From Envirowiki

[edit] Environmental hosts

Hosts that explicitly support environmental campaigns and groups

• http://www.enviro-geek.net
• http://www.green.net.au

[edit] anarchist/other groups

Hosts that support anarchist or other social movements

• http://www.axxs.org
• http://www.tachanka.org

[edit] lists of groups

should be moved on-wiki:

• http://www.autistici.org/en/groups/links.html
• http://riseup.net/ (down the bottom)
• https://en.wiki.aktivix.org/Main_Page#Others