This page hosts a few web applications that I developed. Most of those are open-sourced with source code available on my github.
This web application allows you to create 48 rows x 84 cols dot matrixc image for Nokia5110/PCD8544 LCD display, and convert it to an array to be used for Arduino or Raspberry Pi programming.
An interactive SMRT map allows users to find out the best route by selecting the starting and destination stations.
Strictly speaking, this is not an web app but a UI library for creating a D3 Dashboard Gauge that can be used in IoT projects for displaying sensor data on the web browser.