I started using WordPress back in 2006 for my personal website shailan.com. It was just starting to be popular back then with its most popular theme Kubrick. I really liked the ease-of-use, then I stayed because of constant security updates.
Previously I was using my own personal site to share WordPress tips & tricks. But now all those posts are moved to my other WordPress site wpassist.me
Here are the plugins I have created for WordPress:
Still Usable Ones
Not Recommended But Still Available