Shelter & building
AppropediaAppropriate technology, self-reliance
Not added yetMap: huts & bush sheltersHuts, shelters, campsites, toilets
Power
EnergypediaSolar, off-grid and renewable energy
Not added yetEnergy & engineering videosTED talks on solar, wind, invention
Not added yetRepair & make
iFixitRepair guides for almost anything
WikibooksFree textbooks and manuals
Not added yetCD3WDVillage tech: pumps, tools, building
Not added yet