15 SME & ENTERPRISE WEB APP SOLUTIONS 2026
K
KHÁNH STUDIO ARCHITECT
VI / EN
Enterprise Consultation
// B2B SOFTWARE DIRECT PLATFORM //

Specialized Software & Web App Ecosystem Driving Explosive Business Growth.

A suite of 15 Mobile-First PWA Web Apps and 10 Enterprise Packages: VietQR payment with 0% platform commission, end-to-end automation from orders to Circular 78 e-invoices, independent Docker VPS hosting, and 100% customer data ownership.

Explore 15 Web Apps Process & Pricing
✓
100% Source Code & DB Handover
Zero vendor lock-in, autonomous self-hosted Docker VPS, full data control.
✓
VietQR 0% Platform Fee & Instant Settlement
Deposits and payments route directly to your bank account, eliminating 15-30% platform cuts.
✓
Enterprise-Grade Circular 78 & RLS Security
Automated tax e-invoice generation, multi-branch Row-Level Security isolation.
Modern technology studio workspace
KHANH STUDIO LAB • DA NANG, VIETNAM • PRODUCTION SOFTWARE ECOSYSTEM
PROJECT INITIATION

Initiate Your Project & Receive Tailored High-Performance Tech Solutions

A standardized engineering workflow from real-world business analysis to PWA architecture and 10 proprietary enterprise core modules.

Business Workflow Audit

Deep dive into cash-flow models, booking funnels, inventory quotas, and order fulfillment to eradicate manual operational bottlenecks.

STEP 01 / 06

Mobile-First PWA UI/UX Design

Thumb-optimized tactile interface, sub-second initial load, installable directly to the home screen without App Store friction.

STEP 02 / 06
Engineers discussing system architecture
1-on-1 Architecture Consultation Zero-Trust Audit & Financial Leakage Prevention

10 Enterprise Packages Integration

Inheriting proven modules: Circular 78 e-invoices, anti-spoofing GPS, Merkle hash audit chains, VRP dispatch routing, and D30+ credit lockout.

STEP 03 / 06
Software architecture blueprint sketch
Detailed Blueprint SQL Data Models & 10,000 QPS Load Optimization

Explore All 15 Production Applications

Experience all 15 SME business models firsthand with Live PWA interfaces and high-fidelity interactive simulators.

View Showcase Now ➔
// INDUSTRY REALITY & PAIN POINTS //

Finding the Right Tech Partner Is Harder Than You Think

Most SMEs are throttled by exorbitant marketplace commission fees, rigid off-the-shelf SaaS software, or inexperienced outsourcing agencies.

Losing 15 - 30% in Marketplace Fees & Cash Flow Delays

Intermediary platforms charge extortionate commissions per transaction and withhold payouts weekly, jeopardizing working capital liquidity.

Off-the-Shelf SaaS Software Cannot Scale or Customize

When you need custom features like K80 receipt printing, weight scale bridges, credit locks, or branch isolation, rigid SaaS platforms refuse to customize.

Data Leakage & Forfeiting Customer Relationships

Your hard-earned customers become users of third-party platforms; you cannot independently re-engage or launch targeted direct remarketing campaigns.

Unforeseen Hidden Fees & Inflated Cloud Invoices

Outsourcing shops often charge exorbitant monthly retainers or deploy redundant cloud services, driving operational costs out of control.

Senior software engineer deep at work
ENGINEERING WARRANTY GUARANTEE FROM KHANH STUDIO

Eliminate all risks with our 100% source code ownership & zero hidden fees guarantee.

You receive full code ownership, standardized Docker containers, comprehensive technical documentation, and direct 1-on-1 engineering support without sales intermediaries.

✓ Zero vendor lock-in ✓ 12-Month technical warranty
DELIVERY ROADMAP

Lean 4-Step Implementation Process

Streamlined to cut through red tape. Focused on deploying real software into production testing to drive immediate revenue.

01

Requirements Discovery

A 30-minute online alignment session directly with the Lead Architect to define precise workflows and cash-flow mechanics.

Timeline: Within 24 hours
02

Interactive Live Demo

Experience the fully functional PWA prototype on mobile devices and thermal printers before signing the deployment agreement.

Timeline: 48 business hours
03

Docker & VPS Deployment

Standardized Docker containerization, Caddy 2 HTTP/3 reverse proxy configuration, and Litestream continuous cloud replication.

