How it works
- Enter a competitor's domain (for example
competitor.com). - The tool fetches the homepage and detects technologies, server software and on-page signals.
- It queries WHOIS for the domain age and checks the sitemap to estimate the number of indexed pages and surface top pages.
- You get a structured overview: tech stack, domain profile, social presence and key pages — ready to compare against your own.
What it shows
- Technology stack — CMS, frameworks, analytics and server software in use.
- Domain profile — title, HTTPS status, domain age and approximate indexed page count.
- Top pages — the most important URLs pulled from the site's sitemap, with their on-page titles.
- Content structure — how the site is organized into sections.
- Social profiles — the social accounts linked from the homepage.
- On-page signals — response time, server and security headers.
Common use cases
- Competitor research — see how a rival is built and what content they prioritize.
- Prospecting and outreach — quickly qualify a domain before reaching out.
- Benchmarking — compare a competitor's tech and structure against your own.
- Due diligence — get an objective snapshot of an unfamiliar site.
Example
Explore a competitor and you might learn they run WordPress behind Cloudflare, the domain is 8 years old with roughly 240 indexed pages, their biggest content section is /blog/, and they link to four social profiles — a clear picture of an established, content-driven competitor.
Frequently asked questions
Can it show a competitor's backlinks or traffic?
Exact backlink counts and traffic require a proprietary crawl index that no free public source provides, so this tool focuses on the rich data that can be obtained live. For backlink prospecting, use the Link Intersect / Backlink Gap and Backlink Checker / Verifier.
How do I see a competitor's top pages and topics?
The explorer surfaces top pages from the sitemap. For a deeper breakdown of a domain's sections and topics, use the Organic Research / Top Pages, and find content gaps with the Content / Keyword Gap.
Is this a free Open Site Explorer alternative?
Yes. Moz retired the original Open Site Explorer in 2019, yet many people still search for a free site explorer to profile a domain. SeoMods gives you that — strongest pages, internal link structure, tech stack, domain age and SSL — with no signup. For link-specific research, pair it with the Backlink Checker / Verifier and Link Intersect / Backlink Gap.
Is it free?
Yes — free, no signup, real live data. Read our competitor analysis guide for a full workflow.