eLibSearch

A subscription library with probably the best selection of titles - now with unlimited access. You can read both online and offline in the Scribd iOS and Android app. Most titles available worldwide. Browse books available in the Scribd library here. Sign up for Scribd here.

Unlimited access to over a million ebooks in one subscription. Some magazines and audiobooks also included. Mostly self-published titles. Free trial available. Browse books available in the Kindle Unlimited library here. Sign up for Kindle Unlimited here.

A subscription library for learners and students. Perlego's focus is textbooks, technical books and non-fiction. Unlimited access to ebooks with a free trial. Browse books available in the Perlego library here. Sign up for Perlego here.

A subscription library for technical and business books. It is designed for those who read to learn - access to online courses is also included. Read in the Safari Books iOS or Android app, or in your web browser. You can sign up for a free trial without a credit card. Browse books available in the O'Reilly Learning library here. Sign up for O'Reilly Learning here.

Unlimited reading - hundreds of thousands of ebooks available. Browse books available in the 24symbols library here. Sign up for 24symbols here.

The Scribd subscription includes unlimited audiobooks in addition to ebooks, with a free trial. Browse books available in the Scribd library here. Sign up for Scribd here.

Unlimited audiobooks and ebooks from the BookBeat library, with a 2-week free trial. Browse books available in the Bookbeat library here. Sign up for Bookbeat here.

Unlimited access to the Cengage library of textbooks, business and tech books. 4-month subscription. No free trial. Currently US only. Browse books available in the Cengage Unlimited library here. Sign up for Cengage Unlimited here.

You can borrow ebooks for free from OpenLibrary’s selection of hundreds of thousands of scanned ebooks, accessible from anywhere in the world. All you need is an email address to sign up. Browse books available in the OpenLibrary library here. Sign up for OpenLibrary here.

Local libraries worldwide provide ebooks and audiobooks for free through OverDrive. You will need your library card to sign in. Browse books available in the OverDrive library here. Sign up for OverDrive here.

Unlimited access to fiction and non-fiction ebooks and audiobooks in a single subscription. Browse books available in the BookMate library here. Sign up for BookMate here.

Free ebooks to download from the public domain. Browse books available in the Project Gutenberg library here. Sign up for Project Gutenberg here.

Browse books available in the Bookmate library here. Sign up for Bookmate here.

Audiobook library with a discounted trial for 3 months. This is not an unlimited subscription, you get 1 audiobook credit for each month you are subscribed to the service, additional ebooks are charged separately. Browse books available in the eStories library here. Sign up for eStories here.