The manosphere is a diverse collection of online websites, blogs, and forums that promote masculinity alongside misogyny and opposition to feminism. It includes communities such as men's rights activists (MRAs), incels (involuntary celibates), Men Going Their Own Way (MGTOW), pick-up artists (PUAs), and fathers' rights groups. Members commonly share the belief that society is biased against men due to feminism and that feminists promote misandry (hatred of men). The manosphere promotes ideas of hyper-masculinity and portrays feminists as ignoring male victims while encouraging false accusations against men. It uses jargon like "taking the red pill," a metaphor for awakening to the belief that men are oppressed in a feminist-dominated society. Despite internal differences, its groups are united by antifeminism and a strong misogynistic stance. The manosphere has been associated with the far-right, alt-right, online harassment, and extremist violence, including mass shootings motivated by misogyny. It has also influenced youth through social media algorithms and is a concern for mental health and internet safety. Major figures known for promoting manosphere ideas include Andrew Tate and Jordan Peterson. The manosphere gained significant attention in the 2010s and has been linked to notable online harassment campaigns and real-world violence. In summary, the manosphere is an online network of male-centered communities that often promote anti-feminist, sexist, and misogynistic views, with varying groups united by a perception of male victimization in society.