License

Open Source GPL

SEO Filter is available under the GNU GPL version 3 (General Public License) and under our own Commercial License.
Under the GPL, anyone is at liberty to freely use and distribute SEO Filter provided they abide by the terms of the GPL.
It is a requirement that the authors of SEO Filter are given credit for producing the software. This requires that any site owner who is installing or running SEO Filter should leave the hyperlink to http://seofilter.org in the footer of each site they produce or operate. This link should not be modified and be entitled "Powered by SEO Filter". Credit given to SEO Filter in this way helps support our efforts to offer SEO Filter as a free system.

Commercial License

If a user purchases a SEO Filter Commercial License, SEO Filter may be operated free of the GPL and without needing this credit. However, other Commercial License terms apply and SEO Filter may not be redistributed.
There is a Single-site Commercial License which allows SEO Filter to be used on a single site (website or extranet), on a single URI address or Multi-site Commercial license should be purchased.
Under a Commercial License, SEO Filter is still available in open source form, so that developers may still modify the SEO Filter code for their own needs.

 If you want to purchase a license please send us an email at sales at seofilter dot com