STIK is a platform that gathers Speech, Texts and Images of Knowledge. It allows browsing and navigating through collections of multimedia, facilitating access to archives in the domain of Knowledge resources. STIK includes a back-end with a specific automatic metadata extraction pipeline, a front-end with innovative interfaces for navigating within a document and a specific implementation of a search engine with dedicated key-word search functionality. It gathers multimedia contents from Canal-U, a French institution that exploits audiovisual archives produced by Higher Education and Research, with various formats and various academic disciplines. STIK is a contribution to the emerging domain of Digital Humanities.