A closer look at what we've built — the problems they solve, the stack behind them, and the details that make each one worth using.

One of the most recognized Vietnamese programming blogs — deep dives on Java, Spring Boot, software architecture, cloud and AI.
Thousands of articles and tutorials help developers go from fundamentals to production-grade systems, written from real engineering experience.

A modern examination platform for schools and institutions, built for scale, integrity and speed.
From question banks to proctoring-friendly delivery and instant grading, OEP gives educators a reliable way to run exams online.

A digital home for family history — preserving heritage and connecting generations.
Interactive trees, shared archives and private spaces make it easy for families to record and pass down their story.

Scheduling and statistics for football leagues, clubs and organizers.
Automated fixtures, live standings and player-level stats replace spreadsheets for leagues of any size.

Split bills with roommates, trips, and friends in seconds. Scan a receipt, pick a split, settle up — GBillio handles the math.
Built for group living and travel, GBillio turns a pile of receipts into a clear, fair split everyone can see and settle from their phone.

The lunar calendar, made for everyday life — lunar and solar dates, personal events, public holidays and reminders in one calm, modern calendar.
Create an event on a lunar date and Lichio repeats it every lunar year, from memorial anniversaries to lunar birthdays, with reminders exactly when you need them.

Create lucky moments for your event — create a program, invite participants, draw live and announce the winners, all on one platform.
Participants join by link or QR code without an account, every draw is committed before it is revealed so results are provably fair, and quick random tools cover everything else.
Read the engineering stories, product decisions and lessons behind GPX Labs.
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