+1 Trello and Asana if you must have a software solution
However, if you all sit together, the whiteboard solution is the best. What you’re after is basically a Kanban board, which is what Trello and Asana provide in an (over-engineered for most applications, see below) electronic format.
more senior folk want to have software based solutions
I see this a lot; people, especially and often senior people, when faced with an organisational issue around coordination and/or communication issue think “let’s buy a software tool to fix it!”. It’s rarely the best option.
For a solution that will work, and that people will engage with (which is essential for it to work) ,remember the KISS principle:
Keep
It
Simple
Stupid