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

Deploy tooling with a human start: an MVP so friends could spin up a server and play together — later generalised toward cheaper, clearer container deploy.

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

AI governance meets human social capital — discourse, advocacy, and organising attention and capital toward human goals under entropy.

Next.js · TypeScript · Prisma · PostgreSQL

Political.space preview

Paused · Amadeus self-service sunset

Angel Flights

Flight search and booking monorepo (Vue + NestJS) built on Amadeus Self-Service APIs at the Berlin International Hackathon. Paused after Amadeus decommissioned that portal (July 2026) — live lookup and booking no longer available without an enterprise deal or a supplier rewrite.

Vue · NestJS · Amadeus API · Docker

Property · concept + waitlist

Hestia Grid

Property concept for human–compute cohabitation: GPU clusters in residential buildings — rent, compute revenue, and waste heat warming homes.

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

Identity · jewelry · custody

CleoKey

Wearable cryptographic key as jewelry — a fungible, rotatable physical credential for authentic identity and authorization among trusted actors (human, corporate, or AI).

Cryptography · NFC · QR / Blender · Shamir / custody

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