Open Source C++ Keyboards

A Vietnamese keyboard for Windows and Linux

Albert is a blazing-fast, plugin-based keyboard launcher written in C++/Qt.

Deskflow is a lightweight productivity tool designed to streamline window and workspace management. It features hotkey-driven app launching, workspace switching, window snapping, search快捷启动, and minimal UI. Built with modern frameworks (likely Electron or Qt) and geared toward power users wanting efficient workflow control.

Karabiner-Elements is a powerful key remapper for macOS.

Input‑Overlay is an open-source OBS Studio plugin for Windows and Linux that visualizes keyboard, mouse, and gamepad inputs on screen during livestreams or recordings. It presents inputs as overlay source with configurable presets.

This is the open source core component of Synergy, a keyboard and mouse sharing tool. Control your computers with one mouse and keyboard. Control multiple computers using only one keyboard and mouse. Focus on developing software, designing, gaming and remove time switching between operating systems. Throw away the extra keyboards and spend time where it really matters. Simplify your workspace by combining multiple computers into one. Easily copy and paste between computers with no effort at all. Keep your passwords and sensitive data secure with TLS encryption. Key, mouse and data all sent fast and securely, directly over your local network. Advanced customization settings give you complete control of your setup. The next version is being built from the ground up by combining the latest technologies, Node.js and React, with the rock-solid stability of C++.

Easy to use Windows keyboard layouts switcher.

Тapper — keyboard layout switcher for X Window System and Wayland. Tapper runs in background, when an assigned key is tapped, Tapper activates the corresponding keyboard layout. "Tap" means that a single key is pressed and quickly released, so (1) no other keys are pressed at this time, and (2) period between pressing and releasing is shorter than keyboard repeat delay (usually it is 0.5 s, but it depends on desktop settings). Tapper key feature is using modifier keys for switching keyboard layouts without losing modifier's functionality. Tapper works for GNOME, GNOME Classic, Cinnamon, i3, KDE, LXDE, LXQt, Mate, Ubuntu, Xfce desktops. There are prebult RPM packages for Fedora, Mageia, OpenMandriva, openSUSE, source tarball for configure && make is also available. Tapper is free software.

Typing Commander is an offline touch typing software for both beginners and advanced typists. If you experience problems with downloading the program, see the page https://typingcommander.com/downloads/ for alternative ways of downloading.

This project is for a virtual keyboard on the silkscreen area of a PalmOS device. It supports multiple key layouts editable on the handheld itself; previewing on the screen; and macros to start programs or input keys. 10x4 Qwerty layout included.

KKBSwitch is a KDE panel applet which indicates the active keyboard layout (language). It is useful in conjunction with X Servers with the XKeyboard extension which have been configured to have more than one keyboard group

EDK has been developed to be a free keyboard layout configuration tool + GUI library. In order to be able to have english (latin), russian (cyrillic), chinese,etc keyboard layouts.It supplies Qt extended classes that support any unicode character.

OpenMAIA. Free Virtual Keyboard Engine for disabled people. An Open Source project totally written in C++ with support of wxWindows library.

EzerKb is a virtual keyboard for Windows. It emulates a keyboard with, for example, Russian, Greek, or Hebrew characters without actually installing a keyboard driver for that language. EzerKb works with most (but not all) Windows programs.

On-screen keyboard (with "numeric keypad only" option) for touch-screens.

SAW - Special Access to Windows - is a programmable on-screen keyboard. It is a powerful tool for providing Access to the Windows operating system for people who need alternative Switch or Pointing device input options. The latest SAW 6 version update was supported by the AEGIS project (http://www.aegis-project.eu/). It is fully Windows 7-10 compatible, supports Unicode, includes its own "Blade" word prediction and abbreviation expansion engine, can interact with the CCF-SymbolServer for graphic symbol support (http://www.conceptcoding.org/), and adds several other features to make creating interfaces easy for those who use alternative inputs. Note (February, 2019): We are experiencing problems with recent MS DotNet updates breaking backward compatibility which is blocking new installations of SAW 6, and stopping the Blade word prediction from working in installed SAW 6 packages. We are working on solving this problem ASAP. Sorry for the inconvenience!

Q10 is the QT based application GUI for he popular x10 daemon heyu which controls home automation appliances. It was built with porting for embedded systems in mind and used in touch-screen displays as it also features a virtual on-screen keyboard.

CVK - Clavier virtuel personnalisable pour des personnes atteintes d'un handicap. -- Custom virtual keyboard for people with reduced mobility.

Dvorak Command is a Mac-style Dvorak keyboard layout switcher for Windows. When a Ctrl+<Key> shortcut is pressed, the Dvorak layout is temporarily converted to a Qwerty layout. Thus, pressing Ctrl+J becomes Ctrl+C; Ctrl+K becomes Ctrl+V and so on.

There are several problems using windows to typeset in farsi. This project is for supplying several small and useful programs to correct some of these problems for you. For example a keyboard layout, etc.

Virtual keyboard for PocketPC with "fat" buttons. So you can type by fingers without stilus.

FvwmKb is a module for Fvwm and Scwm window managers that makes it more comfortable to work with several Xkb keyboard layouts. For the focused window it stores the currently locked Xkb group (keyboard layout) in its internal database and restores it when

Hunixboard is a Desktop Keyboard with several funktions. Optimized for Touchscreen small size (Virtual keyboard for X11) ~ Switchable Board with 4 different boards ~ one board optimized for using with Instant Player ~ Resizebale ~ always on Top

Helps you not to confuse the keyboard layout during text editing by showing the flag of the input language near the mouse cursor.

Youtube demonstration: http://youtu.be/SU5VvrWWf7s?hd=1