La cartographie SIG en ligne ou Web mapping: les outils «libres» Web mapping client comparison v.5. This comparison aims to serve as a basis for those seeking a first approach to web mapping technologies at the client side.
In the fifth version the Italian project GisClient was added and the other clients' data was updated. There is a newer version of this article. To visit it click here. Comparison of JavaScript mapping libraries? Commercial APIs (Google,Bing, Yahoo) Using any commercial API leaves you at the mercy of whatever changes the provider makes to the API or Terms of Service.
What happens for example if suddenly your local government portal that uses Google Maps suddenly has adverts popping up all over it? Want to reuse your JavaScript Google Maps code for an Intranet site? You'll find yourself having to pay the $10,000 licencing fee. Microsoft often have more defined and fixed terms for their services (if paying) so there may be less of a risk here.
Esri. Open Layer.