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- Adobe Adept DRM - EPUB and Adobe PDF
- Licensed Content Protection (LCP) - Readium Web Publication Manifest (RWPM) and its associated profiles
- Findaway - Audibooks distributed by Findaway on behalf of Axis 360 and Bibliotheca
- Overdrive Audiobooks - Audiobooks from Overdrive
- RB Digital Audiobooks - Audiobooks from RB Digital (soon to be merged and distributed with Overdrive Audiobooks)
- DPLA Audiobooks - Audibooks distributed by DPLA Exchange and Feedbooks/DeMarque (soon to be replaced with LCP for Audiobook RWPM Profile)
- Access Control - Time limited signed URLs
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