LongeCity is an international, not-for-profit, membership-based organization on a mission to conquer the blight of involuntary death. They offer a range of products and services to advance their mission. Firstly, they provide an open public forum for information and discussion, where visitors can engage in conversations about diverse topics related to science, nutrition, lifestyle, and philosophy.

Additionally, they have a 'social network' for the life extension community, allowing members to connect with like-minded individuals. Secondly, LongeCity serves as a repository for relevant information. Their website features archives for videos, supplement regimens, links, pictures, articles, interviews, and a community database of experts, activists, and volunteers.

Furthermore, LongeCity actively supports scientific research, particularly at the community and student level. They have been involved in various successful research projects, fundraisers, student internships, and have established a program with 'Affiliate Labs' led by young scientists. Lastly, LongeCity engages in community initiatives, taking a crowdsourcing approach to a range of projects.

They also foster international connections and local meetings across the life extension scene. As a membership-based organization, LongeCity is governed by a constitution and maintains friendly relations with other organizations working towards the same mission. They are sustained by donations and advertising, with membership donations underpinning an annual or lifetime membership