o4a.org
The for-all construction carries weight. It signals universality, which is the framing most social programmes want, and it does it without a word of explanation.
O4A reads as opportunity for all, organisations for action, or outcomes for all. Opportunity for all is close to a universal mission statement in the social sector, used by education charities, employment programmes and equity initiatives in every market.
Three characters is unusually efficient for an organisation that has to put its identity on grant applications, annual reports and partner materials constantly. It also means nobody shortens it for you, which is what happens to every long name eventually.
Fixed supply, established convention, the extension the sector uses.
The name is available. Enquiries welcome.