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CSE HTML Validator Std/Pro v9.0 is now available!

What's the difference between the standard and professional editions?

When you place an order, your order will be securely processed through Plimus. Plimus charges US sales tax only for CA residents. Plimus also offers many different payment options, including credit card, PayPal, e-check, online bank transfer, direct debit, and France's Carte Bleue.
(What's the difference?)
Save $$$. See below for a special TopStyle bundle offer.
Government Information | Site Licenses | Upgrades | Upgrade Policy | Classroom Use
After placing an order, please wait for download and registration information to be emailed to you. This will allow you to download a registerable version and register it.
Licenses are NOT limited by number of websites/domains.
If you need more information before buying then please visit the detailed ordering page with complete ordering information.
Please contact us if you have any problems or questions about ordering.
Optional Priority Support and Maintenance (PS&M)
Optional priority support and maintenance (PS&M) (for one and two year periods) is now available! This includes priority support for technical support questions as well as guaranteed free major upgrades during the priority support and maintenance period.
To add PS&M to your order, simply choose the appropriate option on the order page to add PS&M for the desired period (one or two years). The below prices are valid only when buying new licenses or when buying version or edition upgrades for existing licenses and are in addition to the new license or upgrade price.
Priority Support and Maintenance Prices for New Licenses and When Upgrading |
Standard Price Each (US $) |
Professional Price Each (US $) |
| One Year |
$49 |
$49 |
| Two Years |
$98 |
$98 |
| --- 30 DAY MONEY BACK GUARANTEE ON NEW LICENSES --- |
Special TopStyle 4 Bundle
Buy CSE HTML Validator and TopStyle 4 together and save! TopStyle contains powerful tools for building standards-compliant web sites. Using TopStyle, you can edit your HTML, XHTML, and CSS in a single application. And, of course, TopStyle integrates with CSE HTML Validator, so you can check your documents with CSE HTML Validator without leaving TopStyle. TopStyle Website (new window)
Buy TopStyle 4 and CSE HTML Validator Standard together for only $99 and save almost $50 compared to buying them individually!

NOTE: When buying the TopStyle bundle, you can optionally upgrade to CSE HTML Validator Professional for an additional $60. Also, if you buy the standard edition, then you can always upgrade to the professional edition later.
TopStyle Website (new window)
30-Day Money Back Guarantee
AI Internet Solutions offers a 30-day money back guarantee. If you are not completely satisfied with CSE HTML Validator, then we will gladly give you a refund if you tell us within 30 days of your purchase.