Since that time, second generations of these packages have been released as well as many more new utilities.  The technology is slowly evolving as new algorithms and strategies for Internet filtering are developed.

However, the use of Internet filtering software, particularly in libraries, has engendered a debate about the constitutionality of such software and the implications of publicly insituting what is essentially a mechanism for censorship. Concerned agencies such as the American Civil Liberties Union, the Electronic Frontier Foundation, and the Electronic Privacy Information Center have written reports and press releases regarding the subject. Sites and organizations devoted condemning or advocating the use of filters, usually in libraries, have surfaced, such as Peacefire (against), Filtering Facts (for), and Censorware (against). Organizations for parent's on-line such as Enough Is Enough and America Links Up have incorporated filtering software resources as tools for assisting parents while sites and organizations concerned with free speech have identified the use of filters as a threat to democracy and a violation of the Bill of Rights.