What are some alternatives?
CloudConvert - convert anything to anything - more than 200 different audio, video, document, ebook, archive, image, spreadsheet and presentation formats supported.
AODocs - AODocs is the document management solution recommended for G Suite. Secure your documents, structure your content, & automate your processes
Docomotion - Docomotion offers tools for designing and generating all types of transactional and operational business documents.
TEBookConverter - TEBookConverter is an easy to use ebook converter that uses Calibre.
infoRouter - infoRouter is a EDMS that includes Workflow, Document routing, Electronic Forms, Scanning, Storage, Archiving, Indexing & Records Management
OpenKM Document Management - OpenKM is a document management software to manage content easily.