20+

Years in Business

Established in Year 2000

1,000+

Production Deployments

Across India & Overseas

9+

Proprietary Platforms

Living Proof of Capability

100%

Code & IP Ownership

Zero Vendor Lock-In
Mission-Critical Transformation

Legacy Application Modernization & Desktop-to-Cloud Conversion

Are 15-to-20 year old desktop applications, siloed databases, or monolithic systems holding your business back? We modernize them safely into high-performance React and Node.js cloud systems.

Why Businesses Hesitate—and How We Guarantee Zero Risk

Most enterprises fear legacy modernization because generic dev shops attempt a reckless "complete rewrite" that breaks undocumented business rules, corrupts historical data, or halts daily transactions.

Having built and maintained production software for over 20 years, ATS engineers understand both worlds: the legacy architecture (Visual Basic 6, FoxPro, Delphi, old .NET WinForms, monolithic ASP/PHP, local database engines) and the modern cloud ecosystem (React.js, Node.js microservices, PostgreSQL, modern SQL Server).

Our Zero-Disruption Commitment

We employ the proven Strangler Fig architectural pattern. Legacy and modern systems run in parallel with real-time data synchronization. Modules are migrated incrementally until cutover is verified—ensuring zero business interruption and 100% data fidelity.

What We Convert & Modernize
  • Legacy Windows Desktop to Cloud Web (React.js) Convert legacy VB6, Delphi, FoxPro, and .NET WinForms apps into modern, responsive React web portals accessible on any device.
  • Monolithic Codebase to Node.js Microservices Decouple monolithic backends into fast, modular Node.js REST and GraphQL APIs with automated testing.
  • Legacy Database Migration (PostgreSQL / MySQL / MS SQL) Migrate legacy databases (Access, dBase, old SQL Server) to modern PostgreSQL, MySQL, or cloud-hosted MS SQL Server with automated reconciliation.
  • Mobile & Handheld Workflow Enablement Equip your floor managers, service technicians, or billing agents with intuitive mobile dashboards connected live to your central database.
01
Codebase & Schema Audit

We inspect your existing binaries, schemas, and reports to reverse-engineer and document 100% of your business rules and database relationships.

02
Target Cloud Architecture

We design responsive React.js UI prototypes, Node.js API endpoints, and optimized schema models in PostgreSQL, MySQL, or MS SQL Server.

03
Dual-Run Data Sync

We deploy automated data pipeline bridges that replicate transactions in real-time between legacy storage and your new enterprise database.

04
Incremental Module Rollouts

Users are transitioned department by department onto the new React web interface, validating data accuracy alongside legacy systems.

05
Cutover & Source Handover

Once all workflows are verified, legacy systems are retired. You receive 100% source code, deployment scripts, and training with zero lock-in.

Empirical Evidence

Living Proof: Our Battle-Tested Proprietary Platforms

Most custom dev agencies show slide decks and NDA-covered mockups. We demonstrate capability through 9+ proprietary, production-ready platforms engineered in-house and deployed across 1,000+ facilities.

HRMS108
Enterprise HR & Statutory Payroll

Cloud HR suite with multi-tier Indian statutory payroll (EPF, ESIC, PT, TDS), employee self-service portal, biometric attendance sync, and leave approval workflows.

React Node.js MS SQL / MySQL Biometric Sync
Inspect HRMS108 →
FoodCourtBilling
High-Throughput Cashless System

Cashless RFID smart card and QR payment engine built for extreme transaction loads in corporate cafeterias, university food courts, and commercial event venues.

RFID / NFC Sub-Second Processing High Concurrency SQL Engine
Inspect Cashless Engine →
TokenDisplay IoT
Hardware & Queue Intelligence

Real-time IoT queue management integrating microcontroller hardware, audio voice synthesis, HDMI digital signage, and multi-counter POS systems.

IoT Microcontrollers WebSockets LED & HDMI Multi-Counter
Inspect IoT Token System →
LockerManagement
Secure Vault & Access Control

Automated biometric, PIN, and RFID locker allocation engine for enterprise fitness clubs, secure data centers, and corporate facilities.

Hardware Controller Audit Trail Biometric Access PostgreSQL
Visit Product Portal →
Service Center ERP
RMA & Repair Job Management

End-to-end repair job cards, warranty tracking, spare parts inventory deduction, technician commissions, and automated SMS customer updates.

Job Card Engine Inventory Costing GST Billing SMS Webhooks
Inspect Service ERP →
Survey108 Platform
Multi-Tenant Analytics Engine

High-scale feedback collection platform with conditional logic branching, sentiment analysis, real-time analytics aggregation, and automated alerting.

Multi-Tenant SaaS React Dashboards Node.js Engine Real-Time BI
Visit Survey108 →
Our Capabilities

Bespoke Custom Software Development Services

We engineer software tailored precisely to your operational workflows, eliminating the bloat and subscription fees of generic SaaS.

Enterprise Web & Cloud SaaS

Scalable, responsive web applications engineered with React.js and Node.js. Multi-tenant architectures, secure role-based access control, and RESTful/GraphQL APIs ready for enterprise load.

Relational Database Engineering

Expert schema design, query optimization, and transaction handling across PostgreSQL, MySQL, and Microsoft SQL Server. Automated backups and point-in-time recovery.

