Excel-to-web systems
Turn spreadsheets into a shared app with the same rules and proper access control.
Web application development
Custom web applications that run your business
We build browser-based software for the work your business does every day. Replace spreadsheets, connect your systems, give customers a portal or launch a new SaaS product.
- Business systems and SaaS
- For businesses and agencies
- You own the code
app.yourcompany.com / Orders
Open orders128
To invoice$42.6k
Paid this month$186k
#1042 Harbour CafeQuote sentWaiting
#1041 Northside ClinicApproved by PriyaIn progress
#1040 Kerry BuildersInvoice INV-2207Paid
Revenue, last 12 weeks
Sample screen
What is custom web application development?
Custom web application development means building software that runs in a web browser and is designed around your own process, instead of buying a generic tool. Common examples are CRMs, invoicing systems, inventory tools, customer portals and SaaS products. MGT builds these with React or Angular on the front end and FastAPI, Node.js or Rust on the back end, with PostgreSQL or MySQL databases.
The problem
When off-the-shelf software stops fitting
The business runs on spreadsheets
Copies get out of date, formulas break and nobody knows which file is right.
Too many disconnected tools
Staff re-type the same data into three systems.
Generic software doesn't fit
You bend your process to the tool instead of the other way round.
You have a product idea
You need a reliable team to turn it into a working SaaS.
What we build
Web applications we build
Custom CRM
Enquiries, customers, follow-ups and sales, shaped around how your team sells.
Invoicing and accounting
Quotes, invoices, payments and reports in one place.
Inventory and orders
Stock, purchase orders and order tracking across locations.
Customer and partner portals
Secure logins where customers see orders, reports and documents.
Booking and scheduling
Online bookings with calendar sync for Google and Outlook.
SaaS products
Accounts, subscriptions, billing and admin tools for a new product.
AI inside your app
Plain-language search and assistants that answer from your own data.
Options
Three common types of web app
For your team
Internal tool
Replaces spreadsheets and manual steps for staff.
For your customers
Customer portal
Self-service access to orders, reports and support.
For the market
SaaS product
A product you sell on subscription to many customers.
Use cases
What people use it for
- Replace a spreadsheet process with a shared system
- Track every order from enquiry to invoice
- Give customers a login to see their account
- Connect your accounting, CRM and email
- Launch a subscription product
- Add AI search to an existing app
Our capability
What we've already built
Production systems we have designed, built and shipped. Every project starts from this experience.
- CRM and sales pipeline systems
- Invoicing, accounting and finance portals
- Compliance platforms with identity checks and e-signing
- Booking portals with partner and customer logins and calendar sync
- Restaurant, e-commerce and custom ERP systems
- AI assistants that answer questions inside a web app
Technology
Our web development technology stack
Proven, well-supported tools, picked for your project rather than out of habit.
-
React
-
Angular
-
Node.js
-
Python
-
FastAPI
-
Rust (Axum)
-
PostgreSQL
-
MySQL
-
AWS
- React and Angular
- Fast, familiar interfaces that work on desktop and mobile browsers.
- FastAPI, Node.js and Rust (Axum)
- We pick the back end that fits: FastAPI for data and AI work, Node.js for real-time features, Rust for speed.
- PostgreSQL and MySQL
- Proven relational databases with backups and clear data ownership.
Frequently asked questions
How long does a custom web app take to build?
A focused first version usually takes 6 to 12 weeks. Larger systems are delivered in phases so you can use the first part sooner.
How much does a custom web application cost?
It depends on the number of features, users and integrations. After a short call we give you a fixed quote for the first phase.
Can you convert our Excel sheets into a web app?
Yes. We keep your business rules and calculations, and turn them into a shared app with proper access control and history.
Which technology do you use?
React or Angular for the front end, FastAPI, Node.js or Rust (Axum) for the back end, and PostgreSQL or MySQL for the database.
Do we own the source code?
Yes. The code, data and hosting accounts are yours.
Do you work with agencies?
Yes. We work directly with businesses and as a white-label development partner for agencies.
Show us the process you want to improve.
Tell us what your team does today and where it slows down. We'll reply with how a web app would fit and what the first phase would include.
We reply within one business day.