Skip to content
Jason Leonard

Complete archive

All Projects

Software, websites, data tools, experiments, and ongoing builds. Everything is listed here, not only polished or featured work.

Software & web

Project archive

GitHub profile

E-Bike Showroom & Management System

Commissioned product showroom and management website for Niaga Bersama Abadi.

Production website

  • HTML
  • CSS
  • JavaScript
  • Cloudflare

Bike Store Inventory & Sales System

Desktop operations system for stock, sales, service, FIFO lots, users, and reporting.

Desktop application

  • C#
  • .NET 8
  • WinForms
  • SQLite

SlabWorth

Trading-card identification, condition analysis, pricing research, and saved history.

AI-assisted web app

  • React
  • Cloudflare Workers
  • D1
  • R2

React Analytics Dashboard

Browser-based data profiling and visual exploration for uploaded datasets.

Data application

  • React
  • Vite
  • D3
  • Cloudflare

Developer Portfolio & Content Platform

This responsive portfolio, D1-backed content APIs, and secure administration tools.

Web platform

  • HTML
  • CSS
  • JavaScript
  • D1

Creative technical work

Additional projects

Steam Workshop

KAI CC 206 Re(Logo) Indonesia

Indonesian locomotive livery work.

Transport Fever 2

  • — views
  • — subscribers

Kereta Mild Steel Livery 2014–2025

Narrow-gauge 1067 mm rolling-stock livery pack.

Transport Fever 2

  • — views
  • — subscribers

KAI Kereta Stainless Steel 2018

2018-logo livery for Indonesian stainless-steel rolling stock.

Transport Fever 2

  • — views
  • — subscribers

K3 MFR Quality of Life

Compatibility and visual consistency improvements.

Transport Fever 2

  • — views
  • — subscribers

Pindad SS2 Temporary RHS Compatibility

Magazine and optic compatibility addon.

Arma 3

  • — views
  • — subscribers

JOS Tentara Nasional Indonesia

Contributor to an Indonesian armed-forces team mod.

Arma 3

  • — views
  • — subscribers

Game mods, reskins, and other hobby creations. Live activity is available for Steam Workshop entries.