Timeline: 3 - 5 business days
04

Handover & 24/7 Support

Complete Git repository handover, staff operational training, and 12 months of direct engineer-led technical warranty.

Warranty: 365 days
30K+
Active Users
Transacting across 15 live systems
15+
Production Web Apps
Ready for immediate deployment
10+
Enterprise Packages
Reusable monorepo architecture
99.98%
Cloud Uptime
24/7 automated monitoring

"We don't deliver superficial software templates. Every application in this ecosystem is engineered as a compounding digital asset—optimized down to the millisecond, fortified against financial leaks, and granting business owners absolute sovereignty over their data."

DPK
Dương Phúc Khánh (khanhdp · Kido)
Lead Solution Architect & Fullstack Engineer
7+ years designing distributed systems, high-concurrency backends & PWAs
TARGET AUDIENCE

Who Are These Solutions Built For?

Engineered specifically for distinct industry verticals, optimizing every touchpoint for both end consumers and operational staff.

SME Retail & F&B
RETAIL & F&B

F&B Chains, Bakeries & Specialty Fruit Stores

Receive VietQR payments with zero platform commission, instant K80 thermal receipt printing, central kitchen KDS integration, and express dispatch.

Services & Appointments
SERVICES & CLINIC

Spas, Dental Clinics, Homestays & Sports Arenas

Peak-hour slot booking matrices, 90% no-show reduction via automated deposits, smart lock PIN provisioning, and digital dental charts.

Multi-Branch Chains & Logistics
LOGISTICS & ENTERPRISE

Transport Fleets, Auto Garages, Central Kitchens & B2B Portals

VRP 2-Opt fleet dispatch routing, tamper-proof e-POD receipts, multi-level BOM breakdown, and automated D30+ dealer credit lockouts.

Consult on the Best Solution for Your Business Model
CORE DIFFERENTIATORS

Why Do Businesses Choose Khanh Studio?

Fundamentally distinct from outsourced dev shops or closed off-the-shelf SaaS platforms.

100% Source Code Ownership

Full Git repository handover, unconstrained customization freedom, and zero per-seat subscription license fees forever.

VietQR 0% Platform Fee

Customers scan QR codes to pay directly via Napas 247; funds settle immediately into your bank account with zero middleman escrow.

Enterprise-Grade Standards

Out-of-the-box Circular 78/Decree 123 e-invoicing, immutable SHA-256 Merkle shift audit logs, and bank-grade Row-Level Security.

$0 Bloat Lean Infrastructure

Lightweight Docker deployment running effortlessly on entry-level VPS. Pre-configured Caddy 2 HTTP/3 and near-zero RPO Litestream backup.

DIRECT CONNECTION

Submit Your Requirements & Receive a Custom Demo

Leave your business model details, and Lead Architect Khanh will reach out to discuss technical architecture and provide a live demo within 30 minutes.

// MISSION & PHILOSOPHY //

Delivering high-end engineering excellence to every Vietnamese SME business.

Born from the reality that thousands of shop owners, service chains, and SMEs in Vietnam forfeit 15-30% of gross revenue to intermediary marketplace apps, we engineered this ecosystem of 15 independent software solutions to restore digital sovereignty to business owners.

Khanh Studio's technical philosophy rests upon three pillars: Absolute Data Ownership, Lean Architecture with $0 Hidden Fees, and Sub-Second Execution Speed.

github.com/khanhduong22 linkedin.com/in/duong-phuc-khanh Official Biography
Dương Phúc Khánh (Duong Phuc Khanh · khanhdp · Kido) — Senior Software Engineer & Systems Architect

Dương Phúc Khánh (khanhdp · Kido)

Senior Software Engineer & Systems Architect

Directly consulting on architecture, co-authoring codebases, and guaranteeing technical quality for every deployment delivered by Khanh Studio.

• • Da Nang, Vietnam
// OPERATIONAL AUTOMATION //

We handle the heavy lifting so you can automate operations and scale your business.

No need to hire an expensive in-house engineering team. Launch a production-ready system in 3 - 5 business days with 24/7 technical warranty directly from the lead architect.

Consult with Lead Architect ➔
Business operations automation
LONG-TERM COMMITMENT

Join the Ecosystem & Enjoy Lifetime Software Reliability

Comprehensive Handover & Autonomy

100% source code, standardized Docker containers, and clear documentation to self-host independently without third-party reliance.

