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Business software, built in India

Software that runs payroll, billing and purchasing for growing companies.

CSRN Technologies designs, builds and runs business software for Indian companies: HR and payroll, GST billing and accounting, procurement ERP, and commerce websites. Each product follows Indian tax and compliance rules from the start.

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Products

Four products, built for real Indian operations.

Each one runs a working part of a business: paying employees, raising GST invoices, buying from vendors and selling online.

HR & payroll SaaSWeb + Android

CSRN HRMS

A multi-tenant HR and payroll platform. Each company gets its own workspace, roles and branding, and payroll applies Indian statutory rules automatically.

  • Employee records, attendance, leave and multi-level approvals
  • Payroll with PF, ESI, professional tax and TDS under both tax regimes
  • Attendance synced from biometric devices, plus a native Android app
  • Per-employee subscription billing with quotations and GST invoices
  • Bulk employee import and export for onboarding new customers
React 19TypeScriptExpressPostgreSQLCapacitor
hrms / payroll / payslip / oct-2026
Payslip · October 2026EMP-0142 · Quality Assurance
Approved

Earnings

Basic₹32,000
HRA₹12,800
Special allowance₹9,200
Conveyance₹1,600

Deductions

PF (12%)₹1,800
Professional tax₹200
TDS · new regime₹2,140
LOP · 0 days₹0
Net pay₹51,460
Sample data for illustration.
GST billing & accounting SaaSWeb + Android

BillBook

GST billing, double-entry accounting, inventory and GST returns, sold on subscription. Each company's books are kept in a separate PostgreSQL schema.

  • Invoices, quotations, purchase bills, credit and debit notes, with CGST/SGST or IGST applied automatically
  • GSTR-1, GSTR-3B and GSTR-2 with GSTR-2B matching
  • Balance sheet, P&L, trial balance, ledgers and outstanding with ageing
  • Plans, trials and UPI Autopay renewals through Razorpay
  • Android app that shares invoices as PDF on WhatsApp or email
Node.js 22PostgreSQLRazorpayCapacitorDocker
billbook / sales / invoice / INV-2026-0418
Tax Invoice · INV-2026-0418Intra-state supply · Place of supply: Delhi (07)
GSTR-1 ready
ItemHSNQtyAmount
Steel cabinet, 4-door94032₹24,000
Installation service99871₹3,500
CGST 9%₹2,475
SGST 9%₹2,475
Invoice total₹32,450
Sample data for illustration.
Procurement ERPBuilt for MSPL

MSPL Purchase ERP

A procurement ERP covering the full vendor lifecycle, from registration to a signed contract, with every purchase document traceable to its source.

  • Vendor registration with document checks and approval
  • RFQs, sealed bids, technical evaluation and L1/L2/L3 ranking
  • Award letters, contracts, milestones and vendor performance ratings
  • Procure-to-pay: Indent → PO → GRPO → A/P invoice
  • Role-based access with separate view and edit rights for each module
ReactTypeScriptExpressPrismaPostgreSQL
erp / rfq / RFQ-0027 / evaluation
Indent→RFQ→Award→PO→GRPO→A/P Invoice
Commercial ranking · RFQ-0027Packaging material · 3 bids passed technical evaluation
Awaiting approval
RankVendorBid valueRating
L1Vendor A₹4,82,0004.6
L2Vendor B₹4,95,5004.2
L3Vendor C₹5,10,0003.9
Sample data for illustration.
Website & online storeClient: Elktroz

Elktroz

The website and online store for Elktroz, a New Delhi AIoT security and automation company selling smart locks, CCTV, access control and gate automation in more than 10 states.

  • Product catalogue, cart and checkout with Razorpay payments
  • Quote requests, service bookings and order tracking
  • Customer accounts and support tickets
  • Admin dashboard for products, leads, orders, tickets and the blog
  • Search-ready pages with sitemap and structured data
Next.js 14ReactPrismaTailwindRazorpay
elktroz.in / products / smart-security
Smart door lockFingerprint + app
CCTV camera4 MP, night vision
Boom barrierGate automation
Quote requestsNew leads
OrdersPaid · Shipped
TicketsOpen · Resolved
Services

What we can build for you.

We can set up one of our products for your company, adapt it to your processes, or build something new on the same foundation.

SaaS products

Multi-tenant platforms with plans, trials, renewals and a console for the owner.

Indian compliance

GST invoices, GSTR returns, payroll with PF, ESI, PT and TDS, set up correctly from day one.

ERP & workflows

Approval chains, document numbering and role-based access that match how your teams work.

Web & mobile apps

Fast websites, online stores and Android apps that share one codebase with the web app.

How we work

Innovate. Develop. Transform.

Each project goes through the same three stages, from your first requirement to your team using the software every day.

STEP 1

Innovate

We learn how your business runs today, map the process and agree on what the first release must do.

STEP 2

Develop

We build in short cycles on a proven stack, with demos along the way and your real data in testing.

STEP 3

Transform

We migrate your data, train your team, go live and stay on to support and improve the system.

Contact

Let's talk about your next system.

Tell us what you want to automate. We'll show you a working demo and give you a clear quote.

Email us
Contact person
Dev Raj
Emailinfo@csrn.co.in
Phone / WhatsApp
+91 85272 90788
Location
India