Zeek is a powerful network analysis framework
Public malware techniques used in the wild: Virtual Machine, Emulation
WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
For full, incremental, compressed and encrypted backups or archives
Base64 encode (or decode) files of any type with this lightweight tool
Visualization of random generators
Set of useful tools for payment service development