Microplot Ltd produces civil engineering design software. Working alongside a successful civil engineering design consultancy has enabled us to produce advanced 3D design software that works the way civil engineers work, making it very easy to use, yet immensely powerful. Site3D is a powerful software tool for the 3D engineering design of road schemes and infrastructure. Quickly and accurately design whole sites including roads, junctions, roundabouts, footways, surface interfacing, contours, volumes, drainage, housing and more.