What are some alternatives?
When comparing Global Nest Atlas and PokeMapper, you can also consider the following products
PokeHuntr - PokeHuntr is a website that helps find and identify Pokemon while playing Pokemon Go.
Pokecrew - Crowdsourced Pokemon Go map
PokeWhere - Live Radar Map for Pokemon GO
Poke Radar - Discover the location of any Pokemon
PokeFind.com - Pokefind is a Pokémon map that helps you find Pokémon near your location. View sightings and submit your own. Find Pokémon near me!
Poke Find - Simple, beautiful live radar for Pokémon GO