Koofr - Koofr offers safe EU based cloud storage with free storage space for life and options to connect multiple cloud accounts (Dropbox, Google Drive, OneDrive) and your personal storages.
DocFetcher - DocFetcher is a portable German/English open source desktop search application.
MultCloud - Multiple Cloud Storage Manager: Migrate, move, sync, copy, backup and transfer cloud files with MultCloud, which supports Dropbox, Box, Google Drive, Mega, OneDrive and FTP, etc.
Everything by Voidtools - Everything. Locate files and folders by name instantly. Everything. Small installation file. Clean and simple user interface.
CloudFuze - Managed Cloud Office Migrations with Unparalleled Security & Performance.
Agent Ransack - Agent Ransack is a tool for finding files and information on your hard drive fast and efficiently.