jellybooks

This is a plugin that simplifies the integration of the Jellybooks DISCOVERY service API, and embeds interactive book samples within product pages on a WordPress site:
<ol>
<li>It connects to the Jellybooks DISCOVERY API to retrieve book samples for a given ISBN.</li>
<li>It automatically adds interactive book samples to your book product pages via our excerpts.js library.</li>
</ol>
Note: For the avoidance of doubt, admins must have a valid Jellybooks DISCOVERY account and API key to use this plugin.
For further information about the API: https://www.jellybooks.com/apis/excerpts/index.html 
For further information about the excerpts.js library: https://www.jellybooks.com/apis/excerpt_integration/index.html. That page also explains some of the various options that are configurable in the plugin admin interface.
<h3>Source code</h3>
The plugin can be downloaded and its source code can be viewed and modified (as per Open Source license). The plugin also contains Jellybooks’ <a href="https://github.com/Jellybooks/excerpts-js" rel="nofollow ugc">excerpts.js library</a> in a minified form for improved performance.
A non-minified version is included within the assets directory. The full source code for the excerpts.js JavaScript and CSS files can be found in the <a href="https://github.com/Jellybooks/excerpts-js" rel="nofollow ugc"><code>excerpts.js</code> repository</a>.

Jellybooks DISCOVERY for Publishers

The Jellybooks DISCOVERY for Publishers plugin adds instant book samples to your book product pages.

There is more to writing on WordPress than blogging.
WriteShare plugin will give you books with chapters. Turn WordPress into a full featured writing community.
With WriteShare, site admins get a writing platform. It’s easy to set up full on writing communities for education. Classes and courses using various Learning Management Systems (LMS) like LearnDash, LifterLMS, Namaste, Sensei, WP Courseware, WP LMS, LearnPress, will find the WP WriteShare plugin a must for all writing and course work submissions.
Fanfiction, recipe, journalism/news, longread… hell, any site that invites writers or members to submit text, graphics, or both will want to use WriteShare.
WriteShare uses advanced taxonomy features which offer flexibility in how content is organized for both writers and readers, making your WordPress more of a writing platform than a blogging site.
Writers will upload their submissions in a simple yet organized format. Writings will be easily searched by not just author and date (thatâ€™s the blogging way), but with more search options.
WP WriteShare is going to be super easy to use and set up, lightweight, flexible.
Videos:
WriteShare Overview – Site Admin Dashboard and Front End: https://youtu.be/n__S16KyRac
Adding Books with Chapters: https://youtu.be/ZHn9JqThcXc

WriteShare Writing Community Platform

Reminds me of medium. Code is well written and documented, flexible. Some issues with a couple of themes but nothing unresolvable with a bit of custom CSS ;)

Flexible frontend content management

WriteShare will turn WordPress into a full featured writing community, not just a blogging community. Site members can post books with chapters.

Jellybooks DISCOVERY for Publishers vs WriteShare Writing Community Platform