Six production-ready systems for commerce, operations, customers, supply chain, finance and AI. Built for Indian businesses, live in weeks and priced once in rupees.
Stack18 offers six ready-made systems: Commerce OS, Business OS, Customer OS, Supply Chain OS, FinOps OS and AI Enterprise OS. Together they hold 171 modules, sold as Launch, Grow and Scale editions at one-time rupee prices from ₹1.6L, with no per-user fees and Launch editions live in weeks.
Most businesses move through four stages. Every solution plugs into the others, so nothing you build is thrown away.
Move sales, stock, accounts and payroll off spreadsheets and onto one system.
Open new channels and turn every enquiry into a customer who comes back.
Buy better, hold the right stock and deliver on time across every site.
Put governed AI agents to work on the jobs your teams repeat every day.
Every solution comes in three editions, or module by module. Prices are one-time build and setup, excluding GST.
Sell everywhere. Run it all from one place.
Storefront, marketplaces, WhatsApp, POS and warehouse on one order book.
Run your whole business on one system.
Sales, purchase, stock, accounts, payroll and service in one ERP.
Win, serve and keep customers on every channel.
Leads, WhatsApp, campaigns, support and loyalty on one customer record.
From supplier to shelf, in real time.
Procurement, warehouses, production and distribution, with AI planning.
Close faster. Collect sooner. Stay GST-ready.
Payables, collections, reconciliation, GST and TDS with a live CFO view.
Put AI to work in every team, under your control.
Private AI, knowledge and governed agents for every department.
Website, marketplaces, WhatsApp and settlements on one system.
Launch editions together from ₹6.8LPurchase, production, stock and finance connected end to end.
Launch editions together from ₹7.5LDealer orders, godowns, dispatch and collections in one place.
Launch editions together from ₹5.1LEvery enquiry answered fast, followed up and converted.
Launch editions together from ₹4.8LProjects, billing, collections and AI on one backbone.
Launch editions together from ₹8.4LStores, online and warehouse sharing one stock and one customer.
Launch editions together from ₹6.7L| Custom build | SaaS subscriptions | Stack18 solutions | |
|---|---|---|---|
| Upfront cost | Often ₹5–20 lakh or more | Low to start | Editions from ₹1.6L |
| Time to go live | 3–6 months or more | Days to weeks | 3–14 weeks |
| Per-user fees | None | Grow with every user, every year | None |
| Indian compliance | Built from scratch each time | Varies, often via add-ons | GST, e-invoice, e-way bill, TDS and UPI built in |
| Changing it later | Yours to change, at full cost | Limited to the vendor roadmap | Customize any module on the Agentic SDLC |
Custom build ranges reflect typical Indian agency quotes for comparable scope in 2026.
Each module has a one-time build and setup price in rupees. No licence, no per-user fee.
Launch, Grow and Scale bundle the modules most businesses need, at 10%, 15% and 20% off.
Bigger modules include the smaller ones they contain, and required modules are added for you.
Hosting and third-party usage are billed by providers at cost. Care plan optional, from 15% a year.
Optional Stack18 Care plan from 15% of build value per year: updates, security patches, priority support and small enhancements.
A phased, fixed-scope plan for every edition.
We map your process, data and integrations, confirm the edition or module set, and fix a go-live date.
The solution is deployed on your cloud and configured to your workflows, roles, approvals and templates.
We connect payments, GST, messaging and your existing tools, and bring your data across.
Training, a supported launch and 30 days of hypercare. Add modules whenever you are ready.
Each module has a one-time build and setup price in rupees, excluding GST. Editions bundle modules at 10–20% below their combined price. Bigger modules include the smaller ones they contain, so nothing is charged twice.
No licence or per-user fees. You pay for cloud hosting on your own account and any third-party usage such as WhatsApp, payment gateway or AI model charges. The Stack18 Care plan for updates and support is optional, from 15% of build value per year.
Yes. All six share the same foundation, so customers, products, stock and money flow between them without duplicate entry. Many businesses start with one and add another within a year.
Fully. You get production-ready modules on day one, and Stack18 can change workflows, screens and integrations to fit how you work, using the Agentic SDLC platform.
On your own cloud account, typically in an Indian region, or on your servers. Your data never sits in a shared multi-tenant system.
Launch editions typically go live in 3–5 weeks. Grow and Scale editions are delivered in phases over 6–14 weeks, depending on modules and integrations.
Tell us how your business runs today. We will map the right solution and edition, and show it working with your own data.
