Stable releases are available in these ways:
Via git at a command-line:
git clone https://github.com/xdcpm/accounts-finance.git git clone https://github.com/xdcpm/spreadsheet.git git clone https://github.com/xdcpm/q-forms.git
Once you have used git, updates are available by using 'git pull' from within each package directory.
Via zip files and svn. Visit at XDCPM on github and choose the package repositories you want to download.