Domain appraisal

DomainIndex.com
Domainindex.com offers single and mass appraisals of domains of more than 100 TLD´s, a large collection of tools for domainers and webmasters as well as public information about the domain market, such as price developments, market overview and statistics on registrations and much more.
NamePros.com
100% Free Domain Appraisals from the world's largest community of domainers. Real domainers share their expertise on how much domains are worth and why! NamePros – Everything you need to thrive.
Estibot.com
Free domain appraisal and domain productivity tools. Estibot is the domain valuation engine of many domaining services and marketplaces.
NameWorth.com
NameWorth offers intelligent domain appraisals to ensure you buy and sell your domains for what they are really worth. Our tests have shown we are up to 316 times more accurate than other domain appraisal services and the NameWorth estimates are in-the-ballpark up to 96.77% of the time when compared to top domain sales. With close to 20 years in the domain industry and experience in selling close to 1,000 domains, we built NameWorth from the ground up because we needed a service that could reliably price domains. We did this not only for our own domain investing, but also because we needed a service that could reliably power our automated tools and marketplaces.