Yet another Vietnamese input keyboard for Mac OS


If you found NAKL useful, please consider donating to it. All the money will be given to Nụ Cười Trái Tim charity funds.

Last updated: June 2014


About NAKL

NAKL is an open source Vietnamese input keyboard for Mac OS. Its engine is based on XVNKB, a well known input keyboard on Linux. NAKL is fully compatible with all the Mac OS versions from 10.6 (Snow Leopard) to 10.12 (Sierra).

Current Version

Latest stable version is NAKL 0.2. You can also build NAKL from source with Xcode 4.0 and later.




Support or Contact

Please report issues on the GitHub issue tracker.


1. Receving error message "Can't be opened because it is from an unidentified developer" when openning NAKL

This problem occurs from version 10.8 (Mountain Lion) onward. To fix this, open System Preferences -> Security & Privacy -> in General tab, tick on option Anywhere for Allow applications downloaded from.

2. NAKL doesn't work after installing

For Mountain Lion (10.8) or older verions

In order to use this application, the option "Enable access for assistive devices" must be enabled. Open System Preferences -> Universal Access (for Mac OS 10.8 Moutain Lion, open System Preferences -> Accessibilty -> Keyboard), tick on "Enable access for assistive devices".

For Mavericks (10.9) or later versions

Open System Preferences > Security & Privacy > Privacy > Accessibility. Click the padlock icon in the lower left corner and enter your admin password. Once it's unlocked, drag NAKL app from Finder or from Applications panel into the apps list in the System Preferences window then tick the checkbox


If NALK is running, please quit and open it again.