Hyper-crosslinked polymers (HCPs), a relatively new type of polymers with inherent porosity and high specific surface area, are of great interest due to their excellent results in many different application areas. These HCPs are typically synthetised via solvent-based protocols such as Friedel-Crafts and Scholl coupling reactions, which are time-consuming and hazardous. In an effort to promote environmentally friendly synthesis routes, this presentation will focus on bringing together the most recent work that formulates HCPs through a greener and faster alternative, mechanosynthesis. An analysis in the light of green chemistry principles has been performed and so, the mechanosynthesis will be compared to current synthesis routes. The main applications of HCPs will also be presented and analyzed in order to give an overview of the potential of HCPs. Finally, the use of biosourced precursors to obtain HCPs will be discussed to provide an alternative route to obtain still more environmentally friendly HCPs. With this work, the authors aim to provide the necessary background for the development of greener alternatives for the synthesis of these remarkable HCPs.