01
Customer and partner portals
Secure portals where customers and partners log in to track orders, download documents, raise requests and pay.
FIG 01 · Web App Development
Custom web application development company
Portals, dashboards, internal tools, PWAs and SaaS, built on React, Next.js, Node.js and Python, connected to your data and secure by default. You own the code.
See how it works
FIG 02 · Quick answer
What does a web application development company do?
A web application development company builds software that runs in the browser: customer portals, dashboards, booking and quoting tools, internal systems and SaaS. Elgrith designs and engineers custom web applications on React, Next.js, Node.js and Python, integrates them with your CRM, payments and data, and supports them after launch. You own the code.
- Projects delivered since 2015
- 1,000+
- Clients served
- 250+
- Accessibility target on every build
- WCAG 2.2 AA
- Your code and IP
- 100%
FIG 03 · Why it matters
Web apps hold your data. Build them to last.
A web app is where your customers log in and your team does its work, so security and a maintainable stack matter from day one. Figures from IBM and the Stack Overflow Developer Survey 2025.
01
$4.99M
Average cost of a data breach
IBM puts the global average cost of a data breach at USD 4.99M in its 2026 report, a 12% rise on the year before and a record high.
Source: IBM, Cost of a Data Breach Report 2026(opens in a new tab)02
48.7%
Of developers worked with Node.js
48.7% of all respondents did extensive work with Node.js in the past year, so your back end is easy to staff and hand over.
Source: Stack Overflow Developer Survey 2025(opens in a new tab)03
44.7%
Of developers worked with React
44.7% of all respondents did extensive work with React and 20.8% with Next.js, the front-end tools we build most web apps on.
Source: Stack Overflow Developer Survey 2025(opens in a new tab)
FIG 04 · Definition
Website vs web application
A website mainly publishes content for visitors to read. A web application lets signed-in users do work: enter data, run logic and see results that are personal to them. Many products are both: a marketing website in front of a web app.
| Website | Web application | |
|---|---|---|
| Main job | Publish content and win enquiries | Let users complete tasks and manage data |
| Users | Anonymous visitors | Signed-in users with accounts and roles |
| Logic | Little: pages, forms, search | Business rules, workflows, calculations and approvals |
| Data | Content managed in a CMS | Records, files and transactions in a database |
| Examples | Company site, blog, landing pages | Customer portal, dashboard, booking tool, SaaS |
| Built with | A CMS or Next.js | React or Next.js, an API, a database and auth |
Only need a content site? A website build is faster and cheaper to run.
Website design and developmentFIG 05 · What you get
Web application development services
Seven kinds of web app we design, build and support, each one connected to the systems your business already runs on.
02
Dashboards and internal tools
Replace the spreadsheets: approvals, quoting, scheduling and reporting tools built around how your team works.
03
Progressive web apps (PWAs)
Installable web apps that work offline and on any device, with one codebase instead of separate apps.
04
SaaS web applications
Multi-tenant products with sign-up, roles and subscription billing, ready to sell to many customers.
05
Enterprise web application development
SSO, roles, audit trails and integrations with your ERP, CRM and identity provider, documented for your IT team.
06
Legacy web app modernization
We audit the code, then rebuild or refactor in stages, so the old system keeps running while the new one replaces it.
07
AI features in web apps
Smart search, assistants and document processing on your own data, with access rules that match your roles.
Deliverables
12
deliverables, in writing
Included in every build, written into your fixed quote before work starts.
FIG 06 · Flagship build
Proof: Kenerate AI, a production web app we engineered
Kenerate AI runs in the browser with accounts, a credit balance, 200+ AI model integrations and an agent. We designed and engineered it, and it is live today.
- One app, one login and one credit balance across 200+ AI models
- Kenerate Agent: chat with an agent that picks the model and runs the workflow
- 23+ studios and tools, with up to 4K output
- Works inside Claude, ChatGPT, Cursor and 19+ AI apps through MCP and CLI
Tools: 23+ studios with guides for every use caseDesigned and engineered by Elgrith
- AI models in one app
- 200+
- Studios and tools
- 23+
- Maximum output
- 4K
- Guides
- 500+
FIG 07 · By default
Security and accessibility by default
Not extras on the quote. These practices are part of every web app we build.
