Commerce OS
Storefront, marketplaces, WhatsApp, POS and warehouse on one order book.
Launch from ₹2.8L · live in 3–4 weeks
AI-Native Software CompanyYour partner for AI-native software and digital transformation.
Stack18 brings together an AI-native delivery platform, ready-made business systems, expert services, dedicated transformation teams and in-house ventures, backed by a growing ecosystem for builders. Whatever you are building, one partner takes it from idea to production.
- Built in India, for the worldSenior team based in Jaipur
- AI-native delivery10 AI agents in every build
- Priced in rupeesFixed-price first step
Free 30-minute call with a senior specialist. Reply within one business day.
Our Stack
One foundationEcosystem
What we deliver
Every layer runs on the one below it.What is Stack18? →
6ready-made business systems
171 modules
171 modules
30specialist practices
across five service lines
across five service lines
10AI agents working
in every delivery team
in every delivery team
₹1.6Leditions start from
one-time, no per-user fees
one-time, no per-user fees
Quick answer
What is Stack18?
Stack18 is an AI-native software and technology company in Jaipur, India, founded in January 2018. It offers custom and enterprise software, six ready-made business systems from ₹1.6L, AI agents, enterprise AI transformation through dedicated pods and in-house ventures, all delivered on the Agentic SDLC with human approval at key decisions. Stack18 also runs a Marketplace: a research directory of third-party software and AI agents with sourced profiles.
Where do you want to start?
Six ways to start with Stack18.
Pick the one that sounds like you. Every path runs on the same foundation, so you can add the next one whenever you are ready.
I run a growing business
Get a ready-made system for commerce, ERP, CRM, supply chain, finance or AI, live in weeks.
SolutionsEditions from ₹1.6L
→I need something built or modernisedSenior teams for software, cloud, data and AI, starting with a fixed-price first step.
Services30 practices
→I lead an enterprise AI transformationFrom AI strategy and modernisation to governed agents, with a dedicated pod on one annual contract.
Enterprise AI Transformation12–36 month contracts
→I want to run delivery with AIOne command centre for the services, software and AI agents you run.
Agentic SDLCWaitlist open
→I want to lead a companyLead a Stack Ventures company as CEO or co-founder, once it has a product, fit and ₹1 crore in revenue.
Stack VenturesHiring CEOs
→I am choosing software or AI toolsResearch sourced profiles, side-by-side comparisons and alternatives for third-party software and AI agents.
MarketplaceDated sources, no paid placement
→The platform
One command centre for every service, software and agent.
Agentic SDLC is where Stack18 runs everything it delivers. Ten specialised AI agents draft specs, write code, test and document, while your people approve what matters.
- Live progress across every service and software project
- Every AI agent, its task and its output, in one view
- Approvals, audit trail and traceability built in
CompassDraftBlueprintFrameGridWeldWatchLedgerLaunchPulse
Agentic SDLCDiscover to operate
7 stages- Discover
- Define
- Design
- Build
- Test
- Deploy
- Operate
Governance gates
Pre-built solutions
Ready-made systems, priced in rupees, live in weeks.
Six production-ready business systems with 171 modules. Choose Launch, Grow or Scale, or pick modules one by one. One-time price, no per-user fees.
Business OS
Sales, purchase, stock, accounts, payroll and service in one ERP.
Launch from ₹2.8L · live in 3–4 weeks
Customer OS
Leads, WhatsApp, campaigns, support and loyalty on one customer record.
Launch from ₹1.6L · live in 3–4 weeks
Supply Chain OS
Procurement, warehouses, production and distribution, with AI planning.
Launch from ₹2.3L · live in 4–5 weeks
FinOps OS
Payables, collections, reconciliation, GST and TDS with a live CFO view.
Launch from ₹2.4L · live in 3–4 weeks
AI Enterprise OS
Private AI, knowledge and governed agents for every department.
Launch from ₹3.2L · live in 4–5 weeks
Technology services
Senior teams. AI-native delivery. A fixed-price way to start.
Strategy, product engineering, AI, modernization and data, delivered on the Agentic SDLC with weekly working software.
- Free consultation30 minutes with a senior specialist
- Fixed-price first stepA discovery sprint or assessment, 1–4 weeks
- Build and runA fixed-scope project or a dedicated pod
Strategy & Consulting
Decide what to build, in what order, and what it is worth.
Product Engineering
Design, build and ship products, platforms and internal systems.
AI Transformation
Move AI from pilots to governed production.
Modernization
Renew legacy systems and cloud in stages, without stopping the business.
Data & Growth
Turn data into decisions and the customer stack into growth.
Enterprise AI Transformation
Transform your enterprise for the age of AI.
From AI strategy and legacy modernisation to governed agents and AI-native delivery, one partner across strategy, engineering, data, cloud and governance. Begin with a focused first engagement, or go straight to a dedicated Enterprise Transformation Pod on a 12 to 36 month annual contract.
- 1Discover
- 2Architect
- 3Modernise
- 4Build & Agentify
- 5Govern & Adopt
- 6Scale & Optimise
Enter at the stage that fits where you are today. Human approval at every critical gate.
