Marlon Leong
← Index

Software

Apps, tools, and systems I’ve shipped.

Fleek × a16z Hackathon, 2026

Fleek Curated

Hackathon submission for Fleek: a Gemini-powered tool that turns an outfit photo into a shoppable, sourceable wardrobe — matching garments to wholesale listings, with AI-previewed customisation options for each piece.

TypeScript · Gemini

Fleek Curated preview

Lablabs.ai Gemma 2 Challenge

Lingograde

Real-time speech analysis evaluating pronunciation, grammar, fluency and vocabulary, with CEFR/IELTS-aligned scoring, built on Gemma 2.

TypeScript · Gemma 2

Lingograde preview

Open source

Windy.gg

macOS window manager built for power-user hotkey workflows. Later open-sourced for the community to build on.

Swift · React · TypeScript

Windy.gg preview

Y Combinator Startup School

Deploy.me

Container deployment tool letting developers ship from a single TypeScript file and one command — built to optimise compute cost and prevent surprise burn.

Go · Svelte · React · Docker

Deploy.me preview

Shipped — iOS & Android

Soundly

Offline Flutter app for musicians: real-time pitch tuner with frequency visualisation, metronome, and practice recording, built on an on-device audio pipeline.

Flutter · On-device audio DSP

Berlin International Hackathon · ongoing

NeuroScreen

Invite-only client–practitioner matchmaker: proprietary screeners, clinic referral workflows, and CBTBA worksheets — matching assist, not a diagnostic product.

Rails · Ruby · Tailwind · Invite access

NeuroScreen preview

Ongoing

Political.space

Platform for political discussion and engagement — debates, campaigns, news, and outcome markets in one place. Longer-running personal project; refreshed and extended over time.

Next.js · TypeScript · Prisma · PostgreSQL

Political.space preview

Berlin International Hackathon, Oct 2024

Angel Flights

Real-time flight booking app with live pricing via the Amadeus API — Vue frontend and NestJS backend, delivered as a production-ready system at the Berlin International Hackathon.

Vue · NestJS · Amadeus API · Docker

Property · concept + waitlist

Hestia Grid

Property concept that co-locates owned GPU clusters in residential buildings — rental income plus compute revenue, with waste heat used to cut heating costs.

Concept site · Waitlist · Financial model

Hestia Grid preview

Cursor Hackathon

Dachshund AI

Autonomous AI agency pipeline for local businesses — Hunter discovers leads, Triage diagnoses need, then Builder / routers / Closer ship outreach and solutions. Built for a Cursor hackathon.

Next.js · Supabase · Hunter pipeline

Dachshund AI preview

Halted

FileHaven

Personal durable file-store experiment (T3 / Next.js). Taken offline — halted after misuse concerns; not an active product.

Next.js · Prisma · tRPC · ClamAV