AutoApps

This should help to voice your inner conversations.

Everything you need to know about AutoRemote

Create a clipboard manager with AutoTools WebScreens and Tasker

A single profile for all your AutoNotification needs?

Get the Google Train updates before you reach the station

While you could wake up your PC from a mobile directly, having a dedicated server capable of doing so is the best solution. The reason is simple. You can hook up as many devices as you wish with a single endpoint. This is why Raspberry Pi is perfect for this.