Membership plugin that works for all sites in a multisite network

I have a multisite wordpress installation with 7 sites in the network. It is configured as http://www.site.com/subsite.

I would like to add a membership plugin that is network activated and can be used across all sites in the network. I’d like paid and free teaser content. Essentially the home page for each site would be free to all visitors but any drilling in to read full articles would require a membership.

Does anyone know of a plugin that works this way? Free or for purchase?
Thank you!!