The provided content appears to be a comprehensive list of various platforms and tools that allow webmasters to submit their websites or URLs for indexing by search engines. This summary organizes the information into categories based on the type of submission service and the search engines involved.

1. Major Search Engine Webmaster Tools

1.1 Google

• Google Search Console: A platform for webmasters to submit their URLs directly to Google for indexing. It provides tools for monitoring website performance and search visibility.
• Submit URL Tool: Allows users to submit individual URLs for faster indexing.

1.2 Bing

• Bing Webmaster Tools: Offers a similar suite of tools as Google, enabling webmasters to submit URLs and analyze their site’s performance on Bing.
• Submit Site URL: A specific tool for submitting URLs for indexing.

1.3 Yandex

• Yandex Webmaster: Provides a platform for webmasters to submit their websites and manage their presence on Yandex.
• Reindexing Tool: Allows users to request reindexing of specific pages.

1.4 Baidu

• Baidu Webmaster Tools: A resource for submitting URLs and managing site performance on Baidu, primarily catering to the Chinese market.
• Link Submission: A tool for submitting URLs to Baidu for indexing.

1.5 Yahoo

• Yahoo Webmaster Tools: Although Yahoo's search functionality is now powered by Bing, it still offers a submission tool for webmasters.

2. Directory Submission Services

2.1 General Directory Submission

• DMOZ: A well-known directory that allows users to submit their websites for inclusion.
• Yahoo Directory: Historically significant, it provided a platform for website submissions.
• A1 Web Directory: A directory where users can submit their websites for inclusion.

2.2 Niche and Specialized Directories

• Business Directories: Sites like Business Seek and Info Tiger cater specifically to business-related submissions.
• Local Directories: Platforms that focus on local businesses and services.

3. Alternative Search Engines and Tools

3.1 Lesser-Known Search Engines

• Gigablast: A search engine that allows URL submissions.
• Swoogle: A search engine focused on the Semantic Web, offering submission options.

3.2 Specialized Submission Tools

• Free Web Submission: A service that allows users to submit their URLs to multiple search engines at.
• Secret Search Engine Labs: Offers a unique submission for various search engines.

4. Automated Submission Services

4.1 Bulk Submission Tools

• Mad Submitter: A tool designed for bulk URL submissions across various platforms.
• Social Submission Engine: Offers automated submission to social networks and directories.

4.2 Free Submission Services

• Free Web Submission: A platform that provides free services to multiple search engines and directories.
• Add URL Services: Numerous sites listed allow free URL submissions, enhancing visibility without cost.

5. Additional Resources

5.1 SEO Tools

• Small SEO Tools: Offers various tools for webmasters, including URL submission.
• Link Centre: A site that allows users to submit their URLs and gain backlinks.

5.2 User-Generated Content Platforms

• Splat Search: A platform that encourages user submissions and content generation.
• Yoofindit: A site that provides a submission form for users to add their websites.

Conclusion

The list provided is extensive, highlighting a wide array of platforms for URL submission across various search engines and directories. Webmasters can utilize these resources to improve the visibility and indexing of their websites. Each tool and service offers unique features and benefits, catering to different needs within the web development and SEO communities. By leveraging these submission options, webmasters can enhance their site's presence in search engine results and drive more traffic to their websites.