INWebsite · instructables.comInstructablesDIY projects, step by stepPricing not specifiedNo account neededDetailsVisit website
THWebsite · thingiverse.comThingiverseReady-made models for home 3D printingFree plan availableDetailsVisit website
TISoftware · tinkercad.comTinkercadYour first 3D models from simple shapesCompletely freeDetailsVisit website
PRWebsite · printables.comPrintables3D models and examples of finished partsFree plan availableWorks on mobileDetailsVisit website