Custom Web Application Development
When off-the-shelf software stops fitting, we design, engineer, and operate the platform your business actually needs — client portals, internal tools, and full SaaS products, built in Florida and run on AWS.
We don't just build platforms. We operate one.
Clienty is a complete legal practice-management SaaS — client and matter management, Stripe billing, document automation, an AI assistant, and a client portal — designed, engineered, and run end-to-end by PortTech. It's the strongest evidence we can offer: not a prototype, a product real law firms run their practice on.
15,000+
Automated tests across the platform
10+
Third-party integrations
99.9%
Uptime SLA on AWS
Built with: Next.js · React · TypeScript · Tailwind CSS · NestJS · PostgreSQL · Redis · AWS · Stripe · Twilio · SendGrid · Anthropic Claude
Read the full case study
Software shaped to your business
From a focused internal tool to a full multi-tenant SaaS product.
SaaS Platforms
Multi-tenant products with subscriptions, billing, and role-based access — architected to serve many customers from one secure codebase.
Client Portals
Secure portals where your customers track work, view and pay invoices, share documents, and message your team.
Internal Tools & Dashboards
Replace the spreadsheet sprawl — custom admin tools, reporting dashboards, and workflows built around how your business actually runs.
Billing & Payments
Stripe-powered invoicing, subscriptions, payment plans, and checkout flows, integrated end to end.
Integrations & Automation
Connect the systems you already use — calendars, email, SMS, document tools, CRMs — and automate the busywork between them.
AI-Powered Features
Practical AI where it earns its keep: assistants grounded in your data, document drafting, and intelligent search — like the AI assistant we built into Clienty.
From idea to operated platform
A process built to de-risk custom software: scoped versions, visible progress, safe launches.
1. Discover & Scope
We map the problem, the users, and the workflows — then define a scoped first version with a written, fixed quote.
2. Design
UX flows and a polished interface system designed before heavy engineering starts, so you see the product early.
3. Build & Test
Short iterations you can watch: working software every week, backed by automated tests on every change.
4. Launch Safely
Feature flags let us roll out gradually, monitor, and switch anything off instantly — launches, not leaps of faith.
5. Operate & Evolve
We run the infrastructure, monitor, patch, and keep shipping improvements. Your platform gets better every month.
Custom software FAQs
Have a platform in mind?
Tell us what your business needs to do that today's tools can't. We'll give you a straight answer on scope, timeline, and cost — free.