across!

Mouse Without Borders allows you to reach across your PC's as if they were part of one single desktop. Using Mouse Without Borders you can move your mouse between the 3 or more screens, even though one of them is attached to a different PC from the other two. You can also move files between the 2 computers simply by dragging them from one desktop to another. In fact you can control up to four computers from a single mouse and keyboard with no extra hardware needed – it’s all software magic, developed by Truong Do who by day is a developer for Microsoft Dynamics. The software is easy to setup and in addition to enabling drag and drop of files, you can lock or log in to all PCs from one PC, and as a whimsical bonus is it allows you to customize your Windows logo screen with the daily image from Bing or a local collection of pictures. »

spacedesk is a windows network display monitor software that expands the Windows desktop computer screen to other computers over the local area network.

Input Director is a Windows application that lets you control multiple Windows systems using the keyboard/mouse attached to one computer. It is designed for folks who have two (or more) computers set up at home and find themselves regularly sliding from one system to the other. With Input Director, you can share a single keyboard/mouse across a set of computers. Computers with multiple monitors are fully supported. You switch which system receives the input either by hotkey or by moving the cursor so that it transitions from one screen to the other (in a very similar fashion to a multi-monitor setup). »

Mouse and Keyboard Sharing to control a Windows or Mac PC with the mouse and keyboard of any other PC.

Typeeto is an app that enables you to use your Mac keyboard as a Bluetooth keyboard for other devices such as iPad, iPhone, Apple TV, Android device, etc. Now use a full-scale keyboard to type in a text and it will be displayed real-time on your device screen. You do not need to install any other apps on your device – just connect it to Mac and start typing.

Really smooth and easy to use mouse and keyboard sharing between multiple machines. Set up the location of other shared desktops and simply arrange them just like the standard multi-monitor setup screen were all used to.

Multiplicity enables a user to control multiple computers with one keyboard and mouse. Multiplicity is installed on networked PCs to create a virtual KVM switch with two modes of operation. In Seamless keyboard and mouse mode the mouse cursor can be freely moved across multiple PCs each with their own monitors. In Remote keyboard, video, mouse mode many PCs can be controlled from a single PC while sharing a monitor; the controlled PCs are not required to have an attached monitor, keyboard or mouse. Any combination of Seamless and Remote modes can be simultaneously active across multiple PCs. »

Type2Phone: Use your Mac as keyboard for iOS devices

SynergyKM is a GUI wrapper around the synergy command line tool that lets you easily share a single mouse and keyboard between multiple computers with different operating systems without special hardware.

Control your Droid from your desktop with MOUSE and KEYBOARD.

1Keyboard is a virtual bluetooth keyboard application for OS X

Use your Mac to type on your iPhone, iPad or Apple TVs (2nd, 3rd and 4th generations).

iKeyboard can turn your Mac into a Bluetooth keyboard for iPad/iPhone/Mac.

Mocha keyboard turns your Mac computer into a cable free Bluetooth keyboard, which can be used with a phone or tablet. Apple iPhone, iPad and Android devices are supported.