Software Developed by Opt-In Software
Web Proxy Checker v.1.5.18.170
Free Web Proxy Checker Check SOCKS4/SOCKS5/HTTP/HTTPS proxies with and without authentication. Format of proxies with authentication: proxy_user:proxy_pass@proxy_host:proxy_port.
Opt-In List Manager
Email list management utility. Can process files of unlimited size, works fast and easy to use. Has rich set of functions: extracting mails, merging, splitting, filtering, combining and randomizing lists, verifying domains. List Manager can process
Opt-In List Extractor
A simple but powerful utility to extract and combine multi column email lists. It allows you to extract or exclude emails of specified domains from your source mailing lists. Also you can store emails of different domains into separate files or combine