Three characters on the .org in the X-for-Y form. T4E reads as technology for education, training for employment, or tools for everyone.
Technology for education is the strongest. Edtech in the nonprofit and institutional sense is a large sector: foundations funding classroom technology, ministries running national programmes, and organisations working on access and connectivity for schools. The naming convention is already standard there, and the .org is the extension those bodies use.
Tools for everyone suits accessibility and open-source work, where the whole premise is broad access.
Three characters is close to ideal for an organisation whose name has to sit on grant applications, partner slides, and conference programmes without crowding anything else out. And the 4-as-for construction means a reader parses it correctly without being told.
The name is available. Offers welcome.