Alternatives
Sourcer vs Screaming Frog
They solve different jobs. Screaming Frog SEO Spider is a mature desktop crawler for large inventories. Sourcer is a free, browser-based view-source + SEO snapshot for one public URL at a time.
Where Screaming Frog is stronger
- Crawling thousands of URLs, exporting bulk CSV/Excel inventories
- Custom extraction, scheduling, and deep technical SEO workflows on a workstation
- Licensed desktop features aimed at agencies and in-house SEO teams
Where Sourcer fits
- Quick check of one page’s HTML and on-page SEO signals from a phone or laptop
- No install — open viewsource.tech, paste a URL, scan
- Shareable report links and a readable source viewer alongside the score
Bottom line
If you need a sitewide crawl, use Screaming Frog (or a similar crawler). If you need a free, fast look at one page’s source and SEO basics, use Sourcer. Many practitioners use both: crawler for coverage, Sourcer for a quick human-readable check.