Hieu Nguyen

I am the Co-Founder of TOT, with a background in website and mobile app development. I have over 13 years of experience in project management, as well as in developing websites and mobile applications.

AI
Top 20+ Free AI Image Design Software Highly Rated by Designers
Discover the top 20+ free AI image design software tools highly rated by designers, from Midjourney and DALL-E to Canva AI and Adobe Firefly…
Website Design & Development
Professional, SEO-Friendly Custom Website Design Services
Compare template-based and custom website design, learn what makes a website truly professional and SEO-friendly, and discover why TOT is the optimal partner for…
Data Security & Encryption
What Is SHA? A Guide to the Most Common SHA Versions
SHA (Secure Hash Algorithm) is a family of cryptographic hash functions used to protect data integrity. This guide explains what SHA is, how it…
Security Protocols & Standards
What Is HTTPS? How It Works and How HTTP and HTTPS Differ
HTTPS protects data exchanged between a browser and a server using TLS. Learn how HTTPS works, how it differs from HTTP, and how to…
Security Protocols & Standards
What Is DNS Over HTTPS? How DoH Works and How to Enable It
DNS over HTTPS (DoH) encrypts DNS queries inside an HTTPS connection for better privacy. Learn how DoH works, what it protects, and how to…
Website Design & Development
Top 35 Reputable, Professional Website Design Companies
A curated list of 35 reputable, professional website design companies — with strengths, services, and contact details to help you choose the right partner.
AI
Top 50+ Free AI Tools Most Widely Used in 2026
A curated roundup of 50+ popular AI tools with genuinely useful free versions in 2026 — spanning chatbots, search, writing, image and video generation…
AI
Top 15 Best AI Coding Tools in 2026
A practical roundup of the top 15 AI coding tools available today, comparing their AI models, IDE integration, coding agents, and pricing so you…
AI
What Is Gemini? An Overview of Google’s Multimodal AI Model
Gemini is Google and Google DeepMind's family of multimodal AI models. Learn what Gemini is, its standout features, versions, pricing, and how to get…
App Design & Development
What Is a Mobile App? Development Process and App Design Costs
A mobile app is software built for iOS and Android that taps into device hardware. Learn the native, hybrid and PWA approaches, the 6-step…