Top 20 NuGet sharepointapps Packages

Enhance SharePoint Apps - Web MVC with multilanguage capability. Decorate the controller with SetCulture[CultureLocation.QueryString,QueryStringParamName="SPLanguage"] Duplicate your view page to support multiculture. For example, MyView.cshtml, MyView.en-US.cshtml, MyView.id.cshtml.
Integrate SignalR to SharePointApps. Inject authentication token to MVC application.
Turns SharePoint calendar recurrence events into a series of individual events, taking into account recurrence exceptions.