TOOlover · Repositories · Writing · X
I’m a software engineer and indie builder based in Ho Chi Minh City, Vietnam. I build developer utilities, backend systems, and small internet products with a bias toward software that is fast to open, useful without ceremony, and easy to share.
Stop losing momentum to one-off scripts, tab-hunting, and repetitive cleanup. TOOlover puts the small developer utilities you need in one fast, free browser toolbox—no signup required.
Use it to format and validate JSON, compare or convert data, test webhooks, inspect JWTs, generate secure secrets, preview Markdown and HTML, clean up text, and explore lightweight system simulations.1
Try a tool, solve the interruption, and get back to building. Open TOOlover →
| Project | Focus | Why it is useful |
|---|---|---|
| programing-best-practices | Programming fundamentals | Practical best practices for beginners and working developers. |
| AI-Powered-Coding-Tools | AI-assisted development | A guide to working effectively with AI-powered coding tools. |
| derek-power | Developer workflow | A structured development workflow for Kiro that avoids “vibe coding.” |
| email_detected | Ruby tooling | A Ruby gem for checking whether an email address exists. |
| threads_client_ruby | API client | An unofficial Ruby client for Meta Threads. |
| Layer | Tools I reach for |
|---|---|
| Backend | Ruby · Go · Node.js |
| Frontend | React · JavaScript · HTML · CSS |
| Data | PostgreSQL · MySQL · Redis |
| Cloud | AWS · Google Cloud · DigitalOcean |
| Product mode | Ship small · keep it useful · make it public |
| Signal | Current public value |
|---|---|
| Public repositories | 93 |
| GitHub followers | 149 |
| GitHub location | Ho Chi Minh City, Vietnam |
| Writing | System design and software engineering insights |
These profile signals are read from my public GitHub profile and may change over time.2 For always-current activity, visit my repositories and profile overview.
- Product: thetoolover.com
- Writing: System Design Insights with Derek
- Social: @derek_in_tech on X
- Code: @dereknguyen269 on GitHub
I like coffee, developer tools, and engineering work that quietly saves people time.
Footnotes
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TOOlover, current public product page and feature descriptions. ↩
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Derek Nguyen’s public GitHub profile, accessed August 25, 2026. ↩