I'm a big fan of Basecamp and our whole company uses it extensively.
Recently they came out with a command line program to make vibe coding with AIs much easier. With that, I've written a Basecamp ping standalone Mac app that I feel makes it much easier to handle a lot of basecamp chats at once.
New chats are automatically downloaded and shown on the left-hand side. They're color-coded if you haven't yet reply to them. If you write a reply, the color coding changes or you can right click and choose mark as replied.