Polytechnique.org is the online portal connecting students and alumni of École polytechnique, known as the “X.” It serves the school’s community through a combination of public resources and private services reserved for registered polytechnicians. The site helps members stay connected and access practical tools, including lifetime email, an online directory for finding current students and former graduates, a community forum, professional contacts, and information about polytechnic associations. Visitors can also explore links to websites related to École polytechnique and learn more about the portal and its team.

For recruiters and companies, Polytechnique.org directs users to Wats4U, a service for contacting École polytechnique students and alumni, posting job opportunities, consulting an inter-school directory, and browsing a résumé database. Polytechnicians can register or sign in to use member services and review the benefits of joining. The portal is presented as a resource for both community life and career connections, supporting engagement among students, graduates, associations, and employers.