MailStore - MailStore Home - A 100% free single-private-user desktop solution
AODocs - AODocs is the document management solution recommended for G Suite. Secure your documents, structure your content, & automate your processes
MailSteward - MailSteward : The Ultimate E-mail Manager for Mac OS X
Docomotion - Docomotion offers tools for designing and generating all types of transactional and operational business documents.
Gmvault - Backup the emails in your Gmail account.
infoRouter - infoRouter is a EDMS that includes Workflow, Document routing, Electronic Forms, Scanning, Storage, Archiving, Indexing & Records Management