IoT & Hardware Device Integration

Bridge digital software with physical peripherals. We write robust drivers for RFID/NFC cards, ESC/POS thermal printers, barcode scanners, biometric readers, and LED/LCD digital signage boards.

Custom ERP, Billing & Invoicing

Custom billing and accounting systems built to your business rules. Automated GST tax calculations (CGST, SGST, IGST), HSN coding, inventory depletion, and multi-branch financial consolidation.

Workflow Automation & System Bridges

Eliminate repetitive manual entry. We build bi-directional API bridges between your internal databases, payment gateways, WhatsApp notification engines, and third-party accounting packages.

Dedicated Senior Engineering Pods

Augment your team with battle-tested senior engineers. Get dedicated React frontend developers, Node.js backend architects, and SQL database administrators focused 100% on your sprint deliverables.

Our Core Enterprise Technology Stack

We build on industry-standard, high-velocity technologies with long-term ecosystem stability.

Frontend Architecture

Lightning-fast responsive single-page and server-rendered web applications.

React.js Next.js TypeScript Redux / Context Responsive HTML5/CSS3
Backend & APIs

Modular, high-throughput microservices and RESTful API endpoints.

Node.js Express Fastify RESTful APIs GraphQL Microservices
Enterprise Databases

ACID-compliant relational data management and caching engines.

PostgreSQL MySQL Microsoft SQL Server Redis Caching Data Replication

Why Choose ATS Over Generic Agencies or Off-the-Shelf SaaS

Make an informed decision based on empirical facts, cost of ownership, and long-term risk.

Evaluation Metric ATS Custom Development & Modernization Generic Outsourcing Agency Off-the-Shelf SaaS
Track Record & Longevity 20+ Years in Business (Est. 2000) Often 2–5 years typical age Variable
Living Product Proof 9+ live platforms you can inspect today Slides & mockups behind NDAs Rigid single product
Source Code & IP Ownership 100% Client-Owned from Day 1 Often licensing or shared IP Zero ownership (Locked-in)
Legacy Desktop Modernization Proven Strangler Fig (0% Downtime) High-risk all-at-once rewrites Incompatible
Hardware & IoT Integration Deep physical-to-cloud mastery (RFID/POS) Screen/web developers only Limited to generic webhooks
Database Flexibility PostgreSQL, MySQL & MS SQL Server One-size-fits-all preference Proprietary cloud silo
Direct Architect Access Consult directly with Senior Architects Junior PMs and account reps Ticketing system support
Knowledge Base & Whitepapers

Engineering Insights & Modernization Articles

Deep architectural dives, database comparison guides, and real-world case studies from our engineering leads.

Legacy Application Modernization: Desktop to Cloud with React & Node.js
Modernization Guide
Legacy Application Modernization: Converting Desktop Software to Modern React & Node.js Cloud Systems

Discover how to migrate aging VB6, FoxPro, and WinForms desktop systems to cloud-native React and Node.js without a single minute of business downtime or data loss.

Read Complete Architecture Guide →
Custom Software Development: PostgreSQL vs MySQL vs MS SQL Guide
Database Architecture
Why 20 Years of Engineering Experience Matters: PostgreSQL vs MySQL vs Microsoft SQL Server

An in-depth enterprise database comparison for custom software projects. Learn which relational engine aligns best with your concurrency, reporting, and cloud infrastructure goals.

Read Complete Architecture Guide →
Browse All Custom Software & Modernization Articles

Frequently Asked Questions

Clear, transparent answers to help you evaluate ATS for your custom software or modernization initiative.

You do—100%. Upon completion of project milestones, all proprietary source code, database architectures, API documentation, and deployment configurations are transferred entirely to your organization. There are zero licensing fees, zero hidden royalties, and zero vendor lock-in. You have complete freedom to host on AWS, Azure, Google Cloud, or your private on-premise infrastructure.
We implement automated data extraction pipelines with bi-directional checksum validation and field-level reconciliation scripts. Before any production cutover, we run historical data simulations across test environments to ensure every transactional record, customer balance, and inventory ledger matches 100% with your legacy database.
React.js provides a lightning-fast virtual DOM, component reusability, and rich ecosystem for complex operational dashboards. Node.js offers an asynchronous, event-driven backend capable of handling high concurrency with minimal CPU overhead. Together in TypeScript, they allow unified data models across the entire stack, speeding up development and simplifying maintenance.
Unlike agencies that only build web screens, ATS has spent 20+ years writing hardware drivers. We bridge web applications to physical hardware using local background bridge agents, WebSockets, serial port communication (RS-232/USB), and network sockets—enabling web apps to trigger thermal ESC/POS printers, read RFID cards, control gate turnstiles, and push real-time queue tokens to LED displays.
Rapid MVP prototypes and focused modernization modules are typically delivered in 6 to 10 weeks. Comprehensive enterprise platforms follow agile bi-weekly sprint cadences with working clickable software demonstrated at the end of each sprint.
Direct Architect Access

Schedule Your Technical Architecture Consultation

Speak directly with senior software architects with 20+ years of domain experience. We will analyze your workflows, evaluate your legacy codebase, and outline a risk-free modernization or custom build strategy.

Direct Telephone Support

+91-9810078010 | +91-9871459002

Instant WhatsApp Discussion

Chat with Senior Architect on WhatsApp →

Email Inquiry & Technical RFP

ats.fnb@gmail.com | akash@atsonline.in

Request a Technical Discovery Call