Looking for Party Finders? Visit https://xivpf.com/
Though this page is loaded via data from plugins, you don’t need the plugin to access it. 
Players that would enjoy contributing to it only need to setup Dalamud and install Remote Party Finder. 

https://xivsim.com/
Practice game/raid raid mechanics with your raid group. 

https://universalis.app/
Crowd sourced marketboard information for FFXIV

Step up your glamour game

https://ffxiv.eorzeacollection.com/glamours

https://www.ffxivcollection.com/

https://twitter.com/search?q=%23gposers&src=typed_query