That said, at small companies where I have worked I have found slack/chatops to be very useful. It's already there. You don't need a separate system. Hopefully you have some other work organization tool (Trello, etc) that you can use to track work (slack is great for real-time discussion and history but I'd hate to have it be my to-do list).
https://halp.com
Maybe best of both worlds?
That said, at small companies where I have worked I have found slack/chatops to be very useful. It's already there. You don't need a separate system. Hopefully you have some other work organization tool (Trello, etc) that you can use to track work (slack is great for real-time discussion and history but I'd hate to have it be my to-do list).