We build websites & software for businesses across India — based in Kolkata — See what we do →
Custom Software Development — Kolkata

We Build Software
That Fits How Your
Business Already Works.

Web apps, mobile apps, internal tools, APIs — If your team is still managing something through spreadsheets, WhatsApp, or manual processes, we can turn it into software that saves time and reduces mistakes.

Web Applications
Mobile Apps
Custom Software
API & Backend
E-Commerce
CMS & Portals
Code reviewed
before handoff
Ships when
we said it would
app.js api.php schema.sql
01 // Casper Technologies — Custom App
02 import React, { useState, useEffect } from 'react'
03 import { BrowserRouter, Route } from 'react-router-dom'
04
05 const App = () => {
06 const [ data, setData ] = useState ( [] )
07
08 useEffect (() => {
09 fetch ( '/api/v1/projects' )
10 . then (( res ) => res . json ())
11 . then (( data ) => setData ( data ))
12 }, [])
12
13 return (
14 < Dashboard data ={ data } secure ={ true } />
15 )
16 }
17
18 export default App
19
Tests passed React 18 · Laravel 11 · MySQL 8 Live
Code you can hand to any developer
QA checked before delivery
We're reachable after go-live
Security checked before launch
No lock-in contracts
What We Build

Six Types of Software We Actually Build

Pick what you need — or talk to us if you're not sure which fits your project.

Web Applications React · Next.js · Laravel
Mobile Apps Flutter · React Native
Custom Software PHP · Node.js · MySQL
API & Backend Laravel · Node.js · REST
E-Commerce WooCommerce · Stripe
CMS & Portals WordPress · Custom CMS

Web Applications

React · Next.js · Laravel

01

If you need a dashboard, a booking system, a client portal, or a full SaaS product — this is what we do most. We use React.js, Next.js, and Laravel depending on what the project actually needs.

Single Page Applications (SPA)
Admin Dashboards & Panels
SaaS
Real-time Features
Built with search-friendly structure
ReactReact.js
NextNext.js
LaravelLaravel
MySQLMySQL
NodeNode.js

Mobile Apps

iOS · Android · Cross-Platform

02

One codebase, works on both iOS and Android. We use Flutter and React Native — so you're not paying to build the same app twice. Works offline, handles push notifications, ready for both app stores.

iOS & Android from One Codebase
Offline Mode & Local Storage
Push Notifications
App Store & Play Store Publishing
Payment & Auth Integration
Fast, responsive app experience
FlutterFlutter
RNReact Native
FirebaseFirebase

Custom Software

Built Around Your Workflow

03

If your team is still using Excel for something that should have its own system — that's the kind of thing we fix. Internal tools, management systems, process automation. Built around how your people actually work, not around how a generic product thinks you work.

Internal approval systems
Inventory & stock workflows
Employee & client dashboards
Role-based access for teams
Custom reports your managers can actually use
Replacing Excel-based processes
PHPPHP
LaravelLaravel
NodeNode.js
MySQLMySQL

API & Backend Development

REST

04

If you need a mobile app and a web app talking to the same data — that's an API job. We build REST APIs with Laravel and Node.js, document them in Postman, and make sure your frontend developers aren't guessing at endpoints.

RESTful & GraphQL APIs
Third-Party Service Integrations
JWT / OAuth Authentication
Postman API Documentation
Database Design & Optimization
Caching & Performance Tuning
LaravelLaravel
NodeNode.js
PGPostgreSQL

E-Commerce Development

WooCommerce · Custom · Stripe

05

We build online stores that actually work — product pages, cart, checkout, payment gateway, inventory, order tracking. WooCommerce if WordPress fits your setup, custom Laravel build if you need more control.

Custom Online Store Development
Payment Gateway Integration
Inventory & Stock Management
Order Tracking System
Coupon & Discount Engine
Multi-vendor Support
WPWooCommerce
LaravelLaravel
ReactReact
StripeStripe

CMS & Portals

Simple to Manage Later

06

We build CMS setups where your team can update content without calling a developer every time. WordPress for most cases, custom CMS if WordPress isn't the right fit. Client portals with login, roles, and file management also fall in this category.

WordPress Theme & Plugin Dev
Custom CMS from Scratch
Client & Partner Portals
Multi-user Role Management
Media & File Management
SEO-Ready Structure
WPWordPress
LaravelLaravel
MySQLMySQL
Tech Stack

Our Tech Stack

The languages and frameworks we actually use — not just ones we've touched once.

FRONTEND 4 tools
React React.js 78%
Next Next.js 68%
JS JavaScript 82%
CSS Tailwind CSS 74%
DATABASE 4 tools
MySQL MySQL 76%
Firebase Firebase 62%
BACKEND 3 tools
Laravel Laravel 80%
Node Node.js 66%
PHP PHP 78%
MOBILE 2 tools
Flutter Flutter 72%
RN React Native 62%
CMS & TOOLS 2 tools
WP WordPress 79%
Git Git / GitHub 83%
Our Process

How a Project Goes — Start to Finish

Six steps. Each one ends with something concrete before we move to the next.

