Bespoke web application development for UK businesses.
What bespoke actually means at Exline Labs.
A lot of software sold as bespoke is really a template with a new skin. We build every web application from a blank canvas, around how your business actually works.
Most development teams build exactly what they're asked for. We spend the first two weeks with your users, mapping how they work and where the value is. That's the difference between software that looks right and software people actually use.
Strategy
We agree what the application needs to achieve before we design a single screen.
Design
UX research and design in Figma, built around the people who'll use it.
Engineering
Written by our own engineers, in-house. Nothing is outsourced.
UX-first engineering, with design and development in one team
No templates. What we learn in research goes straight into the build.
Performance-first builds that stay fast as you grow
We pick the stack for speed and reliability, and for the load you expect in two years' time.
Secure architecture designed for long-term growth
API-first, with role-based access from day one, so you don't build up technical debt you'll pay for later.
Faster delivery, built properly
AI handles much of the routine build now, so our engineers spend their time on the architecture, the security and the details your users notice. That's how most of our web applications go live in 6 to 8 weeks.
Bespoke web application development.
We're a custom web app development company for UK SMEs and startups. Every part of our web application development services, from scoping to design and engineering, happens in-house. Focused web apps and internal tools start from £5,000, and larger platforms are scoped individually. Starting a new product from scratch? See our MVP development service.
Custom portals
Secure platforms for your clients, staff or partners, with the right features for each role and all your documents and data in one place.
SaaS dashboards
Dashboards that show the health of your business, the trends and the problems, at a glance.
Multi-tenant web apps
One application serving many customers on shared infrastructure, so it costs less to run and scales easily.
Internal tools and admin systems
Tools that make your team faster, cut errors and get new staff up to speed sooner.
Booking and scheduling systems
Appointments and client meetings booked and managed automatically.
Integrations and automation
We connect your web app to your CRM, payment provider, accounting and logistics systems, so data moves between them without anyone retyping it.
Custom engineering
Front-end and back-end development built for your product.
Our recent projects.
How we build your web application.
Discovery
We agree the goals, the users and the problems to solve. Then we map the user roles, their journeys and the data the application needs.
UX research and architecture
If you already have a product, we audit it. Then we plan the structure and draw the wireframes.
UI design
High-detail designs for desktop and mobile, shared with you and agreed before development starts.
Development
Our engineers build the front end and back end in short sprints. You see working software on a staging site at the end of each one.
QA and performance testing
We run functional, regression and load tests on staging, and check that each user role can only see the data it should.
Launch, then support or keep building
We launch with you, then stay on to fix, support or keep building, whichever you need.
We also take over and extend existing web applications.
Not every project starts from scratch. If your web application is slow, fragile or hard to change, we review the code, stabilise it and keep building on it with the same process.
Taking over an existing web app
We review the code and architecture, agree a plan to stabilise it, then improve it step by step. We only rebuild if it's really needed.
Modernising legacy systems
We move ageing systems, like ASP.NET or FileMaker, onto a modern stack in stages, while your business keeps running on them.
Why work with Exline Labs.
All design and development done in-house
No outsourcing and no subcontractors, so communication stays clear and deadlines hold.
UX-first engineering
User research and development happen in the same team.
Sri Lanka team, UK working hours
Our designers and engineers are based in Sri Lanka and are online 8am to 5pm UK time. You get real overlap for standups and quick answers, at rates below a UK in-house hire.
Deep experience with SMEs and B2B workflows
We know how small UK businesses work, and the problems their software needs to solve.
UK hosting and UK GDPR
The apps we host run on UK servers, with backups and monitoring, and we handle your data under UK GDPR.
5.0 on Clutch from 15 verified reviews.
Germany
Communication was always followed up and deliveries were on time. They were always available for additional help and support. This is not what I experienced with the agency I used before — with Exline I always knew exactly where the project stood.
Christian Mühle
Managing Director of IDEA Data Solutions GmbH
Let us know your need.
Before your discovery call, we research your idea and come prepared with findings, not just questions.
Bespoke web application questions.
What's the difference between a bespoke web application and off-the-shelf software?
Off-the-shelf software makes you work its way. A bespoke web application is built around your processes, your users and your data, and you own the code.
How do you keep the application fast and secure?
We set performance targets at the start and build role-based access in from day one. Before every release, we test security and load on a staging copy. The apps we host run on UK servers, under UK GDPR.
How do you support the application after launch?
We host it on UK servers with backups and monitoring, fix bugs, keep everything updated, and keep improving it if you want to. If you'd rather run it on your own AWS, Azure or other cloud account, we'll set it up and deploy it there.
Do you use templates?
No. Every web application is built for the business that will use it.
Can you integrate with our existing systems?
Yes. We connect CRMs, ERPs, payment providers and internal databases through their APIs, or build the API if there isn't one.
Do you work UK hours?
Yes. Our registered office is in Trincomalee and most of the team works from Colombo. We're all online 8am to 5pm UK time, Monday to Friday.
How much does a bespoke web application cost?
Focused web apps and internal tools start from £5,000. Larger platforms, with several user roles and integrations, are scoped individually. You get a fixed, milestone-based proposal before any work starts.
What industries do you work with?
SMEs in SaaS, logistics, education, ecommerce, sport and local services.
What technologies do you use?
Usually Next.js, React, Node.js, Laravel or Python (FastAPI). We choose what fits your product and your team.
How long does custom web application development take?
Most web applications take 6 to 8 weeks from discovery to launch. Your proposal gives you a fixed timeline before any work starts.
Do you support the application after launch long term?
Yes, on a monthly retainer, usually with the same developer who built it. See our dedicated developers service.
Who will own the IP of the web application?
You will. All work is done on a work-for-hire basis, and we make no claim on the finished application.
Ready to build your web application?
Tharsh Thangavadivel
Founder, Exline LabsBook a free discovery call. We'll talk through what you need, recommend a tech stack and give you a cost estimate.