SkyCiv is a cloud-based provider of structural engineering software and APIs, founded in 2013 by Paul Comino and Sam Carigliano (operating as E-Street Developers Pty Ltd). Its browser-based platform covers 3D structural analysis, beam and section analysis, 2D CAD, and design modules for steel, concrete, timber, aluminium, connections, foundations and load generation, with an open API and mobile app. It serves engineers in over 160 countries, with offices in Sydney and Chicago.