Leonida Map Tracker is a free interactive map and place tracker for the fictional state of Leonida and Vice City, based on the V17 community map. It lists 858 places, 39 of them marked as official spots, and lets you tick off places you have found, add notes and pins, keep multiple saves and export backups. There is no account and no paid tier. This is a fan-made, unofficial project and is not affiliated with or endorsed by Rockstar Games or Take-Two Interactive.
Fans needed a free way to explore Leonida and Vice City before launch. The builder put the community map in the browser and lets people tick off finds with no account.