Software & Apps
Software Development Services in London
Custom web applications and full-stack business software, built around how your team actually works — not bent to fit generic off-the-shelf software.
What does ITSL's Software Development service include?
ITSL is a software development company based in London that designs, builds and maintains custom web applications and full-stack business software using Python, PHP, JavaScript and MySQL.
Off-the-shelf software rarely fits a growing business exactly, which is why many London SMEs come to ITSL for bespoke web applications built around their own processes rather than the other way round.
Our developers work across the full stack — from database schema and server-side logic through to the interface your staff and customers actually use — so you get one team accountable for the whole build, not a chain of freelancers.
Key benefits of Software Development
- Bespoke web applications built to match your exact workflow instead of forcing you to adapt to generic software
- Full-stack delivery in Python, PHP, JavaScript and MySQL, so front end, back end and database are handled by one accountable team
- Clean, documented code and version control, making future changes faster and cheaper
- Integration with the tools you already use, including CRMs, payment gateways and existing databases
- Ongoing maintenance and support plans so your software keeps working as your business grows
How ITSL delivers Software Development
- 1
Discovery & scoping
We map your current process, pain points and must-have features into a clear project brief and timeline.
- 2
Design & architecture
We plan the database structure, user flows and interface before writing production code.
- 3
Build & test
Development happens in short cycles with regular demos, so you see progress and can adjust course early.
- 4
Launch & support
We deploy your application, train your team, and offer ongoing maintenance and feature updates.
Tools & technologies we use for Software Development
- Python
- PHP
- JavaScript / Node.js
- MySQL
- PostgreSQL
- Git
How much does Software Development cost?
Custom software projects are quoted individually based on scope and complexity — book a free consultation for an accurate estimate.
FAQs about Software Development
How much does custom software development cost in London?
Bespoke software projects are quoted individually based on scope, but most small business web applications from ITSL start from a few thousand pounds, with ongoing support available on a monthly plan. Book a free consultation for an accurate quote.
How long does it take to build a business web application?
A focused first version typically takes 4–10 weeks depending on complexity, with larger systems delivered in phased releases so you get value earlier.
Can ITSL take over or extend an existing system?
Yes. We regularly inherit existing codebases and databases, audit them, and extend or rebuild parts of the system without disrupting your day-to-day operations.
What programming languages does ITSL use for software development?
ITSL builds primarily with Python, PHP and JavaScript/Node.js on the back end, paired with MySQL or PostgreSQL databases, choosing the right combination for your project rather than a one-size-fits-all stack.
Will I own the source code for software ITSL builds?
Yes, ownership of the software and its source code transfers to you once the agreed contract is paid in full, consistent with the ownership terms on our pricing page.
Ready to discuss Software Development?
Book a free consultation with ITSL or check our pricing packages to get started.