The most used estimators and appraisal websites:

1- Estibot.com

2- DOMAININDEX.com

3- Valuate.com

4- GoDaddy.com

5- Sedo.com

6- Freevaluator.com

7- Epic

8- Siteprice.org

9- Worthweb

10- Mysitewealth

11- Website Outlook

12- Statchest