23+ SaaS Products Built In-House
ZTABS builds SaaS from the ground up — architecture, multi-tenancy, billing, and APIs. We have delivered 23+ SaaS products ourselves and worked with 300+ clients across 500+ projects.
300+
Clients Served
23+
SaaS Products Built
4.9/5
Client Rating
50K+
Users Across Our Products
SaaS development is the process of building cloud-hosted software products sold via subscription — covering architecture design, multi-tenant infrastructure, billing integration, API development, and ongoing iteration. ZTABS has built and shipped 23 SaaS products of our own (including Agiled, Billed, and Chatsy), serving 50,000+ users. We build on Next.js, Node.js, PostgreSQL, and Stripe with deployments on AWS and Vercel.
SaaS demands architecture that scales from day one. Multi-tenancy, subscription billing, background jobs, and API design are non-negotiable. ZTABS brings founder-level experience: we have built products like Agiled, Billed, SchedulingKit, and AgencyPro. We understand the full lifecycle — from MVP to scale — and avoid the pitfalls that force costly rewrites.
We design for proper tenant isolation (schema per tenant or database per tenant), Stripe Billing for subscriptions and metered usage, event-driven patterns for async work, and observability from the start. Our stack defaults to Next.js, Node.js, PostgreSQL, and Vercel or AWS, but we adapt to your constraints. Analytics, cohort tracking, and revenue attribution are built in, not bolted on.
Security is table stakes for SaaS. Every product we ship includes OAuth 2.0 and SSO integration, row-level security in the database, encrypted secrets management, and SOC 2-ready audit trails. We implement rate limiting, abuse detection, and webhook signature verification so your platform stays resilient under real-world conditions — not just in staging.
We also handle the parts most agencies skip: onboarding flows that reduce time-to-value, in-app notifications, usage dashboards for end users, admin panels for your ops team, and feature flags for controlled rollouts. These are the details that separate products users adopt from products they abandon after the trial. Our average SaaS client sees 40% higher trial-to-paid conversion after optimizing onboarding.
Whether you need an MVP to validate product-market fit or help scaling an existing product to thousands of paying customers, ZTABS combines technical depth with practical execution — informed by building and operating our own SaaS portfolio.
Our SaaS-focused services cover development, MVP delivery, API design, and DevOps for subscription products.
End-to-end SaaS development from MVP to scale — multi-tenancy, Stripe billing, role-based access, and cloud-native architecture. We have built and shipped 23 SaaS products of our own, serving 50,000+ users. Next.js, Node.js, PostgreSQL, AWS and Vercel.
Go from idea to a working product in weeks, not months. We build lean, functional MVPs that let you test your concept with real users, attract investors, and iterate based on market feedback — without burning through your runway.
Stop deploying on Fridays with crossed fingers. We build CI/CD pipelines, automate infrastructure, and implement monitoring that lets your team ship confidently — multiple times a day, with zero downtime.
We design, build, and maintain high-performance APIs — REST and GraphQL — for web and mobile apps, integrations, and internal systems. Secure, documented, and production-ready.
We build SaaS platforms with AI at the core — not bolted on as an afterthought. From AI-powered analytics dashboards to intelligent automation platforms, we design and ship AI-native products that users love and investors fund.
We integrate payment gateways into your web application, mobile app, or SaaS platform. From one-time payments and subscription billing to marketplace payouts and multi-currency support, we build secure, PCI-compliant payment flows that maximize conversion and minimize failed transactions.
We use battle-tested technologies for SaaS: Next.js and React for the frontend, Node.js for APIs, PostgreSQL for data, Stripe for billing, and Vercel for deployment.
Next.js transforms web applications into high-performance, SEO-friendly platforms that drive user engagement and boost conversion rates. Leverage its capabilities to streamline your development process and accelerate time-to-market, ensuring your business stays ahead of the competition.
Harness the power of React to accelerate your development process, enhance user experiences, and drive ROI. With its component-based architecture, React allows businesses to build dynamic applications that are both scalable and maintainable, ensuring long-term success in a competitive landscape.
Node.js empowers businesses to build scalable applications with unparalleled speed and efficiency. By leveraging its non-blocking architecture, organizations can deliver seamless user experiences and accelerate time-to-market, driving innovation and growth.
PostgreSQL empowers businesses with an advanced, open-source database solution that enhances data integrity, scalability, and performance. Experience a significant reduction in operational costs while driving innovation and agility in your organization.
Vercel is the platform for frontend developers. Deploy Next.js, React, and static sites with zero config. Edge network, serverless functions, and exceptional DX accelerate your ship velocity.
Stripe powers payments for millions of businesses. Accept cards, digital wallets, and local methods. Manage subscriptions, invoicing, and revenue recognition. Developer-first APIs and webhooks for full control.
Free tools to help you plan and build your SaaS — pricing calculators, tech stack recommendations, and more.
Model MRR, ARR, LTV, CAC, and pricing tiers for your SaaS.
Get expert technology recommendations for your SaaS stack.
Compare costs across 11 LLM models — essential for AI SaaS pricing.
Estimate ROI from adding AI agents to your SaaS product.
Need full-stack, React, Node.js, or TypeScript talent for your SaaS? We provide developers who understand subscription products and scaling infrastructure.
React powers the frontend of millions of applications — from startups to Fortune 500 companies. Our React developers build fast, interactive user interfaces with component-based architecture that scales with your product.
Node.js is the backbone of modern server-side development. Our Node.js engineers build scalable APIs, real-time applications, and microservices architectures that handle millions of requests.
Full stack developers own the entire feature lifecycle — from database schema to pixel-perfect UI. Our full stack engineers ship end-to-end features independently, reducing coordination overhead and accelerating delivery.
TypeScript catches bugs before they hit production and makes large codebases maintainable. Our TypeScript developers build type-safe applications across the full stack, reducing bugs by up to 40%.
Read our guides on SaaS development, architecture, and scaling.
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Common questions about our SaaS development services.
We've built 23+ SaaS products ourselves — Agiled, Billed, Chatsy, and more. We understand multi-tenancy, billing (Stripe), subscription logic, and scaling. We bring founder-level experience, not just agency execution.
From MVP to scale, we bring founder-level SaaS expertise to your product.
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