The alternatives I can think of are an LSP, that allows navigation and whatnot, but it shows you only one node at a time. Heimdall on the other hand shows you the birdseye view of your project and allows creating (literally) a map in your mind of how things relate to each other.
runprompt
@pedrovgs Heimdall looks amazing! Quick question, whats your workflow with it? do you usually have it open side by side with your agent/editor to see how the project changes? or do you only open it when needed?
Mailwarm
Congrats on your launch!!
@naimz Thanks!