Psychoanalysts have been united in schools, institutes and professional associations of psychoanalysts for more than 100 years, since Freud. There are many of them : regional, national and international. Some are small and modest, others bring together hundreds or several thousand professionals.
Some associations organize education and train future psychoanalysts, others do not. But all of them regularly bring their members together for a work of reflection, research and common questioning. The fruits of this work can be found in specialized journals and books published around the world, by both small and large publishers.
Personally, I am currently a member of the Association freudienne de Belgique, l'AFB (which is a branch of the Association lacanienne internationale, the ALI).