Startups, what is your project management stack and do you like like your current setup?

At some point every startup, no matter the size, could be a solo founder or multiple people, every startup will have their own project management stack of tools. I think this is a very interesting question because, everyone is different and all startups have their own experience. We have many tools out there which can be used for project management. We have Trello, GitHub Projects, Slack, ClickUp, BaseCamp and Jira etc. There are so many! What is your project management stack? Do you like the tools you are currently using and what would you change about them? For me I am currently focusing on YouTrack, Slack, Discord and GitHub. I am new to Notion, trying it out to see if I like it. I always find there isn't just one tool, I have to use multiple.