In the Tilde Publishing family of websites:
Tilde Skills Tilde skills, an imprint of Tilde Publishing.
Publishing courseware tailored to TAFE, RTOs
and vocational education.

http://www.thetildegroup.com/aus/skills
Tilde University Press Tilde University Press, a new imprint of
Tilde Publishing. Publishing textbooks in niche educational markets.

http://www.tup.net.au
 
til·de n.   pronunciation: tld or 'til-d&

1.
A diacritical mark ( ~ ) placed over the letter n in Spanish to indicate the palatal nasal sound (ny), as in cañon, or over a vowel in Portuguese to indicate nasalisation, as in lã, pão. From Spanish, an alteration of the obsolete Catalan title, originally from the Mediaeval Latin titulus meaning 'superscription'.

2.
A mathematical symbol meaning "approximately" or "is similar to", also used to indicate negation, i.e. "not", in logic.

3.
A special typographic character found on most keyboards. In some operating systems, including UNIX, the tilde is used to represent the current user's home directory. On web server systems, the tilde is frequently used as the first character for a user's home directory in the file system.

4.
A niche educational publisher dedicated to publishing the best possible educational resources that offer flexible content at the right price.