extensions need updating. We give a firm timeline after reviewing your store. Time and cost are always fixed upfront.
What does OpenCart development cost?
Code maintenance and small tasks start from £250. New store builds typically range from £1,500 to £8,000 depending on features and integrations. Version upgrades start from £500. We provide fixed-price quotes so you know the exact cost before we start work.
Can you integrate OpenCart with our ERP, CRM, or marketplace?
Yes. We've built integrations with SAGE, Xero, QuickBooks, Amazon, eBay, Linnworks, and bespoke warehouse systems. These are built as proper OpenCart extensions following the platform's MVC architecture, so they survive core updates.
Do you offer ongoing support after delivery?
Yes. Monthly support retainers cover security patches, OpenCart updates, extension maintenance, and priority code fixes. We also work on a per-ticket basis if you prefer not to commit to a retainer. Everything is documented so you always know what changed.
Why choose Peersol as your OpenCart partner?
We're an Official OpenCart Partner focused on OpenCart and not a generalist agency spread across a dozen different platforms. You work directly with the developer on your project, not through account managers. We've delivered over 150 OpenCart projects since 2014 for clients worldwide.
Let's talk about your store.
Tell us what you need and we'll come back with a clear quote and timeline within one business day.
Send us a message
Describe your project and we'll reply with a quote.