HTMLSpy
HTMLSpy is a tool for who are learning html and who want to know how are created the best sites in the world. You visit sites, collect html sources and them part for using in own pages. Other HTMLSpy function is visual validation of html code. If source has error(s) the first line does not... You can correct source and check it again. ... HTMLSpy include colored html viewer and editor for changing and comment code. ... It means that html code is not well-formed.
http://www.onlyscreensavers.com/files/htmlspy.exe - 320Kb - Download - Screenshot

Encrypt HTML source
Encrypt HTML source is a solution for full web site protection. It will encrypt your HTML, ASP, JavaScript, VBScript,SHTML and CSS source code and will make impossible stealing and reusing it in other websites. Password protect web page. Advanced web site images protection. ... Encrypt HTML source will also keep away all web content filters and other censor software - they will not be able to analyze your web site and block it - this may increase the number of visits to your site several times. ... Hide HTML source from email spiders and site rippers.
http://www.encrypt-html.com/EncryptHTML.zip - 2Mb - Download - Screenshot

Secure HTML Lock
Lock html, cryptate and protect your webpages from theift! Make your website secure and prevent theft of your html source code. Secure HTML Lock is easy and fast to use, no html knowledge needed. Several bonus features included like email address protector and popup generator. ... Get Secure HTML Lock NOW and be safe! ... Don't let anyone steal your source ... ... You know how much energy and money it takes to create a unique and professional website ...
http://www.submitad.com/files/securehtml1.exe - 4Mb - Download - Screenshot

Source Viewer
Source Viewer is a php coded web page allowing you to display the html and php source code of files on your server directly in a browser. Using standard browser View Source functions php code is not displayed as it is processed by the server prior to the page being delivered to the browser. ... Source Viewer allows the html and php code to be displayed. ... Source Viewer allows you to show the underlying code of your web pages directly to site visitors in their browser. ... An Allowed Directories function ensures visitors can only access the source code of files in directories you nominate.
http://www.softswot.com/downloads/svhp.exe - 54Kb - Download - Screenshot

BlazingTools Instant Source
Instant Source opens the additional toolbar at the bottom of IE window. It shows HTML source of the current page, selection or an item under the cursor. Also it shows and lets you to save all external files on a page, include Flash movies, style sheets (*. ... Why is Internet Explorer's View Source command inconvenient for viewing HTML? ... - The View Source command displays HTML in the Notepad without any syntax highlighting. ... - The Web Browser (we will talk about Internet Explorer only) does not show the same HTML source as you see!
http://www.blazingtools.com/downloads/i_isrc2003.exe - 317Kb - Download - Screenshot

AdrianSoft Webmaster Tools
Software to Convert html into php,asp,cgi,perl,jsp,javascript,vbscript,text, compress and encrypt html source code, protect html source code, create php-nuke modules,block, create popup, create...
http://202.67.13.19/~imels/adriansoft/webmaster_setup.exe - 2Mb - Download - Screenshot

HTML-Encrypter
Do you ever wanted to protect your homepage against copyright validation? With HTML-Encrypter you can encrypt the source code of your HTML files. The files look normal in any Bowser but the source code is not human readable. Protect your Know How now!
http://www.cadkas.de/htmlencrypt!.exe - 441Kb - Download - Screenshot

Encrypt HTML Pro
Web Source Protector is a software to protect your web pages and prevent others from viewing and reusing your web page source code, including HTML source code, JavaScript, VBScript, text, links and graphics, thus protect your hard work and unique design on the web. ... In addition to encrypt the source code and make it impossible for people to read, Web Source Protector also takes some additional measures to further protect your web page, such as disable right mouse click, disable link display in status bar, disable text selection, disable off-line use, disable page printing, disable IE6...
http://www.mtopsoft.com/download/enchp.zip - 781Kb - Download - Screenshot

SourceFormatX Source Code Formatter
SourceFormatX is a powerful all-purpose automatic source code formatter and beautifier to format, indent and beautify C, C++, Java, Object Pascal (Delphi), C#, PHP, ASP, VB, VBNET, VBScript, JavaScript and HTML Components source code with customizable options automatically and rapidly. ... SourceFormatX can export source as HTML and RTF File with syntax highlighting, compare and autoscroll the difference of the original source code and the formatted source code when you want to know the effect of formatting as you wish.
http://www.textrush.com/download/sourceformatx256.exe - 1Mb - Download - Screenshot

IE Source
View HTML source code of all frames on the page! IFRAMEs are supported, as well. Download and try it for FREE.
http://www.softcab.com/ftp/ie_source.exe - 49Kb - Download - Screenshot