06principles
OWASP Top 10 practices
Input validation, safe queries, CSRF and XSS protection, and dependency checks on every release.
Auth and roles
Proven sign-in providers, SSO where you need it, and role-based access on every screen and API.
Encryption
HTTPS everywhere, encrypted data at rest and secrets kept out of the code.
Backups and recovery
Automated backups and a tested restore, so one bad day doesn’t become a lost week.
WCAG 2.2 AA
Keyboard access, readable contrast, labelled forms and screen-reader testing as standard.
Core Web Vitals
Performance budgets for loading, responsiveness and layout stability, checked before launch.
FIG 08 · Buyer’s checklist
How to choose a web application development company
Six things to check before you sign with any web app partner.
06principles
Live work you can use
Ask for a production web app you can open, not just screenshots.
See Kenerate AIA stated stack, and why
They should explain why each tool fits your project, not just list logos.
Security in the plan
Ask how they handle auth, roles, secrets, backups and updates.
Accessibility and performance targets
Ask for WCAG and Core Web Vitals targets in writing.
Code ownership
The code and IP should be assigned to you, in a repository you control.
Support after launch
Ask what happens after go-live: monitoring, updates and new features.
Support and maintenance
FIG 09 · Process · 6 steps
Scope it, prototype it, ship it
A fixed written quote, a working demo every sprint and a security review before launch. You own the code.
- Step 01
Discovery and scope
We map users, roles, workflows, data and integrations, then write a scope and a fixed quote.
- Step 02
UX prototype
Clickable screens for the key workflows, tested with the people who will use them every day.
- Step 03
Sprints with demos
We build in short sprints and demo working software at the end of each one. You can change priorities as you learn.
- Step 04
QA and security review
Automated tests, accessibility checks, performance budgets and a security review before anything goes live.
- Step 05
Launch
Deployment to cloud accounts registered to your business, with data migration and training for your team.
- Step 06
Support
Monitoring, updates and new features, as agreed in your written scope.
FIG 10 · What you get
Everything included
Written into your fixed quote, so you know exactly what you are paying for before work starts.
12items
- Discovery workshop and written scope
- Fixed quote for each phase
- UX prototype and UI design system
- Web app front end and back end
- Sign-in, roles and permissions
- Integrations with your CRM, payments and data
- Automated tests and QA
- Security review and OWASP checks
- WCAG 2.2 AA accessibility checks
- Deployment to your own cloud accounts
- Admin guide and handover
- Full source code, documentation and IP
FIG 11 · Tech & tools
The tools behind the work
Proven, well-supported tools, chosen for your project and set up in accounts your business owns.
- React
- Next.js
- TypeScript
- Node.js
- Python
- Django
- PostgreSQL
- REST
- GraphQL
- WebSockets
- Service workers
- Tailwind CSS
- Playwright
- Vercel
- AWS
- Cloudflare
FIG 12 · Who it’s for
US, UK and India delivery.
Client partners in New York and London, engineering in New Delhi, and one fixed written quote wherever you are.
3 audiences
USA
Custom web apps for US businesses.
A New York client partner and a regular call window agreed around your morning, with a fixed quote in USD.
- Fixed quote in USD
- A call window agreed in your scope
- US privacy laws considered in the design
- Code in your own repository
UK
Bespoke web application development for UK organisations.
A London client partner, and a New Delhi working day that overlaps the UK morning and early afternoon.
- Fixed quote in GBP
- Live overlap with UK mornings
- Designed around UK GDPR
- Bespoke, not templated
India
Web application development from our New Delhi HQ.
Work directly with the engineering team at our headquarters, in your time zone.
