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Links mark with the following icon Link to Non-Government site "External link icon" will take you to an external Non-Government web site.
Testing and Validation of Your Pages
Inclusion of links to non-governmental servers does not constitute an endorsement by the National Weather Service or the U.S. Government of any services or products. 

Link to Non-Government site AccVerify
"AccVerifyT implements programmatic verification and reports all errors or  non-compliance with the standards, plus checklist for criteria that can't be verified programmatically. Verifies the "all else fails" text version. Differentiates between 508 and W3C standards 

Link to Non-Government site
Tools relevant for accessibility include viewing in various screen sizes, view with images are replaced by ALT text. Also HTML and link validation, search engine tools, and other browser compatibility tests.

Link to Non-Government site Bobby.
Developed by CAST, Bobby helps authors determine if their sites are accessible. It does this through automatic checks as well as manual checks. It also analyzes Web pages for compatibility with various browsers. You may either download Bobby and run it locally, or use it through a Web interface on CAST's site. The downloadable version is written in Java and takes advantage of the accessibility support in Java. (1999)

Link to Non-Government site Colorfield Insight
Allows designers to model and predict image legibility for color deficient viewers. Developed by Colorfield Digital Media (2000).

Link to Non-Government site Deque
Deque provides the following automated tools for Web accessibility evaluation and repair:
Worldspace Online Subscription service
Deque Worldspace- enterprise server based solution
Deque Ramp: Ascend / Grade / Personal Edition

Link to Non-Government site Doctor HTML
Created by Thomas Tongue and Imagiware, Inc. (1997). performs minimal accessibility checking but it also verifies links, spell checks and performs some syntax checking. Licenses may be purchased to run the software on a local Intranet. An e-mail address is available for feedback.

Link to Non-Government site Dr Watson
Dr. Watson is hosted as a free service by Addy & Associates (2000). Watson checks per HTML 3.2, as well as Netscape and Microsoft extensions up through version 4.x. Watson can also check many other aspects of your site, including link validity, download speed, search engine compatibility, link popularity, word count, and spelling. No specific accessibility checking. It only runs on the Addy & Associates server.

Link to Non-Government site InSight
SSB Technologies. Interactive evaluation tool designed to help developers create accessible web pages. Also see InFocus (a repair tool). Runs on both the desktop and a server. Runs on Windows 95/98/00/NT, Linux, Unix, and Mac OS. The server software available for installation on local intranets. Support and upgrades are available to users of the software This software claims to be designed so that it is accessible to all users.

Link to Non-Government site Lift
Lift Online and Lift Site are both Developed by UsableNet, Inc.

LIFT Onsite is a subscription based software that allows web designers and web owners to preflight one or many web sites for usability issues and then Find & Fix site issues. Lift Onsite evaluates usability features of a web site, including site navigability, download speed, graphic quality, accessibility, searchability, etc. It runs locally on MacOS.

LIFT Online is only the evaluation portion of LIFT Onsite. It runs on the UsableNet server.

Note: This is also available from Macromedia as a free extension for the Dreamweaver 4 HTML editor

Link to Non-Government site NetMechanic -

NIST WebMetrics Tool Suite
This is a set of four tools used to test the usability and accessibility of a site. It is suggested that you register to receive bug reports and update information. An e-mail address is provided for feedback and questions. (1999)

  • WebSAT - The Web Static Analyzer Tool uses a subset of usability guidelines to analyze a page for accessibility, form use, performance, maintainability, navigation, and readability. As with Bobby, they have automated as many of the checks as possible with many checks requiring subjective decisions by the author. It may also be run through their Web interface or downloaded and run locally on UNIX or Windows 95/NT machines. As such, it may be run on a local Intranet.

  • WebCAT - The Web Category Analysis Tool is a variation upon traditional card sorting techniques. It allows a web designer/usability engineer to test a proposed or existing categorization scheme of a web site to determine how well the categories and items are understood by users. It must be run on a local Web server (on a UNIX, Solaris, or Win 95/NT system).

  • WebVIP - The Web Visual Instrumenter Program is a tool that can be used to conduct traditional user testing on a given set of tasks but in a rapid, remote and automated fashion. WebVIP allows the usability engineer to quickly instrument a web site for user testing. Instrumentation is accomplished through the use of visual programming and automated techniques. It must run on a local Windows 95/NT or UNIX Solaris 2 server.

  • WebVISVIP - The WebVIP Visualization Tool is used to visualize the path data generated by VIP in 3D graphics. It must run on a local Windows 95/NT or UNIX Solaris 2 server.

Link to Non-Government site The Schematron
An XML Structure Validation Language using Patterns in Trees - WAI Content Guidelines. Compares the pattern of a file to the patterns defined by WCAG schema.

Link to Non-Government site The Wave
A tool that helps people perform those tasks that require human judgment (e.g. "Does this ALT text a functional equivalent for this image?" "Does this reading order make sense?"). The Wave displays the ALT text of images and AREAS on the page for comparison with the images, provides numbered arrows to show the linearized reading order, and shows the HTML equivalent (if any) provided for applets. The Wave performs automatic checks (detects missing or suspicious ALT text).

Link to Non-Government site Webbot - the libwww Robot
From the W3C. It is a programmable robot that can report missing "alt" attributes or other specific anomalies. Its primary design goal was to test HTTP/1.1 pipelining features. It runs locally on UNIX or Windows. Users may subscribe to the discussion forum to find examples or discuss issues. 

Link to Non-Government site WDG HTML Validator
From the Web Design Group (WDG). It uses the same engine as the W3C HTML Validator (David Clark's nsgmls) but produces easier to understand error messages. It also supports a wider variety of character encodings than the W3C validator. It is available online or can run locally (supposedly, although information for running it locally was not available on 18 February 2000). You can also run a batch of pages through it.

Link to Non-Government site Weblint
By Neil Bowers (1997). It is a syntax and minimal style checker for HTML: a Perl script which picks fluff off html pages, much in the same way traditional lint picks fluff off C programs. It is available for download on UNIX, Windows NT, Mac or OS/2. Over 20 sites support a Web-based interface in a variety of languages. E-mail and a feedback form are available.

Link to Non-Government site The Web Page Accessibility Self-Evaluation Test
Created by the Public Service Commission of Canada. It is a 27 question, multiple choice survey available in English or French that produces 5 accessibility ratings

  1. highly inaccessible,

  2. much improvement required,

  3. partially accessible,

  4. fairly accessible,

  5. accessible.

An e-mail address is provided to give feedback. There are two versions of the test, one written in HTML 2.0 that requires the user to tally their rating. The other uses JavaScript to tally the rating.

Link to Non-Government site W3C CSS validator.
Validates the CSS used in documents. You may run it through the interface on the W3C server or download it and run it at a Java command line. Since it is Java it runs wherever there is a Java Virtual Machine.

Link to Non-Government site W3C HTML validation service
It is "an easy-to-use HTML validation service based on an SGML parser. It checks HTML documents for compliance with W3C HTML Recommendations and other HTML standards." The service is available through the W3C Web site, although the source code is available for mirroring on other sites. It is known to run on UNIX platforms but may work on others (it has not been tested). 

Check Your Page 3.0

Link to Non-Government site A Real Validator -- True HTML Validation on Windows

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