The Alliance for Bhikkhunis
is a clearinghouse for information on bhikkhuni history, activities, challenges and achievements.
Their mission statement:
Work diligently toward the establishment of a thriving Theravada bhikkhuni sangha in the U.S. and abroad.
Encourage the emergence of bhikkhuni Dhamma teachers and support them as they enter communities new to the Buddha's teachings.
Develop community-based viharas which address the practical and spiritual needs of amilies and individuals, enabling lay practitioners to integrate the Dhamma into every facet of their life.