HEN is a member of the Halton Nonprofit Network and the Ontario Nonprofit Network. Both of these organizations were formed to provide support to non-profit organizations regardless of their focus. The Sustainability Network provides support to Canadian environmental non-profit organizations.
Rather than reproduce the resources provided by these other organizations, here are their links:
Halton Nonprofit Network — http://www.haltonnonprofitnetwork.ca/
Ontario Nonprofit Network — http://www.ontariononprofitnetwork.ca/
Sustainability Network — http://www.sustainabilitynetwork.ca/