24/7 Dedicated Technical Partnership

12-month technical warranty, security patching, and direct incident response handled directly by the Lead Architect.

Cash Flow Optimization & 0% Platform Fees

Integrated VietQR with instant Napas 247 bank transfers at 0% fees, saving businesses hundreds of millions annually.

Explore All 15 Applications ➔
PRODUCTION ECOSYSTEM 2026

15 SME Web App Solutions & Retail Chains

Click "Launch Live Web App" to test the real PWA or click "Interactive Phone Preview" to experience the mobile frame simulator.

Zero-Login Live Demo 25 - 45M VND (~$1K - $2K)

Lim Art — Retail Store Management & Shift Scheduling PWA

Battle-tested retail operations management: GPS geofenced clock-in & shift detection, opening/closing checklists, FEFO expiration tracking, automated payroll & RBAC permissions.

Instant Demo: Zero-Login Required
Production Store: limart.khanhdp.com ↗
👑 Shop Owner / Admin Demo ↗ 👷 Staff / Shift Management PWA ↗
Sports & Court Booking 30 - 50M VND (~$1K - $2K)

V-Arena Pickleball & Badminton

Real-time court slot booking, peak-hour pricing matrix (+30%), automated VietQR Napas 247 deposits to prevent double booking, group bill splitting, and K80 receipt printing.

Core Package: @kt/tenant-guard
Time Slot Matrix: Realtime Lockout
Launch Live Web App (Live PWA)
Pet Hotel & Grooming 30 - 45M VND (~$1K - $2K)

Pet Paradise Resort & Spa

Air-conditioned VIP pet hotel boarding with 24/7 live streaming camera, digital vaccination pass, and K80 receipts with custom weight-based diet plans.

Core Package: @kt/audit-trail
Diet & Camera: Live RTSP Stream
Launch Live Web App (Live PWA)
Boutique Homestay & Villas 35 - 55M VND (~$1K - $2K)

LuxeStay Boutique Homestay & SmartLock

Direct booking with 0% OTA commissions, automated Smart Lock PIN provisioning synchronized with check-in times, instant VietQR deposits, and cleaning fee management.

Core Package: @kt/tenant-guard
Room Automation: PIN Smart Lock TT78
Launch Live Web App (Live PWA)
Aesthetics Spa & Clinic 30 - 50M VND (~$1K - $2K)

SereneBeauty Spa & Skincare Therapy

Therapist selection by skill and star rating, transparent per-shift commission splits, treatment photo timelines, and automated appointment reminders.

Core Package: @kt/audit-trail
No-Show Reduction: -85% via VietQR Deposits
Launch Live Web App (Live PWA)
Digital Dental Clinic 35 - 60M VND (~$1K - $2K)

SmileCare Digital Dentistry & Implant

Interactive 32-tooth dental chart, multi-phase orthodontic/implant tracking, 0% interest installment schedules, and Circular 78 e-invoicing.

Core Package: @kt/einvoice-vn
Electronic Records: Tax Digital Signatures
Launch Live Web App (Live PWA)
VIP Imported Fruits 25 - 40M VND (~$1K - $2K)

FreshBox Premium Fruits & Gift Baskets

Luxury gift basket builder, free-shipping threshold progress bar to maximize average order value, and seasonal Emerald Green / Fresh Amber theme switcher.

Core Package: @kt/offline-sync
Cart Upsell: +32% Order Value
Launch Live Web App (Live PWA)
Bakery & Custom Cakes 25 - 40M VND (~$1K - $2K)

SweetArt Bakery & Custom 3D Cakes

Interactive 3D custom cake lettering with live preview, cake diameter & party accessory selection, and VietQR deposits to eliminate late cancellations.

Core Package: @kt/bom-inventory
Wastage Control: Automated Flour & Sugar BOM
Launch Live Web App (Live PWA)
Artisan Florist & Gifts 25 - 40M VND (~$1K - $2K)

FloraBoutique Artisan Florist & Cards

Artisan flower bouquets for birthdays, grand openings, and graduations; custom greeting card typography preview and 2-hour express dispatch scheduling.

Core Package: @kt/geo-guard
Scheduled Delivery: Precision Hourly Windows
Launch Live Web App (Live PWA)
Quick-Service F&B & KDS 30 - 50M VND (~$1K - $2K)

Cloud Kitchen FastFood Express & Real-Time KDS

Kitchen Display System (KDS) sorting tickets by Queued - Cooking - Ready, split K80 bar/kitchen printing, and contactless table QR ordering.

