What are the servers that provide map tiles for free, with the ability to download without restrictions?

Question

OpenStreetMap

Good afternoon, please tell me what servers exist that can provide map tiles for downloading (without restrictions), the task is such that on an offline network you need to display a map using the Leaflet library, but I just can’t find a server that would give a pack pending tile download requests

Answer 1

there is opentopomap.ru, I think the author will be happy to use it
https://forum.openstreetmap.org/viewtopic.php?id=68308
p.s. right now the provider has technical problems, because the tiles are given with breaks, they promise to fix everything. well here it is :)

Answer 2

Deploy a mapnik server locally and download tiles from it as much as you like.

Answer 3

Look here
https://wiki.openstreetmap.org/wiki/Tile_servers