Foundation Pod6–8 specialistsOne business unit or first programme
Scale Pod12–20 specialistsMulti-track change across functions
Enterprise Pod25+ specialistsGroup-wide transformation
Year one, measured every month
Days 0–30Mobilise
Days 31–90Prove
Months 4–6Scale
Months 7–9Optimise
Months 10–12Renew
- Staffed in 30 days after signature
- Quarterly business reviews with your leadership
- A documented exit and handover plan in every contract
Free 60-minute leadership briefing. Confidential, with NDA on request.
Stack Ventures
We build the company first. Then we hand it to its leader.
Stack Ventures builds new companies inside Stack18, takes them to product-market fit and ₹1 crore in revenue, then hires a dedicated CEO and spins each one off as a company of its own.
Build productProduct-market fit₹1 crore revenueHire CEOSpin off
Built inside Stack18Our own team builds the product and proves the market.
₹1 crore, then a CEOA dedicated leader joins a business that already works.
Spun offA separate company with its own board and cap table.
Stack18 Marketplace
Choosing software or AI agents? Start with sourced facts.
A research directory of third-party software and AI agents. Each profile shows what a product does, who it suits, how it is priced and where the evidence comes from.
- Dated sources on every profile, with links to official vendor pages
- No paid placement, and unknowns are labelled rather than guessed
- AI agents classed by what vendor documentation supports
Third-party products only. Stack18’s own ready-made systems are on Solutions.
SoftwareSourced software profilesCRM, customer support, project management and collaboration tools.→AI agentsAgents, labelled honestlyAutonomous agent, agentic tool, assistant or software with AI features.→CompareSide-by-side comparisonsHubSpot vs Salesforce Sales Cloud, Cursor vs Claude Code and more.→AlternativesAlternatives and discussionsWhy teams look elsewhere, and how to choose in context.→
Why Stack18
Not an agency. Not a software vendor. One partner for the whole stack.
One foundation
Platform, solutions, services, pods and ventures share the same technology, so nothing you start is thrown away.
AI-native, human-led
Ten AI agents do the repetitive work. Senior people make every decision that matters.
Built for India
GST, e-invoicing, UPI, WhatsApp and Indian languages are built in, and solutions are priced in rupees.
Industries
Built for the way your industry works.
Proof of work
Real projects, shipped in three months.
Two recent engagements, from first workshop to launch.
ETHNIC WEAR D2C · JAIPUR
Website, mobile app and ERP for a ₹100+ crore brand
A nine-member team built the storefront, the shopping app and the back office on one connected foundation.
- 3 months from kickoff to launch
- Website, mobile app and ERP
A student wellness app, live on Android and iOS
A VC-backed startup went from scope to both app stores in three months.
- 3 months to launch
- Android and iOS together
How an engagement works
From first call to scale, one clear path.
The same five steps whether you are buying a ready-made system, building custom software or starting an enterprise transformation.
Discover
A free 30-minute call with a senior specialist to understand your business and the problem worth solving.
Scope
A written scope, timeline and fixed price for the first phase, so you know what you are committing to.
Build
Two-week sprints that end in working demos. AI agents do the repetitive work; senior people decide.
Launch
Go-live with your team ready, followed by 30 days of hypercare while everything settles in.
Scale
A support plan, a dedicated Enterprise Pod or your next solution, all on the same foundation.
Built in Jaipur. Connected to the world.
A software company from the Pink City, working with businesses everywhere.
Stack18 was founded in Jaipur, Rajasthan, in January 2018 by Prateek Mathur, and is still headquartered there. Engineering, product and operations sit in one place, and the company works with businesses across India and abroad, with English as the working language.
- JaipurHeadquarters
- San FranciscoTechnology & innovation
- LondonEnterprise connections
- DubaiMiddle East partnerships
The Stack18 ecosystem
More than a software company.
Around the core business of building software and AI, Stack18 builds its own companies and runs initiatives for learning, community, partnerships and giving back.
Stack Ventures
Companies built inside Stack18 to ₹1 crore in revenue, then spun off with their own CEO.
Stack School
Practical learning in AI, software, product and entrepreneurship, taught by practitioners.
Stack Connect
Stack18’s network of founders, engineers, AI builders and technology leaders.
Events
Founder meetups, technology summits, workshops and networking evenings.
Partnerships
Technology, implementation, agency, referral, enterprise and venture partners.
Stack Gives
Digital literacy, technology for good and opportunities for young talent.
Want to build with us? See careers and internships.
Popular capabilities
Where most conversations start.
Start from the problem you are trying to solve. Each page has a clear offer, proof and a fixed-price first step. See all capabilities.
Explore
Custom Software Development
Custom software development company in India: platforms, portals, internal tools and APIs with weekly demos and a fixed-price start. Free consultation.
Explore →ExploreAI Agent Development
AI agent development company in India: governed agents for support, sales, finance, HR and operations with approvals, audit trails and your own data. Free consultation.
Explore →ExploreEnterprise AI Development
Enterprise AI development services: governed agents, private AI on your data, integrations and measurable ROI. Human approval gates and full audit trails. Free consultation.
