Hey. I am just some random person on internet that loves contributing to open source (especially stuff that interests me or something that I want to use for myself).

Some notable contributions and projects that I worked on (and still working on):

RuneLite - I found this project one day and after using it for a bit I found that it does not support Linux very well so I tried to fix that so I can use it. Then I did not really liked the very basic UI it had so I tried to improve it, then I found other stuff that can be improved and so on and ended up contributing quite a lot to the project (see here). I do not really play OSRS anymore but when I start playing it again I will continue contributing as well.
CopilotChat.nvim - I wanted to understand how AI stuff works (as it was recent hype), found this plugin, it had very nice basics that I liked but it was mostly in Python so I rewrote the entire thing to lua as I think my second contribution (lol). I also improved the interface heavily and came up with very nice way to display the chat as normal buffer (something other similar plugins got inspired by after, before this the UI for basically all AI plugins for neovim was very clunky). I then continued improving the plugin after (and still am).
maps-of-exile - I needed something to get quick overview of maps, div cards and other related stuff when playing Path of Exile and nothing like that existed, so I decided to make something myself. All important data was already out there someone just had to combine it and display it in some nice way so i did that. The project ended up being quite popular in the community
PathOfBuilding - Yes Path of Exile is the main game I am playing right now so I try to contribute to its open source tooling when I can. My contributions here were another story of me needing something (some of my builds did not worked/were displaying incorrect values etc) so I fixed them. Some notable additions that I worked on here is custom modifiers, improving flask support and flask uptime calculations (my favorite ascendancy is Pathfinder so there is a pattern there), skill sets.

I also made probably hundreds of smaller contributions to various other random stuff that I found or used in past and it was open source and I could improve it in one way or another, but listing all of that would take a lot of time probably.