- Fixed quote in INR
- Same time zone as the team
- Since 2015
- Full handover and support
FIG 13 · Working with us from the USA and UK
Built in New Delhi. Run on your hours.
Every project gets a point of contact in New York or London and an engineering team in New Delhi. Here is how today’s working days line up, live.
New York
North America
--:--ET
New Delhi team Your working day- Shared working time
- ≈ 3 hours today
- New Delhi is
- 10.5 h ahead
- Live calls, your time
- 9 a.m. to 12 p.m. ET
London
UK & Europe
--:--UK
New Delhi team Your working day- Shared working time
- ≈ 4.5 hours today
- New Delhi is
- 5.5 h ahead
- Live calls, your time
- 9 a.m. to 1:30 p.m. UK
Three ways to work together
- 01
Fixed-scope project
A written scope, one fixed price and a dated plan. Suits websites, apps and MVPs.
- 02
Dedicated team
Designers and engineers on your roadmap every month, billed monthly.
- 03
White label
For US and UK agencies: our work, your brand, unbranded deliverables.
Every engagement
- Fixed quote in USD, GBP or INR after a free 30-minute call
- NDA before discovery. You own all code, designs and content
- A working demo every sprint, not status slides
- Reply within one business day, calls inside your hours
Book a call
Calls on ET or UK hours
FIG 14 · Tech stack
Our web app stack
Chosen per project. Why this stack: it is widely used, so your app is easy to staff; it is fast and SEO-friendly; and it scales from a single tool to a multi-tenant SaaS.
| Layer | What we use | Why |
|---|---|---|
| Front end | React and Next.js | Fast, accessible screens, with server rendering where SEO matters |
| Back end | Node.js and Python (Django) | Node.js for APIs and real-time features, Python for data and AI |
| Database | PostgreSQL | Reliable relational data with strong integrity and row-level security |
| APIs | REST and GraphQL | REST for simple integrations, GraphQL for data-heavy front ends |
| Real time | WebSockets | Live updates for dashboards, chat and collaboration |
| Hosting | Vercel, AWS and Cloudflare | Preview builds for every change, global delivery and room to scale |
FIG 15 · Compare
Custom web app, off-the-shelf software or no-code?
| Custom web app (Elgrith) | Off-the-shelf software | No-code tools | |
|---|---|---|---|
| Best for | Workflows that set your business apart | Standard processes, used as the vendor intended | Simple internal tools and quick experiments |
| Fit to your process | Built around it | You adapt to the software | Within the tool’s limits |
| Integrations | Any API or database | The vendor’s connectors | The tool’s connectors |
| Running cost | Hosting and support you control | Per-seat licences that grow with your team | Per-seat or usage plans |
| Ownership | Code and IP assigned to you | Licensed | Locked to the platform |
FAQ
Frequently asked questions
Straight answers about Web App Development with Elgrith.
A website mainly publishes content for visitors to read. A web application lets signed-in users do work: enter data, run business logic and see results that are personal to them, such as a customer portal, a dashboard or a SaaS product. Many businesses need both: a website to win customers and a web app to serve them.
FIG 16 · Related
Keep exploring
PWA Development
Installable, offline-ready web appsData Visualization
Dashboards, Power BI & TableauCustom Software Development
Bespoke platforms, tools & SaaSSaaS Development
Multi-tenant apps, billing & AIReact & Next.js Development
Fast React and Next.js front endsMVP Development
Web, mobile and AI MVPs you ownAI Development
LLM apps, AI agents & MCPCRM Development
Custom CRMs & HubSpot/Zoho setupsCloud & Deployment
Hosting, CI/CD & DevOpsWebsite Maintenance
Updates, backups, security & uptimeSoftware development, London
Bespoke web apps, portals & CRMsKenerate AI case study
Our flagship build: 200+ AI models in one studio
Free 30-minute call
Tell us what your web app must do. We’ll scope it.
Book a free call. You get a written scope and a fixed quote, and you own all the code we write.
connect@elgrith.com+91 96039 20001Custom software development
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