Explore →ExploreLegacy Application Modernization
Legacy application modernization services: AI-mapped code, strangler-pattern migration, zero-downtime cutovers and parity testing. Fixed-price assessment. Free risk call.
Explore →ExploreCustom ERP Development
Custom ERP development company in India: GST-ready ERP for SMEs and enterprises, ready-made from ₹2.8L or fully custom. Fixed-price start. Free consultation.
Explore →ExploreSoftware Development in Jaipur
Stack18 is a software development company in Jaipur: custom software, web, mobile, AI and ERP with fixed-price starts and weekly demos. Free consultation.
Explore →ExploreMVP Development
MVP development for startups: fixed-price discovery, scoped build with weekly demos, Android and iOS or web. Wellness app launched in 3 months. Free consultation.
Explore →ExploreWhatsApp Business API Integration
WhatsApp Business API integration with CRM, orders and helpdesk: shared team inbox, automation and AI replies in Hindi and English. Free consultation.
Explore →Decide with confidence
Straight answers before you commit.
Rupee prices, honest decision guides and a plain explanation of how AI work is governed, all published before you talk to anyone.
PricingSee what each option costs
One-time rupee prices, fixed-price services and annual pods, with what is included and what is paid separately.
→Decision guidesBuild or buy? Agency or pod?Four side-by-side guides, honest about when Stack18 is not the right choice.
→ResourcesCost guides for IndiaWhat software, ERP and mobile apps really cost, plus how to start with AI agents for business.
→Security & AI governanceAI executes. Your people approve.Five governance gates, an audit trail for every decision, and your code and data stay yours.
→FAQ
Questions, answered.
What does Stack18 do?
Stack18 helps companies build, modernise and run technology. We offer an AI-native delivery platform (Agentic SDLC), six ready-made business systems, technology services, enterprise AI transformation through dedicated Transformation Pods and Stack Ventures, which builds companies in-house and spins them off. We also run the Stack18 Marketplace, a research directory of third-party software and AI agents.
Who founded Stack18 and where is it based?
Stack18 was founded in January 2018 by Prateek Mathur and is headquartered in Jaipur, Rajasthan, India. It works with businesses across India and abroad.
Is Stack18 a software development company in Jaipur?
Yes. Stack18 is an AI-native software company headquartered in Jaipur that builds custom and enterprise software, web and mobile apps, AI agents, ERP and CRM systems. See software development in Jaipur.
How is solution pricing calculated?
Each module has a one-time build and setup price in Indian rupees, excluding GST, and each solution comes in Launch, Grow and Scale editions at 10–20% below their combined module price. Bigger modules include the smaller ones they contain, so nothing is charged twice.
How do service engagements start?
With a free 30-minute consultation, then a short fixed-price first step such as a discovery sprint or assessment, before any larger commitment.
What is the Enterprise Transformation Pod?
A dedicated multidisciplinary Stack18 team on a 12, 24 or 36 month annual contract, in Foundation (6–8 specialists), Scale (12–20) or Enterprise (25+) sizes. It combines strategy, engineering, AI, data and operations and is accountable for a shared transformation scorecard. Many enterprises start with a free 60-minute leadership briefing and a focused first engagement.
How does Stack18 govern AI work?
AI agents execute work on the Agentic SDLC, and your people approve requirements, architecture, releases and production changes at five governance gates. Every decision is recorded in an audit trail, your code, data and deliverables stay yours, and your data is not used to train models without your prior written permission.
What is the Stack18 Marketplace?
A research directory of third-party software and AI agents. Profiles show what a product does, who it suits, how it is priced and where the evidence comes from, with dated sources, comparisons, alternatives and discussions. There is no paid placement, and Stack18’s own ready-made systems are listed under Solutions.
What is Stack Ventures?
Stack18’s company-building arm. It builds new companies inside Stack18, takes them to product-market fit and ₹1 crore in revenue, hires a dedicated CEO and spins each one off as a separate company.
How long does a ready-made system take to go live?
A Launch edition typically goes live in 3 to 5 weeks, depending on the solution. Grow and Scale editions take longer because they include more modules. See solutions.
How much does custom software cost in India?
It depends on scope. Stack18 fixes the price after a short 1–4 week discovery, so you see the plan, team and price before committing. The software development cost guide explains what drives the number.
Which industries does Stack18 work with?
Retail and D2C, manufacturing, distribution and trading, BFSI and fintech, healthcare, education, real estate, logistics, SaaS and startups, and enterprises and groups.
Does Stack18 work with clients outside India?
Yes. Stack18 works with businesses in India and abroad, with global connections in San Francisco, London and Dubai.
What else does Stack18 run besides client work?
Stack School for practical learning, Stack Connect for its community, events, a partner programme, Stack Gives for giving back, and Stack Ventures, which builds Stack18’s own companies.
How do I contact Stack18?
Book a free 30-minute consultation through the contact page or email hello@stack18.com. A senior specialist replies within one business day.
Build what comes next.
Tell us what you are working on. We will point you to the right starting point, whether that is a ready-made system, a service, an enterprise AI transformation or a role leading one of our ventures.