I would like to use Drupal, Joomla, WP and other well known recognized icons instead of written tags on my website. They would be like 16x16 pixels big.
Is this OK?
I mean it is just for information purposes for the user, which technology is used etc. it is not a commercial project either.
What about asp.net, apple, android and other big names?
Is it ok to use icons like e.g. these guys http://alternativeto.net/category/
I am just asking, because this world is weird and you hear all the time about the patent wars in mass media.
EDIT: Are icons on the website/firefox plugin like wappalyzer.com illegal or not?