YaCy
- A caching HTTP/HTTPS proxy. Pages that pass through the proxy are indexed and can be searched using a built-in HTTP server. [Open Source, GPL]
- http://www.yacy.net/yacy/

JAP unbackdoored
- SecurityFocus BugTraq mailing list reports that the court order against the partners of the project has been suspended and the back-dooring functions in JAP were disabled.
- http://www.securityfocus.com/archive/1/335294

Smart Cache
- Development has been suspended due to security issues. Proxying, filtering cache server. Speeds up surfing and can block ad banners. Also has privacy features such as selective cookie filtering, changing HTTP referrer and browser name. [Open Source, GPL]
- http://scache.sourceforge.net/

PServer
- Java internet proxy server and surveillance monitor written in 100% pure JAVA language. Handles HTTP, HTTPS, SMTP/POP3, FTP, SOCKSv5, TELNET. Also can detected and filtered out annoying Javascript PopUp windows, advertisements and promotions.
- http://mysite.verizon.net/gjcullen/PRXYdoc.htm

MailBridge
- A HTTP tunnel for POP and SMTP to allow access from behind a firewall and acts as a local POP and SMTP server. It uses SWT for the GUI. [Freeware]
- http://www.ohardt.com/mailbridge/

Net anonymity service back-doored
- SecurityFocus reports the Java Anonymous Proxy (JAP), used to anonymise access to the Internet, has been back-doored by court order.
- http://www.securityfocus.com/news/6779

Java Anonymous Proxy - JAP
- Acts as a local proxy between the browser and the insecure Internet. All web pages requested by the browser go directly to JAP, and are multiply encrypted there. The encrypted messages travel through a chain of servers (named Mixes by the inventor of the
- http://anon.inf.tu-dresden.de/index_en.html

Java Proxy
- Lets you access computers behind a firewall. Includes SOCKS and Web proxy as a user program interface. [Freeware]
- http://www.me.lv/jp/

TCPReflector
- Acts as a proxy for port forwarding. Gets around applet limitations on machines it can connect to. [Freeware]
- http://locutus.kingwoodcable.com/jfd/java/tcp/tcp.html

RabbIT
- Speeds up surfing over slow links by removing unnecessary parts (like background images) while still showing the page mostly like it is. Removes advertisements, compresses text, and images. [Open Source, BSD-like]
- http://rabbit-proxy.sourceforge.net/

JProxy
- Provides HTTP tunneling for EJB, RMI, JNDI, JMS, and CORBA APIs for communication between client and J2EE and CORBA services. [Commercial]
- http://jproxy.com/