Keyman is a software from Tavultesoft. Myanmar3 layout was developed based on Keyman 188.8.131.52 freely redistributable version. Myanmar NLP lab developed Myanmar3 layout.
Layout - Myanmar3
License: LGPL (Keyboard file only ##not the Keyman software)
Ekaya uses Windows Advanced Text Services Framework to provide a Smart Input method (keyboard) suitable for typing languages using Complex Scripts such as Myanmar (Burmese). This means that it can do context sensitive reordering and substitution of characters as you type. The keyboard rules are written in the same kmn format that the commercial Tavultesoft Keyman uses for its keyboards. The main advantage of Ekaya is that it is free and Open Source (GPL). It uses the Open Source KMFL library to parse the .kmn files. Ekaya was developed by Keith Stribley, Thanlwinsoft.
Layout - Myanmar3, MyWin
OS - Windows
License - Creative Commons Attribution-ShareAlike 2.5 License
http://www.thanlwinsoft.org/ThanLwinSoft/Downloads/Keyboards/Ekaya-0.1.6_x86_64.exe (##64bit Windows)
Updated Maintained Link: http://my.duniakitab.com/ThanLwinSoft/ThanLwinSoft/Ekaya/
KeyMagic Unicode Keyboard Input Customizer - is a smart keyboard input method editor for complex script languages. With this IME, now you can have different type of Unicode keyboard layout and, you can switch to and from. As well as map/edit key layout as your own preferred type layout setting. Keymagic was mainly developed by Thant Thet Khin Zaw.
Layout - Myanmar3, MyWin, Parabaik, ZawgyiL
OS - Windows, OSX, Linux
License - GPL
Note:##The latest versions are needed to be uploaded to project site.
This project has evolved, from a simple plugin which converts romanised Burmese to native text, to a solid multi-font system for typing Burmese at all levels of its computerized history: past (Win Innwa), present (Zawgyi-One), and future (Unicode 5.1). Waitzar was developed by Waitzar Team and mainly by Seth N. Hetu.
Layout - Waitzar, Burglish, Myanmar3, Ayar, MyWin, Parabaik, Zawgyi
OS - Windows, Linux (##Linux version doesn't have full features)
License - Apache License 2.0
(5) NHM Writer
This project was developed by Ravi to fill up the gap for Zawgyi Keyboard users. Over 100,000 rules were written during this layout development. NHM software from New Horizon Media was used.
Layout - Zawgyi
OS - Windows
No License. Free to use and redistribute.
MyMyanmar input methods are packaged with MyMyanmar Language System.
Input Methods - TypeWriter, Phonetics, On Screen Keyboard, MyRoman, Handwriting
OS - Windows
License - No license mentioned, assumed copyrighted since it's a commercial product
Extra notes for Linux
Linux has iBus and Scim for input methods. Both iBus and Scim can import (keyman layout)kmn files. Latest myanmar3 kmn file is available at Myanmar3 project from googlecode.