• The Docket Alarm PDF Viewer check out the ctrl+f features (@speedplane)
• PDF Viewer for SproutCore (@nicolasbadia)
• PDF Viewer Panel for the Ext JS 4.1 Framework (@sonnenkiste)
• PDF Viewer Panel for the Sencha Touch 2 Framework (@sonnenkiste)
• Alfresco Share add-on component
• Plone integration
• Vue integration
• Flipbook reading mode
• doq reader mode add-on

• ngx-extended-pdf-viewer, PDF.js integration for Angular
• Hhangular, Angular components using PDF.js
• Polar Bookshelf, incremental reading for PDF files
• LaTeX Base
• Touch Reader with Storage (@digitarald)
• Cubic VR 3D PDFs (@humphd)
• Page flip effect - based on www.turnjs.com jQuery plugin (@MaximS)
• OwnCloud uses pdfjs as document viewer
• Integrating PDF.js with Lunr.js to build a full text indexing ingestion pipeline in Javascript (@garysieling)
• Viewer.js - an embeddable open-source document viewer for the web that uses PDF.js to display PDFs and WebODF to display ODF files
• Candy Reader ports PDF.js to standalone desktop application using node-webkit (@humu2009)
• PeerLibrary, a collaborative reading of academic publications, promoting open access and open science
• meteor-pdf.js, PDF.js bundled for Meteor, works both on client and server side (node.js integration)
• pdfjsgui Small python script to run pdf.js as a semi-standalone application
• WebAppFind OCR demo - Applies Ocras.js or GOCR.js to a PDF file opened via right-click from the desktop (the Firefox add-on is currently Windows only; ports welcome!)
• slidr.io Presentation hosting platform build with a pdf.js based player! (@nesQuick)
• Librelio The Librelio HTML5 reader is based on pdf.js. It features page curl effect and multimedia overlays (video, slide shows). An example is available here.
• ckanext-pdfview The PDF viewer of CKAN - the technology behind hundreds of data portals like data.gov and data.gov.uk, uses pdf.js.
• Ignite Player pdf.js-based ignite talk presentation player, from local files or dropbox.
• Word Lookup, a fork of PDF.js with a feature where the user selects a word and presses a shortcut key to bring up its meaning within the viewer.
• Orion browser integration, a WebKit-based browser that ships PDF.js.

The deployments can be tracked via 'intitle:"PDF.js viewer" next' or '"Toggle Sidebar" "Automatic Zoom"' search queries