Sites and apps similar to W3DIR include KnowledgePicker, which is free. Other options are Best of the Web Directory, Curlie Directory, LinkDir and Top Services Directory. In total there are five SEO Tools like W3DIR.
Community-driven catalog of learning resources. Links to resources are organized by topics and rated/reviewed by users so you see which ones are the best. It's free and open for everyone.
Best of the Web Directory is a commercial web directory providing websites categorized topically and regionally. Affiliate program available.
United States
Curlie is the largest human-edited directory of the Web. It is constructed and maintained by a passionate, global community of volunteer editors.
A directory script to make niche and micro-niche websites. The script is very simple and it can be used to build a categorized web directory for personal and informative purposes.
Top Services Directory is an online platform that helps users quickly find trusted, verified service providers across multiple industries and locations.
India
