[keyP]

Whiteboard - For me, tangible writing helps with creativity and thought processing and a whiteboard saves on paper if it's not going to be a permanent thing (and even if it is, a simple photo of the board for retention).

Google Keep for quick notes on the go with a permanent pinned tabbed in my browser for quick access

Trello for day to day development management but not as detailed as I would in my work, simply as I don't need it to be. Speed is an advantage for solo projects and small teams so adding unneccessary processes reduces that advantage IME.

Specialised comments within Visual Studio to allow me to write comments and easily find them again without disrupting my flow (I believe IntelliJ and other IDE's may have analogous features) https://keyboardp.com/post/40190774577/using-task-list-token...