Competitor Keyword Research Without Expensive Software: 7 Free Ways

You type "keyword research tool free" into Google and you get the same five names back. Semrush. Ahrefs. Moz. Ubersuggest. SpyFu. Every one of them wants a credit card before you see anything useful, and the "free" version caps you at a handful of searches per day.

Here's what nobody tells you: you can build a genuinely useful competitor keyword map without paying a cent. I've done it for client sites with monthly traffic in the low six figures, using nothing but Google's own surfaces and a spreadsheet.

That's the approach I'll walk you through — competitor keyword research without expensive software, done manually, with tools you already have open in another tab.

Why free tools keep failing you

I'll be blunt: the freemium model isn't designed to let you finish a project for free. It's designed to show you exactly enough to make the paid tier feel necessary.

Ubersuggest gives you three searches per day. WordStream's free keyword tool gives you a fixed set of suggestions with no export option. Google Keyword Planner — technically free — now gates detailed volume data behind an active ad campaign for many accounts, which is the quietest bait-and-switch in SEO.

So the honest answer to "is there a free tool for competitor keyword research" is: yes, but not one that does the whole job. You need a stack, not a tool.

The real constraint isn't price

What most people miss is that the bottleneck was never cost. It's data freshness. Paid tools refresh their databases on a schedule that can lag weeks behind what's actually ranking. Google's own surfaces — autocomplete, related searches, the live results page — update in near real time.

That's the trade you're making. You give up bulk export and historical trends. You gain currency.

The manual method, step by step

This is the workflow I actually use. It works for local businesses, SaaS, and content sites — the sequence doesn't change, only the seed terms do.

Step 1: harvest from autocomplete

Open Google in an incognito window. Type your competitor's main product or service term, then add each letter of the alphabet after it, one at a time. Google fires back suggestions for each. Copy everything into a column.

Do the same with:

• "competitor name" + vs — surfaces comparison intent
• "competitor name" + pricing / cost / alternative
• question starters: how, what, why, which, can, does, is

For one client in the B2B logistics space, this single exercise generated around 140 raw terms in under 40 minutes. Roughly a third were junk. That's fine — you're fishing, not sorting.

Step 2: mine the bottom of the results page

Run a search for your main term. Scroll to the very bottom. There's a block of eight related queries. Run a search on each of those, and each one returns its own block of eight. Two levels deep and you've got 64 terms from one seed.

This is the single highest-yield free technique, and it's the one I see skipped most often.

Step 3: pull competitor sitemaps

Most sites publish an XML sitemap at /sitemap.xml. Open it. You'll see their blog post URLs, product pages, and category structures.

Strip the domain from each URL and you have the slug. That slug is usually a keyword. "best-crm-for-agencies" tells you exactly what term they're targeting.

Here's the thing: I built a small script for this that runs in about 90 seconds across 20 competitors. You don't need the script. Manual copy-paste for 20 sitemaps takes maybe an hour and gives you the same list.

Step 4: check what they're paying for

Google's Ads Transparency Center is free and requires no login. Search a competitor's domain. You see every ad they're currently running, including the headline and description text.

If a company is paying for a keyword month after month, that term converts. You don't need a PPC tool to figure that out — you just need to look.

Is there a free tool to research competitor keywords?

Yes, but "free" comes in three flavors and they behave very differently.

Category	Example	What you get	Real limit
Freemium with daily cap	Ubersuggest	Volume, difficulty, some competitor data	3 searches/day
Free but gated	Google Keyword Planner	Volume ranges, seasonality	Detailed data often needs an active campaign
Free with no login	WordStream's tool, AnswerThePublic	Suggestion lists, no metrics	No volume or difficulty score
No tool at all	Google autocomplete + sitemaps	Raw terms, competitor targeting	You estimate volume yourself

Notice the last row. It's the one most people ignore, and it's the only one with no ceiling.

What is the best free tool for keyword research?

Depends what you mean by "best." If you want a single interface, Google Keyword Planner still wins on volume data quality — when you can access it. If you want speed and don't care about precise numbers, autocomplete beats everything.

My actual ranking

1. Google autocomplete + related searches — unbeatable for term discovery, zero cost, live data
2. Google Keyword Planner — best volume ranges if your account qualifies
3. Ubersuggest free tier — fine for checking 2-3 specific terms, useless for bulk
4. AnswerThePublic — question-based terms only, and the free version is now heavily limited
5. WordStream's free tool — decent for a rough starter list, no metrics

One caveat I'll die on: don't trust any single tool's volume numbers. I've compared the same keyword across four sources and seen a spread of 4x between the lowest and highest estimate. Keyword Planner is the closest to reality in my experience, but even that is a range, not a fact.

Can I use Ubersuggest for free?

Yes, with real constraints. The free tier allows 3 searches per 24 hours without an account and gives you keyword volume, difficulty, and a limited competitor view. You'll hit a paywall for anything resembling bulk analysis, historical trends, or full domain reports.

My honest take: Ubersuggest free is a spot-check tool, not a research tool. Use it to validate 2-3 terms you've already found manually. Don't build a strategy on it.

The workaround that works

Rotate between Ubersuggest, WordStream, and Keyword Planner for the same term. You get three independent estimates and can spot the outlier. It's slower than a paid plan. It's also more honest about how uncertain this data actually is.

What is a free tool for researching keyword difficulty?

This is where free options thin out badly. Difficulty scoring depends on backlink data, and backlink indexes are expensive to maintain — which is why almost nobody gives them away.

Free options that exist:

• Ubersuggest — shows a 0-100 difficulty score on its 3 free daily searches
• Moz's free domain analysis — limited monthly queries, gives Domain Authority as a proxy
• Manual SERP inspection — the method I actually trust most

That last one deserves explanation. Search your target term. Look at who ranks in the top five. If they're all major brands with deep sites, the term is hard regardless of what a score says. If you see forums, thin blog posts, or small business sites, it's winnable.

I've ranked pages on terms that Ubersuggest scored 68/100 difficulty, simply because the actual results were weak. The score and the reality disagreed, and the reality won.

Stacking it all together

Here's the workflow I've landed on after years of fiddling. It takes about half a day per competitor set and produces a keyword map I'd put against any paid tool's output.

1. Harvest 100-200 raw terms from autocomplete and related searches
2. Cross-reference against competitor sitemaps to see which terms they've actually built pages for
3. Filter to terms where your site has a genuine angle — not just volume
4. Check 5-10 finalists in Ubersuggest or Keyword Planner for volume confirmation
5. Manually inspect the top results for each finalist to judge real difficulty
6. Log everything in a spreadsheet with a column for "who ranks and why"

The "why" column is the one that matters. Volume tells you the size of the prize. Difficulty tells you the cost. Neither tells you whether you can actually write something better than what's ranking.

That last judgment is still yours. No tool, free or paid, has figured out how to automate it.