Proxy Workbench
Proxy Workbench is a unique proxy server ideal for developers, trainers and security experts that displays its data in real-time. You can actually see the data flowing between your e-mail client and the e-mail server, web browser and web server or even analyse FTP in both Passive and Active modes. ... Major Features - See data flow between socket connections - Animated socket connection diagram - 'Pass Through' protocol handler for debugging protocols - Connection failure simulation strategies allow you to simulate: a) Slow or asymmetric Internet connections (bandwidth throttling) b)...
http://pwb-download.tcpiq.com/downloads/PWB.exe - 6Mb - Download - Screenshot

IE Timeout Tuner
This tool can adjust 3 'hidden' registry settings of Internet Explorer to control caching of DNS records, server connection timeout, and caching of server information. It can be useful to change these settings to very low values, especially when testing web-servers with quickly changing DNS... This setting affects both DNS caching and server connections ('keep alive') timeouts. ... However, server connections appear to timeout according to the lower value of this and the Keep Alive Timeout setting.
http://www.simplefailover.com/outbox/ietimeout-se.exe - 44Kb - Download - Screenshot

Cerberus FTP Server
Cerberus FTP Server provides industrial strength secure SSLv3/TLSv1 encryption and powerful FTP server performance without sacrificing ease-of-use. Designed to use very little CPU and memory, Cerberus features a user-friendly interface that can be easily hidden or accessed from the system tray. ... In addition, Cerberus FTP Server offers statistics on connections as well as robust logging capabilities. ... The server is able to listen for connections on multiple interfaces (Multi-homed PCs), integrate with the Windows NT user database or Active Directory, run as an NT service, resume...
http://www.cerberusftp.com/files/CerberusInstallBETA.zip - 1Mb - Download - Screenshot

Easy SMTP Server
Send e-mail messages easily and securely from your portable PC while you are traveling around the world! Every time you change your location connecting your PC to different Internet Service Providers (ISPs), you must reconfigure your e-mail program to be able to send messages via different SMTP... Easy SMTP Server is very fast! ... It may serve multitude of SMTP connections concurrently to use your Internet connection up to maximum. ... Try our Easy SMTP Server for free. ... Easy SMTP Server is supported by all email programs including Outlook Express and Eudora.
http://www.softfolder.com/download/esmtpsrv.zip - 1Mb - Download - Screenshot

Proxifier
Proxifier is a program that allows network applications that do not support working through proxy servers to operate through a HTTP or SOCKS proxy server or a chain of proxy servers. There are many network applications that do not support working through proxy servers and thus cannot be used... + “Proxify” the entire system (force all network connections in the system work through a proxy server). ... Proxifier allows you to: + Run any network applications through proxy server; no special configuration is required for the software.
http://www.proxifier.com/distr/ProxifierSetup.exe - 685Kb - Download - Screenshot

LiteFTP
LiteFTP is a feature-packed FTP server that includes anonymous, shared, group, and superuser access, resume (upload and download), quotas, connection limits, speed per connection limits, advanced access controls, and unlimited accounts. Integrated DynDNS and No-Ip dynamic DNS clients help make... The administrator is given a precise log of everything that occurs and has the ability to monitor and kill connections.
http://www.cmfperception.com/liteftp/plf2_6.exe - 1Mb - Download - Screenshot

RevilloC MailServer
Send and collect all the emails for your home or office network, whilst saving dial up time. The mail server now contains a web proxy server, so you can now view internet web pages from your networked machines. The mailserver is designed to collect all your emails in one dial up connection. ... This mail server is a fully featured SMTP and POP3 server with unlimited connections or accounts, with ease of use being a priority. ... The mail server will work as a standalone server on a shared PC or as a network mailserver.
http://www.revilloc.com/mailserver/mailserver.zip - 5Mb - Download - Screenshot

2X SecureRDP for Terminal Services
Accept / Deny incoming RDP connections by IP, Mac address, computer name and more 2X SecureRDP for Windows Terminal Services dramatically increases the security of your terminal servers by accepting or denying incoming RDP connections by IP, Mac address, computer name, client version or based on... Servers running either in Remote Administration or Application Server mode are supported. ... 2X SecureRDP for Windows Terminal Services is freeware! ... 2X SecureRDP for Windows Terminal Services works with Windows 2000 or Windows 2003 Terminal Services and does not require a client component.
http://downloads.2x.com/securerdp/2XSecureRDP.exe - 1Mb - Download - Screenshot

SSH Tunnel
SSH Tunnel is a powerful encryption and tunneling program that supports SSH1 and SSH2. It has a very flexible port forward system that allows for the assignment of any local addresses (including changing ones like DHCP assigned) as well as remote port forwarding (given your provider... SSH Tunnel's connection limit setting allows you to specify how many concurrent connections you want the software to make to help prevent connection errors on servers that limit the number of simultaneous connections.
http://download.rs4u.com/SSHTunnelSetup.exe - 3Mb - Download - Screenshot

Advanced SMTP Server
Advanced SMTP Server is a system-tray local SMTP server program for Windows that lets you send email messages directly from your computer to recipient mailboxes. Along with a mass mailer the program can be used as a relay server for sending newsletters, distributing messages to different mailing... Advanced SMTP Server is very fast, while sending, it establishes dozens of SMTP connections, and gets the most out of your Internet connection. ... Advanced SMTP Server is able to send thousands of emails per minute with a regular DSL Internet connection.
http://www.softstack.com/download/advsmtp.zip - 1Mb - Download - Screenshot