iisys

Registration support plug-in using Leaflet. 
I made it to change from GMap, and to register easily from the management screen with the contents of 1 post 1 map. 
Corresponds to OpenStreetMap or Geographical map. 
A map is displayed on the management screen (POST, PAGE, custom post), so specify the location and zoom with the GUI operation. 
Geocoding is not implemented because there was no practical level service other than Google API. 
【日本語】 
Leafletを使った登録支援プラグインです。 
GMapからの乗り換えで、1投稿1地図のコンテンツで管理画面から簡単に登録するために作りました。 
OpenStreetMapまたは地理院地図に対応しています。 
管理画面（POST,PAGE,カスタム投稿）に地図が表示されますので、GUI操作で場所とズームを指定します。 
Geocodingは、Google API以外で実用レベルのサービスが無かったため、搭載していません。 
<a href="https://www.ii-sys.jp/release/1246" rel="nofollow ugc">日本語の記事</a>

WP Leaflet Mapper

Support for switching from GMap to Leaflet. Display a map on the management screen and save LatLng as a custom field at GUI.

Arteo

Arastoo GMap Extended
This plugin can help you embed google map with multiple markers on your web pages.
Use the shortcode [arastoo_gmap] to embed map in your pages.
Language used: English
<h3>Instruction</h3>
<ol>
<li>Upload Arastoo Custom Post Type to your blog.</li>
<li>Install</li>
<li>Activate</li>
<li>Visit plugin Settings > Arastoo GMap</li>
<li>Add google map API key to remove “For development purposes”overlay on the map.</li>
<li>Add latitude and longitude of the center of the map.</li>
<li>Add you marker/s using the format below 
Example 
[“Edison, NJ”, 40.494921,-74.3703325 , 8], 
[“Chino, CA #1”, 33.9976897,-117.7142156 , 2]</li>
<li>Add this shortcode [arastoo_gmap] to your page.</li>
<li>Once shortcode was added, add map height to your style.css 
Example 
#map { height: 470px; }</li>
</ol>

WP Leaflet Mapper vs Arastoo GMap Extended