Definitely an organization that lives up to its name being very open and supportive. My manager is amazing—very direct without being rude, always giving feedback without making you feel small.
Cons
The organization has work in half the UN member countries, but staffing is dominated by those from the Americas and Europe. Only regional roles (and few exceptions) go to people from other regions. A few of the higher ranked staff are inefficient but get by because of their strong team members (and ironically unaware of it).