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Product8 min read·Nov 5, 2025
PosNova: Cloud POS Software for Retail and Restaurants
PosNova is Ullass's cloud POS system for retail and restaurants. What it does, how it compares to legacy POS, and who it is built for.
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Product6 min
SmsNova: SMS Gateway API for Bangladesh
SmsNova is an SMS gateway API for businesses in Bangladesh. Send transactional SMS, OTPs and bulk campaigns over REST, with delivery webhooks.
Product8 min
Free Online Tools: No Signup, No Login
tools.ullass.com is a growing set of free online tools for text, developers, images and converters. No account needed, and always free.
Software Development9 min
The Software Development Process, Step by Step
Discovery, planning, design, build, launch and iteration: what actually happens in each phase, and what you are accountable for.
Database7 min
How to Design a Database Schema That Holds Up
Normalisation, keys, indexes and migrations: a repeatable process for designing a schema you can still change two years from now.
AI8 min
AI Automation for Business: A Practical Start
Where AI automation actually pays off inside a business process, what it costs to run, and the failure modes to plan for before you deploy.
Backend Development9 min
Understanding API Rate Limiting
Token bucket, fixed window and sliding window explained, plus the headers to return and the failure modes behind a cascade of 429s.
Tutorial8 min
Build a Web App With Next.js and Supabase
Ship a working full-stack app on Next.js and Supabase: auth, Postgres, row-level security and deployment, with the code for each step.
Business9 min
What Is a Software Development Company?
What a software development company actually does, how the engagement models differ, and how to evaluate one before you sign anything.
Web Development7 min
What Is TypeScript and Why Use It?
TypeScript adds a static type system to JavaScript. Here is what that buys you in the editor and at build time, and where it does not help.
Backend Development8 min
How to Structure a REST API That Scales
Resource naming, versioning, pagination, error shapes and idempotency: the conventions that keep a REST API maintainable as it grows.
Database8 min
PostgreSQL vs MySQL for Web Applications
PostgreSQL and MySQL differ where it matters for web apps: types, indexing, JSON, concurrency and ecosystem. A guide to choosing one.
Software Architecture8 min
How to Build a Multi-Tenant SaaS Architecture
Shared schema, separate schemas or separate databases: compare the three tenancy models, tenant isolation, and how to pick one for your SaaS.
Web Development7 min
Next.js vs React: Which to Choose and When
React is a UI library, Next.js is a framework built on it. Compare rendering strategies, routing, data fetching, and when each one fits.
Software Development7 min
What Is SaaS Development? A Practical Guide
SaaS development means building cloud-hosted subscription software. Here is what it involves, the core components, and how to scope the work.