Core Package: @kt/event-bus
Order Routing Speed: < 100ms to Kitchen KDS
Launch Live Web App (Live PWA)
Express Laundromat & Dry Cleaning 25 - 40M VND (~$1K - $2K)

CleanExpress Laundromat & Dry Cleaning Hub

Real-time 4-stage laundry tracking (Received - Washing - Ready - Delivered), weight-based billing, and thermal clothing barcode tags.

Core Package: @kt/wms-barcode
Basket Barcode Tag: Zero Lost Garments
Launch Live Web App (Live PWA)
Airport Transfers & Chauffeur 35 - 55M VND (~$1K - $2K)

GoFast ExpressRide & Airport Transfers

Automated distance-based pricing by vehicle class (Sedan, SUV, Limousine), VietQR deposits to curb phantom bookings, and SMS driver dispatch.

Core Package: @kt/fleet-routing
Route Navigation: Automated OSRM Engine
Launch Live Web App (Live PWA)
Auto Garage & Emergency SOS 30 - 50M VND (~$1K - $2K)

AutoCare Pro Garage SOS & Digital Service Book

Emergency roadside assistance dispatch with live GPS pin, digital vehicle maintenance record book, and transparent parts quotation before repair.

Core Package: @kt/geo-guard
Roadside Dispatch: Live GPS Coordinates
Launch Live Web App (Live PWA)
Central Kitchen & Recipe BOM 50 - 90M VND (~$1K - $2K)

CentralKitchen ERP & Recipe BOM Engine

Multi-level recipe BOM decomposition (tea, milk, packaging), tracking actual vs theoretical kitchen wastage, automated warehouse issue slips, and store replenishment dispatch.

Core Package: @kt/bom-inventory
Wastage Tracking: Real-Time Reconciliation
Launch Live Web App (Live PWA)
Fleet TMS Truck Logistics 60 - 120M VND (~$1K - $2K)

FleetTMS Truck Logistics & Digital e-POD

VRP 2-Opt multi-stop delivery route optimization saving 28.4% fuel mileage, and electronic proof-of-delivery (e-POD) with tamper-proof SHA-256 digital signature hashes.

Core Package: @kt/fleet-routing
Fuel Optimization: -28.4% Mileage Saved
Launch Live Web App (Live PWA)
B2B Portal & Credit Control 70 - 150M VND (~$1K - $2K)

B2B Wholesale Portal & Credit Control

Tiered dealer wholesale ordering portal (Carton/Pallet), automated Hard Lockout engine enforcing credit caps and D30+ delinquent payment freezes, and automated VietQR Statement of Account (SOA).

Core Package: @kt/b2b-credit
Credit Risk Engine: Circular 48 Hard Lockout D30+
Launch Live Web App (Live PWA)
Events & Production Logistics 40 - 90M VND (~$1K - $2K)

TK Studio T-RED Event & Photobooth Ops

High-throughput Glambot 360 & event photobooth operations management: conflict prevention (+2h buffer window), DNP thermal photo paper consumption tracking, crew skill allocation, and K80 equipment check-out receipts.

Core Package: @kt/equipment-rental
Crew Scheduling: @kt/crew-scheduler
Launch Live Web App (Live PWA)
Media & 9:16 Video Feed 35 - 75M VND (~$1K - $2K)

Winter Arc TikTok Tech Reels Video Feed

High-performance 9:16 vertical short-form video feed with buttery-smooth snap-scrolling: virtualized viewport, double-tap heart animations, interactive slide-over comment drawer, 360° spinning vinyl record, and instant video QR code sharing.

Feed Architecture: Virtualized 3-DOM Buffer
Content Vault: 5 Episodes Full HD 60fps
Launch Live Web App (Live PWA)
EdTech & Engineering Academy 45 - 95M VND (~$1K - $2K)

Index.vn Masterclass Tech Academy

Masterclass-tier technical learning portal: 16:9 video player, millisecond-accurate synchronized transcript subtitles, in-browser live TypeScript worker sandbox, and cryptographic SHA-256 certificate issuance.

