Pack Attachments for Outlook - Compresses Outlook attachments into one or more ZIP archives by file mask.
Documize - Enterprise-grade wiki and knowledge management platform
Twinbox - TechHit.com - timesaving utilities and add-ins for Microsoft Outlook.
HackMD - Fast and flexible, real-time collaborative markdown, inspired by Hackpad.
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...
ReadTheDocs - Spend your time on writing high quality documentation, not on the tools to make your documentation work.