What module should I use to save a module settings in a feature?
Many modules store their settings in variables, that's what Strongarm is good for : it can help you export those variables with features.

My usual way of finding out which variable to export (and exporting it) :


see the source HTML of the form where you set the values
in the "name" attribute you will most often find the name of the variable
use drush vget *that_variable* to check if it exists

drush vget is useful because it searches all variables that have a name similar to the string you provide, so sometimes you can do some testing to see other variables that could be useful

if you confirm the name of the variable, put it into the feature's info file

features[variable][] = that_variable

run drush fu your_feature

this will export the variable's value



The other module you heard off might have been Features Extra. Me personally i don't find it that useful anymore.

There is a free video on drupalize.me about features. And an article on d.o.