Playhead Engine: TimeSync Subtitle State
Code Lab: In-Browser Worker Sandbox
Launch Live Web App (Live PWA)

10 Enterprise Monorepo Architecture Packages

Khanh Studio's proprietary suite of modular engineering packages reused across the entire production ecosystem

100% PRODUCTION READY
@kt/einvoice-vn
Circular 78/Decree 123 e-Invoicing with XML DSig signing and automated General Department of Taxation verification
@kt/audit-trail
SHA-256 Merkle hash-chain shift close-out audit trail preventing retroactive ledger alteration or deletion
@kt/tenant-guard
Row-Level Security (RLS) context isolation & multi-branch holding RBAC+ABAC governance
@kt/bom-inventory
Multi-level Bill of Materials (BOM) decomposition with automated theoretical vs actual variance auditing
@kt/fleet-routing
VRP 2-Opt & 3D Bin Packing algorithms reducing fleet fuel consumption by up to 28%
@kt/b2b-credit
Automated Hard Lockout freezing delinquent dealer orders past credit limits or D30+ arrears (Circular 48)
@kt/wms-barcode
Warehouse bin location tracking & S-Shape Wave Picking optimized routing
@kt/geo-guard
4-layer spoof-proof geofencing detecting fake GPS coordinates, mock locations, and camera EXIF tampering
@kt/offline-sync
Local-First PWA engine with UUIDv7 conflict resolution and seamless background network sync
@kt/event-bus
Transactional Outbox Pattern & Dead-Letter Queue delivering resilient Exactly-Once messaging
Live Cloud VPS Telemetry SYSTEM NOMINAL • 99.98% UPTIME
Contabo VPS (144.91.88.242) • Caddy 2 HTTP/3 Edge Proxy • RTT < 25ms
Beszel Hub
CPU & RAM Resource Monitoring
beszel.khanhdp.com
PocketBase
Realtime BaaS & Auth DB
pb.khanhdp.com
Meilisearch
Blazing Fast Search <10ms
search.khanhdp.com
Stirling-PDF
Invoices & Thermal K80 Receipts
pdf.khanhdp.com
Caddy 2 Edge
HTTP/3 Cloudflare SSL
Origin Active
TRANSPARENT PRICING

Enterprise Implementation Packages

100% source code handover, self-hosted Docker container setup, zero hidden costs guaranteed.

Starter Package

Ideal for single retail shops, bakeries, fruit boutiques

25,000,000 VND (~$1,000 USD)
  • Mobile-First PWA Web App (React 19)
  • Automated VietQR scanner with 0% platform fees
  • Real-time instant order alerts to Telegram
  • Rapid deployment & full Git source code handover
Consult on Starter Package
MOST POPULAR

Professional Package

Engineered for Fleets, Spas, Sports Arenas, Homestays, F&B

40,000,000 VND (~$1,600 USD)
  • All features from the Starter Package
  • Advanced Executive Admin Dashboard & Analytics
  • K80/K57 thermal receipt printing or kitchen KDS screens
  • Appointment slot matrix / OSRM routing engine
  • Docker VPS orchestration & Litestream cloud replication
Consult on Professional Package

Custom Enterprise Package

Central Kitchens, Fleet TMS Logistics, B2B Wholesale

150M - 500M+ VND (~$6K - $20K+ USD)
  • Full integration of all 10 Enterprise Packages
  • Multi-level BOM decomposition & inventory variance tracking
  • VRP 2-Opt fleet route optimization & SHA-256 e-POD
  • Circular 78 e-invoicing & D30+ automated credit lockout
  • 99.99% SLA & dedicated Lead Architect oversight
Consult on Enterprise Package
TECHNICAL INSIGHTS

Engineering Perspectives & Deep Dives

Battle-tested architectural insights from the Lead Architect on distributed systems, data security, and SME cost optimization.

Multi-Tenant Architecture & Row-Level Security SYSTEM ARCHITECTURE
September 2026 • 6 min read

Multi-Tenant Architecture & Row-Level Security: How to Protect Data Across Multi-Branch Chains?

Analyzing row-level isolation (RLS) mechanisms that prevent cross-branch revenue visibility without the operational overhead of fragmented individual databases.

Web App PWA & VietQR RETAIL TECHNOLOGY
September 2026 • 8 min read

Why Mobile-First PWAs Combined with VietQR Are Displacing Bloated Native Apps?

Comparing deployment costs, customer conversion funnels, and the elimination of 15-30% platform cuts when migrating from marketplace apps to autonomous PWAs.