Plantyflix - Watch Netflix and plant trees
Sidebery - Manage your tabs and bookmarks in sidebar.
This Song Plants Trees - Stream this 30 sec song. Every 100 plays we plant a tree
Tree Style Tab - Tree Style Tab is an all-in-one Firefox extension that provides ability in order to operate tabs as a tree.
Wunder - Impact investing meets Capitalism.
Firefox Multi-account Containers - Sign in to two different accounts on the same site