Google Search Console gives you free backlink data straight from Google, including top-linking sites and anchor text.
Ahrefs Free Checker analyses the top 100 backlinks for any site, with Domain Rating and dofollow status.
Semrush shows competitor backlink strategies and toxic links, with free daily queries.
Ubersuggest tracks referring domains and new or lost backlinks daily, plus Domain Authority.
Moz Link Explorer shows Domain Authority, Page Authority and Spam Score, with free monthly queries.
SEO Review Tools runs instant backlink scans and anchor text breakdowns without an account.
Link target pages in story attachments, use rel tags and share stories on Pinterest for organic reach.