What’s the best truly free backlink tool right now?

I’m trying to grow organic traffic for a small site on a tight budget and I’m overwhelmed by all the backlink checkers that either have strict limits or lock everything behind paywalls. I need a free tool that can reliably show my backlinks, help me find broken links, and maybe even spot competitor links so I can plan outreach. What tools are you actually using that are free and still worth the time?

Short answer for a tight budget: combo of Ahrefs Free, Google tools, and a couple of smaller free checkers. No single “best” fully free one covers everything anymore.

Most useful stack right now:

  1. Ahrefs Free Backlink Checker
  • URL: Free Backlink Checker by Ahrefs: Check Backlinks to Any Site
  • Free tier shows:
    • Top 100 backlinks for any URL
    • Referring domains
    • Anchor text
  • Limits:
    • No full export
    • No historical data
  • Use it to:
    • Find strongest links to your site
    • Reverse engineer your top 3 competitors
    • See what pages people link to most
  1. Google Search Console (GSC)
  • URL: search.google.com/search-console
  • Needs your site verified
  • Go to: Links → External links
  • You get:
    • Domains linking to you
    • Top linked pages
    • Top linking text
  • Pros:
    • 100 percent accurate for your own site
    • No limits or paywalls
  • Cons:
    • No data on competitor sites
  • Use it to:
    • See which pages already attract links
    • Find pattern in anchors and pages
    • Tidy up spammy junk if any
  1. Ubersuggest Free
  • URL: ubersuggest.com
  • Free account gives:
    • Limited backlink overview per day
  • It samples data from multiple sources
  • Use alongside Ahrefs to cross check links
  1. SE Ranking Free Trial / Mangools Trial
  • Not permanent, but good for a one time sweep
  • Use trial period to:
    • Export as much backlink data as possible
    • Store it in a Google Sheet
  • Then work off that data for a few months
  1. Alternative free checks worth bookmarking
  • Moz Free Link Explorer (limited, but ok for quick checks)
  • SEO SpyGlass (desktop, has a free version with caps)

Practical workflow for small site:

Step 1: Get your own baseline

  • Pull all links from GSC
  • Check top 100 links with Ahrefs Free
  • Note:
    • What type of sites link to you
    • Which pages attract the most links
    • Which anchors show up most

Step 2: Analyze 3 competitors

  • Use Ahrefs Free on:
    • Their root domain
    • Their top 3 ranking URLs in your niche
  • Look at:
    • Repeated sites linking to them
    • Simple links you can copy
      • Business directories
      • Niche roundups
      • Resource pages
      • Guest posts

Step 3: Build a simple system
Make 3 lists in a spreadsheet:

  • “Low effort”
    • Free business listings
    • Industry directories
    • Profiles and communities
  • “Outreach targets”
    • Blogs that link to 2 or more competitors
    • Resource pages linking to content similar to yours
  • “Content angles”
    • Topics that attract links for competitors
    • Formats that get links
      • Statistics pages
      • How to guides
      • Tools and calculators

Step 4: Focus on “linkable” pages
From your data, choose:

  • 1 or 2 pages to improve with:
    • Better structure
    • Clear headings
    • Original data or strong examples
  • Use those as main link targets in outreach

If you want only one tool and nothing else, use:

  • GSC for your site
  • Ahrefs Free Backlink Checker for everyone else

Everything “unlimited and free with full features” either:

  • Went paid,
  • Has tiny data,
  • Or scrapes junk.

So use a mix. The combo gives decent coverage without paying, as long as you accept some limits and do more manual work.

If you’re hoping for “one magical free backlink tool that does it all,” that ship has sailed. The data is expensive, so the good stuff moved behind paywalls. Anyone saying otherwise is usually selling something.

I mostly agree with @himmelsjager on stacking tools, but I’d tweak the priority and the expectations a bit.

1. The closest thing to “best” single free option right now

If I had to pick one thing to lean on as my main free source, it’d actually be:

Google Search Console + exports + your own system

Reason:
Every third-party backlink index misses stuff, sometimes a lot. GSC only shows your own site, sure, but it’s the cleanest and most “real” source of what Google actually sees.

What I’d do:

  • Verify your site in GSC
  • Go to Links → External links → Export
  • Dump that into a spreadsheet
  • Clean/filter:
    • Remove obvious junk (scrapers, auto-translate clones, etc.)
    • Tag links by type: blog, directory, forum, media, etc.

You won’t get competitor data here, but for a small site on a tight budget, squeezing everything out of what you already have is more valuable than half-baked competitor snooping you can’t act on anyway.

2. For competitor spying, I’d actually rotate tools, not rely on just Ahrefs Free

Ahrefs Free is good, yeah, but if you’re only using that, you’re seeing a very thin slice of their index. And everyone else is hammering the same 100 backlinks.

Instead of:

“Ahrefs Free as the main competitor tool”

I’d do this:

  • Week 1: Use Ahrefs Free Backlink Checker to get top 100 for a couple competitors
  • Week 2: Hit the same URLs with Moz Free Link Explorer
  • Week 3: Run them through SEO SpyGlass Free or Ubersuggest Free

You’ll notice every tool “knows” about some links the others don’t. Combine them in a sheet, remove duplicates, and you get a half-decent “poor man’s backlink index” over time.

It’s slower and more manual than the neat stack described by @himmelsjager, but for a tiny site, that extra gruntwork beats staring at the same repeated 100 links everyone else sees.

3. One underrated free angle: not backlink checkers but backlink sources

If your budget is basically zero, I’d spend more time on places that give you legit links instead of obsessing over measuring every last one. Tools are nice, links are nicer.

Stuff that still works and is free:

  • Niche directories & associations
    • Local chambers, industry bodies, tool directories
  • Q&A and community sites
    • Not spammy “drop link and run” but solid answers with a contextual link
  • Open-source & resource credits
    • If you use a tool or data set, create a guide showing how you used it
    • Reach out to them and ask to be listed in their “case studies / resources”

These don’t require fancy backlink checkers, just basic research and a spreadsheet.

4. What I would not stress about right now

  • Getting “perfect” backlink data for every competitor
  • Mini differences between Ahrefs free vs Moz free vs Ubersuggest free
  • Chasing tools that promise “unlimited free backlinks data”
    • Usually tiny indexes, outdated data, or… questionable scraping

You’re better off with:

  • GSC for your own links
  • 2 or 3 small free tools rotated for competitor sampling
  • A consistent habit: every week, find 5 new potential link sources, do 3 solid outreach attempts, improve 1 “linkable” page on your site

5. If you’re really forced to use exactly one thing

Since you specifically asked for 1 tool that can “reliably track and analyze backlinks” on a tight budget:

  • For your site only:
    Google Search Console wins, no contest.
  • For your site + competitors and you accept limits:
    → I’d grudgingly say Ahrefs Free, but only if you’re okay with surface-level data; it is not a full tracking solution.

In other words, the “best truly free tool” is boring:
GSC + your spreadsheets + your consistency.

Everyone wants the magic SaaS dashboard. The scrappy setup usually wins for tiny sites.