Version migration
Where the installable modules of one Odoo version stand in another. A module counts as migrated when its technical name exists there, or when OpenUpgrade records it renamed or merged into one that does. Renames it doesn't know of read as not started.
Repositories
Installable modules per Odoo version, shaded against each repository's busiest one. The bar is 15.0 → 16.0: migrated, in a PR, not started. Most pending work first; pick one to list its modules.
Modules
Each square of Versions is an Odoo version, 6.1 to 20.0, the tall ones 15.0 and 16.0: filled where the module is installable, outlined where it lives on under another name, amber where a migration PR is open. Dependents are the 15.0 modules that depend on it.
Nothing here for 15.0 → 16.0 in OCA/l10n-poland.