1
Discovery
2
Design
3
Build
4
Testing
5
Launch
6
Support
Step 01 of 06

Discovery & Planning

We start by understanding exactly what you're trying to build — and why. What does it need to do? Who's using it? What's your deadline and budget? We get all of this on paper before anything else happens.

Business goals & KPIs discussion
Technical requirement gathering
Tech stack recommendation
Project roadmap & timeline
Duration
2–3 Days
Who's Involved
You + Our Team
Deliverable
Project Brief + SRS
Step 02 of 06

UI/UX Design

We start with wireframes — just boxes and layout, nothing polished. Once that's signed off, we move to the full UI in Figma. You can click through it before we write a line of code.

Wireframes & user flows
High-fidelity UI design
Interactive prototype
Client approval before build
Duration
3–7 Days
Tool Used
Figma
Deliverable
Figma Design File
Step 03 of 06

Development

We build in weekly sprints. Every 7 days there's something live to look at — not just a status update. Code is on GitHub from day one, reviewed before it gets merged.

Frontend & backend development
Weekly live previews
Git version control
Code review & documentation
Duration
Depends on Scope
Stack
React + Laravel
Deliverable
Source Code + Docs
Step 04 of 06

Testing & QA

Before anything goes live, we test it on real devices, different browsers, slow connections, and edge cases that actual users will hit. Security gets checked too. You do a final review and sign off.

Cross-browser & device testing
Performance benchmarking
Security vulnerability scan
UAT with client sign-off
Duration
3–5 Days
Goal
Critical Issues Checked
Deliverable
QA Report
Step 05 of 06

Launch

We handle the deployment — server setup, domain, SSL, final checks. On go-live day, we're watching. If anything breaks in the first 24 hours, we're on it.

Server / cloud deployment
Domain & SSL setup
Final go-live checklist
Handover & team training
Duration
1–2 Days
Where
Your Server / Cloud
Deliverable
Live Product 🚀
Step 06 of 06

Support & Maintenance

Bugs that show up in the first 30 days get fixed at no charge — That's included as part of our support process. After that, we're still available for fixes, updates, and new features. Most clients stay in touch for the next thing.

30-day free bug fixes
Performance monitoring
Feature update roadmap
Priority support channel
Duration
Ongoing
Free Period
30 Days
What Happens Next
New features, updates, improvements
Step 1 of 6
Why People Work With Us

Why People Work
With Us Again

Honest reasons — not marketing promises.

01
You Talk to the Developer — Not an Account Manager

The person you message is the person writing your code. No one in between passing things along and losing context. If something's unclear, you sort it out directly — which is just faster for everyone.

Fast
direct communication
02
The Code Is Yours — Fully

You get the full source code, documented, on GitHub. If you ever want to bring in another developer later, they should be able to open it and understand what's happening without calling us.

GitHub
Full source access
03
We Give Timelines We Can Actually Meet

Before we commit to a date, we make sure it's actually achievable. Every week you see what's been built — not a status email, something live you can click through. If the timeline shifts, you hear it from us before it becomes a problem.

Weekly
Something to show
04
Security Isn't an Afterthought

SQL injection protection, input validation, proper auth — these go in from the start, not bolted on at the end when someone notices a problem. We do a security check before anything goes live.

Checked
Before every launch
05
No Contract That Traps You

No long-term lock-in contracts. You own the code, you own the accounts, you own everything. If you decide to move on, there's nothing stopping you. We'd rather you stay because the work is good.

Month to month
No long-term lock-in
06
Adding Features Later Won't Mean Rewriting Everything

We build with the next version in mind. If you want to add a new module in 6 months, we shouldn't have to pull apart the whole codebase to do it. That's how scalable software should be built.

30 days
Free bug fixes post-launch
Engagement Models

How You Can Work With Us

Three ways — pick what suits your project. Not sure which one? The helper at the bottom will sort it out.

Fixed Price
One price, full delivery
Best ForDefined scope projects
BillingMilestones
FlexibilityScope agreed upfront
TimelineFixed & agreed
Ideal WhenYou know exactly what you want
Get a Quote
Dedicated Developer
A developer aligned with your project
Best ForOngoing products
BillingFlexible monthly engagement
FlexibilityPivot freely
TimelineOngoing, your pace
Ideal WhenYou need a long-term partner
Start Now
Hourly
On-demand development support
Best ForFixes & small tasks
BillingBased on actual work hours
FlexibilityFully flexible
TimelineOn demand
Ideal WhenYou need help, not a commitment
Get Support
Can't decide? Here's a quick guide.

Match your situation to the right model.

I know what I want to build
Specific features, rough deadline, budget already in mind
→ Fixed Price
I'm building something that'll keep growing
Features keep changing, need someone around long term
→ Dedicated Dev
I need ongoing technical support or improvements
A bug fix, a small feature, or some technical advice
→ Hourly