Telephony Swiss Knife for Android
For incoming calls can use Call Manager, a tool that allows you to filter anonymous calls, often unwanted.
It also allows you to decide what to do when there is an incoming call from a particular number: silence and remove the vibration and / or reject automaticamene immediately and / or send a predefined SMS.
For when you want to send a specific SMS to an hour and often forget there is a SMS Sender tool, which lets you choose a number or set of numbers that you send an SMS on a specified date.
Finally, to use when you can not be close to the phone and do not want to hang or simply want to "hurry" who sends the SMS, SMS Responder is a tool that allows you to set the SMS sending to all incoming or coming from a specific contact.