WPServeur

WPServeur is a French host that accepts WordPress sites and nothing else, with SSH, WP-CLI and git access, per-site PHP configuration, one-click clones and centralised plugin updates across sites. Plans are metered by number of sites, storage and monthly visits, and prices are published in euros. It sponsors WordCamps in Paris, Lyon and Marseille.

Worth recording: the legal notice identifies WPServeur as part of the CELESTE group and names a sister company as the hosting provider, so the infrastructure is not its own.