Dynamics CRM 2013 Mobile Apps (tablet and smartphone)

Official links to download the Microsoft Dynamics CRM 2013 Mobile Apps for tablet and smartphone devices.

Tablet versions

Windows 8 (x86, x64 and RT devices)
http://apps.microsoft.com/windows/en-us/app/microsoft-dynamics-crm/93772212-7b72-4aee-bc4e-b1adb7712ebe

iPad (iOS 6.0 or later)
https://itunes.apple.com/en/app/microsoft-dynamics-crm/id678800460

Android (4.2 or later)
https://play.google.com/store/apps/details?id=com.microsoft.crm.crmtablet

Smartphone versions

Windows Phone 8
http://www.windowsphone.com/en-us/store/app/dynamics-crm/bdf6ad14-8ff3-4db1-a9d5-336c50ef13ee

iPhone (iOS 6.0 or later)
https://itunes.apple.com/us/app/microsoft-dynamics-crm-for/id723891307

Android (4.0 or later)
https://play.google.com/store/apps/details?id=com.microsoft.crm.crmhost

Get the current user inside a Workflow

Inside CRM 2011 Process editor it's not possible to get the current user, in some cases a reference can be necessary (specially for automated workflows) in order to set the right user when the workflow is used to create or assign records.
A Custom Workflow Activity can be created for this purpose, taking advantage of the InitiatingUserId property.

using System;
using System.Activities;
using System.Collections.Generic;
using System.Runtime.Serialization;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Workflow;

namespace WFUtils
{
    public class GetCurrentUser : CodeActivity
    {
        [Output("Current User")]
        [ReferenceTarget("systemuser")]
        public OutArgument<EntityReference> CurrentUser { get; set; }
        protected override void Execute(CodeActivityContext context)
        {
            IWorkflowContext workflowContext = context.GetExtension<IWorkflowContext>();
            CurrentUser.Set(context, new EntityReference("systemuser", workflowContext.InitiatingUserId));

        }
    }
}

After the Custom Activity is deployed using the Plugin Registration Tool, a new step is available

and the output parameter (Current User) can be used inside other steps