DocGen - Static website generator
Pics.io - Pics.io is a cloud service that people can use to manage their creative content and files, collaborate with their peers on this content, and then share it with their clients. Read more about Pics.io.
openSourceCM - Web-based legal document processing and contract management
Google Drive to Slack - Slack notifications whenever you work on Google Drive docs
LogicalDOC - A document management system such as LogicalDOC can help your organization better manage business processes and put order in the chaos of documents every day run your business.
Invision - Prototyping and collaboration for design teams