I have worked on many projects in my career. Here I present a few projects which I own, allowing me to publish their source code.
A Simple Webmail System
It allows users to create accounts, and send email messages to each other. It provides a capability to create folders, and sort messages.
Selenium Test Suite for Simple Webmail System
This is a test suite written using Selenium 3 API. It implements a number of functional tests for the Simple Webmail System, using most major browsers. You can see the suite source code on my GitHub in C# and Java.