ReliefJet Essentials for Outlook - A large set of useful and easy-to-use tools for every Microsoft Outlook user: Import, export and convert using EML,MSG,TXT and PST formats; remove duplicate items, process attachments and extract addresses; get reports and statistics and even more...

Documize - Enterprise-grade wiki and knowledge management platform

Kernel for Attachment Management - Kernel for Attachment Management software reduces the size of PST file by extracting attachments from emails.

HackMD - Fast and flexible, real-time collaborative markdown, inspired by Hackpad.

Save Attachments from Outlook - Saves attachments from messages, contacts, appointments, meetings, tasks, notes, journal entries and other Outlook items to the specified folder by file mask. It is possible to retain the original folder structure.

ReadTheDocs - Spend your time on writing high quality documentation, not on the tools to make your documentation work.