What Is the Best Backlink Tool?

If you want one answer: Ahrefs has the best backlink index, and has for years: the biggest crawl, the freshest data, the fewest gaps. But "best index" and "best tool for you" are different questions, and paying $129 a month for the best index is a bad decision if what you actually needed was Google Search Console and twenty minutes. The right tool depends entirely on which job you're doing.

There are four distinct jobs people call "backlink tools," and they have different winners. We make Backlinkster, which is mentioned under the fourth job; it is not a backlink checker, and the first three picks have nothing to do with us.

Job 1: Seeing your own backlinks → Google Search Console (free)

If the question is "who links to me," start here and possibly stop here. Search Console shows you the links Google actually knows about, direct from the source, for free. No third-party crawler can beat that on accuracy for your own domain. They're all approximating what Google sees; Search Console is what Google sees.

Its limits are real and documented. Google's Links report help page says the report "isn't a comprehensive list of every link on your site" but "a sample", that each table is limited to 1,000 rows, and that it does not show whether a link is nofollow. The main export does go further, up to 100,000 rows per slice. It also won't show competitors, and the interface is joyless. But if you're a small site checking whether your links registered, paying for a tool to answer this is money on fire. How to find backlinks to your website walks through the workflow.

A free step up for your own site is Ahrefs Webmaster Tools: once you verify ownership you can see up to 1,000 backlinks at once, get 5,000 site audit crawl credits a month, and add an unlimited number of verified sites. It still won't show competitors' links; that's what the paid plans are for.

Job 2: Competitor link research → Ahrefs (or Semrush)

This is where paid tools earn their money, because there's no free substitute. You want to see every site linking to your three closest competitors, filter to the ones linking to two of them but not you, and work that list. That's a genuine strategy you can't run any other way.

Ahrefs: best-in-class link index, cleanest link-focused UX. The Lite plan is $129 a month and the Starter plan $29 (prices checked October 12, 2026). If backlinks are the main thing you're doing, this is the pick.
Semrush: link index is a step behind Ahrefs, but it's a far broader platform (ads, keywords, technical audits). If you need one tool for all of marketing rather than the best link tool specifically, this often wins on total value.
Majestic: the specialist. Trust Flow and Topical Trust Flow are genuinely useful for judging link relevance rather than raw strength, and it's cheaper. Narrow, but good at its niche. Trust Flow and Citation Flow explains how to read them.
Moz Link Explorer: the smallest index of the four. Its real significance is that Domain Authority became the industry's shared vocabulary, so people still check it.

Honest note: these tools disagree with each other constantly, because each one crawls a different slice of the web. Three tools reporting three different link counts for the same site isn't a bug. None of them is Google. Pick one, use its numbers as relative comparisons, and don't agonize over the absolute figure.

Job 3: Checking a site's authority before you deal with it → free checkers

Vetting a potential partner, guest post host, or directory? You need one number and a gut check, not a subscription. Free tier tools and standalone checkers handle this fine; we built a rundown at check domain rating for free.

What matters here isn't the tool, it's knowing what the number means. DA and DR are third-party estimates invented by tool vendors. Google doesn't use either one. They're useful shorthand for "is this site established," and useless as a target to optimize toward. What is domain authority explains what they do and don't tell you.

And the number should never be the whole decision. A DR 30 site squarely in your niche with a real audience beats a DR 60 general site whose traffic has nothing to do with you. How to vet a link swap partner covers the checks that matter more than the score.

Job 4: Actually getting links → none of the above

Here's the thing worth saying plainly: every tool above is an analysis tool. They tell you what exists. Not one of them gets you a link. You still have to find a relevant site, reach a human, make a case, and get a yes. That's the part that takes the time and the part where projects stall.

This is the most common expensive mistake in link building: buying a $129 a month subscription, generating a beautiful 500-row prospect list, sending eleven emails, hearing nothing, and quietly letting the renewal run for a year. The bottleneck was never the data.

We make Backlinkster, which attacks the other half: the site owners are already there and already want to trade, so you skip the cold outreach. You're matched with relevant sites, swap 1-for-1 in-content links, and each swap is verified by API so you don't need a crawler to confirm it stuck. Five free swaps a month, no card. The alternatives for this job are outreach tools such as BuzzStream and Pitchbox, which organise the emailing but still depend on strangers replying, and agencies, which do the emailing for you at $250 to $400 per link.

When Backlinkster is not the right fit

It is not the right fit if you need links from major publications that will never trade, if your site cannot link out to other businesses, or if what you want is a report rather than a link. For the first two, outreach tools or an agency are the honest answer; for the third, the tools in jobs one to three are.

So which should you pick?

Small site, own links only → Search Console, plus Ahrefs Webmaster Tools. Free, accurate, sufficient.
Serious about competitive link research → Ahrefs.
Need one tool for all marketing → Semrush.
Relevance-focused, budget-conscious → Majestic.
Just vetting a site quickly → a free DA/DR checker.
Want links, not reports → the tool isn't the answer. The outreach, or the exchange, is.

The best backlink tool is the cheapest one that answers your actual question. For most people starting out, that's Search Console plus a free checker, with a paid subscription earning its place only once competitor research is genuinely the constraint.

Frequently asked questions

What is the best backlink tool? Ahrefs has the best backlink index, at $129 a month for the Lite plan. But the best tool depends on the job: Google Search Console is best for seeing your own links (free), Ahrefs or Semrush for competitor research, a free DA/DR checker for vetting a site, and no checker at all for actually getting links.

What is the best free backlink checker? For your own site, Google Search Console and Ahrefs Webmaster Tools. Search Console shows a sample of the links Google knows about, up to 1,000 rows per table; Ahrefs Webmaster Tools shows up to 1,000 backlinks at once for any site you verify. Neither shows competitors' links.

Why do Ahrefs, Semrush and Moz show different backlink counts? Because each crawls a different slice of the web and none of them is Google. Use one tool's numbers as relative comparisons between sites rather than treating any count as the true figure.

Does Google Search Console show all my backlinks? No. Google's own help page says the Links report is a sample, not a comprehensive list, and that it does not show whether a link is nofollow. It is still the most accurate free view of which links Google has seen.

Can a backlink tool get me backlinks? No. Every backlink tool is an analysis tool. Getting a link still means finding a relevant site and getting a yes, through outreach, an agency, or a direct exchange with another site owner.