Mask Surf
Mask Surf is an all-in-one online privacy solution that lets you protect your identity when surfing the Internet and clean your browser traces accumulated on your computer every day. The latter may include the information about your surfing habits, recent web sites, how often you visit those... The Options dialog box may also include the list of anonymous proxy servers that you can use to hide your real identity. ... Proxy addresses should be added by the user prior to surfing the Internet. ... Change proxy?
http://www.thanksoft.com/downloads/msurf_setup.exe - 877Kb - Download - Screenshot

Send-Safe Email Verifier
Send-Safe Email Verifier determines which addresses in mail list are dead and which alive. The program works on the same algorithm as ISP mail systems do. Send-Safe Email Verifier tries to connect to SMTP-servers and simulates the sending of message, but does not come to the message sending. ... Key features: - Supports anonymous checking (required HTTPS proxy list). ... - Ability to set a number of threads working both with DNS and SMTP servers. ... - Ability to save current state and resume it at the next start.
http://www.send-safe.com/ssev.exe - 333Kb - Download - Screenshot