Mapus is an open source tool to explore and annotate collaboratively on a map. You can draw, add markers, lines, areas, find places to go, observe other users, and much more.
A nice tutorial that shows how to style an embedded Google map in order to be responsive and centered.
A tiny jQuery plugin for lazy-loading Google Maps.
A jQuery Latitude and Longitude plugin to pick a location using Google Maps. Supports multiple maps. Works on touchscreen. Easy to customize markup and CSS.
WhatsNearby is a jQuery plugin to list and show nearby places around a certain position using Google Maps.
ClassyMap is a jQuery plugin that gives you the ability to embed Google Maps in your site using just HTML5 code.
Mappy.js is a jQuery plugin to select places on a map. As well as picking places, you can add/edit ones to integrate with your own database.
This jQuery plugin takes advantage of Google Maps API version 3 to create an easy to implement store locator. No back-end programming is required, you just need to feed it KML, XML, or JSON data with all the location information.
There are many options to customize plugin, also you can geocode all the locations beforehand, to make sure it was quick and to avoid any potential geocoding errors.
Maplace.js helps you to embed Google Maps into your website, quickly create markers and controls menu for the locations on map.
It requires jQuery and Google Maps API v3 so you need to have both in your page.
MapQuery is a jQuery plugin that you can use to add mapping to your website. Whether you quickly want to add a simple map to a page, or build a feature rich web application, MapQuery is just the thing you need.
A jQuery plug-in to automatically geocode and display a location entered in a text field by a user.
Geolocation is a jQuery plugin to get the location of the users visiting your webpage by using Google Maps API.