The interference between coherent radiation processes in an ensemble of atoms leads to collective effects, as first illustrated by Dicke super- and subradiance. Collective effects are responsible for a variety of phenomena, relevant in fundamental and applied physics. They can enhance atom-light coupling strengths, which finds applications in quantum information processing, or can be used to selectively decouple a system from its environment, improving the storage and transfer of quantum information. Traditionally collective effects have been explored in systems where the atoms are located in a subwavelength region. Waveguides allow for coupling emitters coherently at long distances, where memory effects of the intermediary electromagnetic environment come into play, rendering the dynamics non-Markovian. We explore such waveguide mediated non-Markovian collective atom-field dynamics in collaboration with ongoing experiments. Such systems are pertinent to building quantum networks and distributed quantum sensing.