The community building organizations on this page are either geared exclusively for transgender and gender non-conforming folks, or they include the larger LGBT community as well.

MtF Mentors
This site helps to make it easier for all individuals on the MtF (Male to Female) gender spectrum to find other MtFs locally for support and encouragement.
Web: www.mtfmentors.org
FtM Mentors
This site helps to make it easier for all individuals on the FtM (Female to Male) gender spectrum to find other FtMs locally for support and encouragement.
Web: www.ftmmentors.org
I AM: Trans People Speak
I AM: Trans People Speak is a project to raise awareness about the diversity that exists within transgender communities. It gives a voice to transgender individuals, as well as their families, friends, and allies. Read stories and/or submit your own.
Web: www.transpeoplespeak.org
The Trans 100
The Trans 100 celebrates excellence within the trans community. The list provides an overview of the breadth and diversity of work being done in, by, and for the transgender community across the United States. It also acts as a resource for the transgender community and our allies around the globe and increases positive visibility for the trans people as a whole.
Web: www.thetrans100.com
We Happy Trans
We Happy Trans is an inclusive online space created so that trans people could share stories of positive experiences, and so the wider world could see that like any other community, we too thrive, struggle, and overcome.
Web: www.wehappytrans.com