To-do manager, notepad
Widgets (calendar, sticky notes, etc.)
Portable, versions for GNU/Linux, Windows, ...
Free and Open Source
Plugins (add-ons, image viewer, RSS reader, and more)
Install Makagiga in ubuntu
First you need to install Java using the following command
sudo apt-get install openjdk-7-jdk
Now you need to download .deb package from here once you have deb package you can double click on it to install.
Open the terminal and run the following command
sudo dpkg -r makagiga