Semantic Kompakkt is a free and open source toolchain for the viewing and annotation of 3D models, and other visual media within a linked open data (LOD) environment. Consisting of Wikibase (for metadata storage as LOD) and Kompakkt (for publishing and annotating 2D, 3D and AV media), Semantic Kompakkt offers a range of functionalities via user-friendly graphical interfaces and open APIs. It is developed by the Open Science Lab at TIB Hannover.