You don't need a $1,500/month tool to know which companies are using your competitors — most of the signal is already public, free, and refreshed daily. The problem isn't access; it's knowing where to look and how to synthesize what you find. Free competitive intelligence methods are slower than paid tools, but for teams just starting out or working with tight budgets, they're more than enough to build a qualified target list and understand your competitive landscape.
- Job postings are the highest-signal free source for competitor intelligence — companies that mention a competitor's product in a JD are confirmed active users.
- G2, Capterra, and Trustpilot reviews reveal which companies use which tools, along with switching intent and pain points, at no cost.
- LinkedIn boolean search, Google dorks, and tech stack detectors like BuiltWith's free tier cover most of the competitor mapping an SDR needs.
- Manual CI is slower but teaches you pattern recognition that paid tools obscure — understanding why companies switch is as valuable as knowing which ones will.
- Once your volume needs outgrow manual research, tools like Stealery automate the competitor-user identification step so you can focus on outreach.
What is competitive intelligence in B2B sales, and why does it matter?
Competitive intelligence (CI) in B2B sales is the practice of systematically identifying which companies in your market are using a rival product, how satisfied they are, and what signals suggest they might be open to switching. It's distinct from market research — CI is operationalised, meaning the output is a list of companies you can actually contact this week.
The reason CI matters so much for SDRs specifically is the qualification shortcut it provides. A company already using a competitor has already validated three things: they have budget for this category, they've solved for internal buy-in, and they understand the problem your product solves. According to McKinsey's B2B Elements of Value research, reducing customer effort in the buying process is one of the top drivers of purchase decisions — and a competitor-aware pitch does exactly that by skipping the education phase entirely.
The challenge is that most CI tooling is priced for enterprise teams. Platforms like Bombora, G2 Buyer Intent, or Demandbase start at price points that make no sense for a 15-person startup's outbound motion. But the underlying data those tools are aggregating? A meaningful portion of it is publicly available if you know where to look.
How do you use job postings to find companies using your competitors?
Job postings are the most reliable free source for competitor intelligence. When a company lists a tool in a job description — "experience with Salesforce required" or "familiarity with HubSpot a plus" — they are publicly confirming active usage. This is real-time, constantly refreshed, and covers companies of every size.
The method is straightforward. Go to LinkedIn Jobs, Indeed, or Greenhouse's job board aggregator and search for your competitor's name in quotes. Filter by company size, location, and seniority if you want to narrow the list. Every result is a confirmed user of that tool. Extract the company name, find the right contact at that company using LinkedIn, and you have a qualified prospect with a specific conversation hook.
For more systematic coverage, use Google with operators like site:linkedin.com/jobs "[competitor name]" or site:greenhouse.io "[competitor name]". This surfaces postings that LinkedIn's own search might deprioritise. You can also set up Google Alerts for your competitor's name combined with terms like "proficient in" or "experience with" to get new postings delivered to your inbox daily.
The limitation here is recency — job postings are a snapshot of hiring intent, not a complete picture of the installed base. A company that implemented your competitor two years ago may not be hiring right now. Pair this with review site data (covered below) for broader coverage.
How do you use G2 and Capterra to identify competitor users for free?
Review platforms like G2, Capterra, and Trustpilot are an underused source of CI because most SDRs treat them as social proof tools rather than prospecting databases. But the reviewer data is publicly visible — company name, company size, industry, and often the specific use case — and it costs nothing to access.
On G2, navigate to your competitor's product page and sort reviews by most recent. Each review shows the reviewer's company (or a close approximation), their role, and their rating. One-star and two-star reviews are particularly valuable: they show confirmed users who are actively dissatisfied. These companies are in-market for an alternative whether they know it yet or not. The review text itself often surfaces the exact pain point — "we switched because X" or "the biggest problem we have with [competitor] is Y" — giving you a ready-made conversation opener.
Capterra and GetApp show similar data. TrustRadius goes deeper on enterprise accounts and often includes more detailed pros/cons that reveal switching triggers. You won't get email addresses from any of these, but company name plus LinkedIn is enough to find the right contact in under two minutes.
"The G2 review section for our main competitor became our secret weapon. We'd filter for one and two-star reviews, find the company on LinkedIn, and open with: 'I saw you've had some frustrations with [competitor] — we built [our product] specifically to solve that.' Reply rates on those emails were almost triple our normal cold outreach."
— Head of Sales, 38-person B2B SaaS company
What free tools can reveal a company's tech stack?
Several free tools scan websites for technology signatures and return a list of tools a company is running. These are most useful when your competitor is a software product that runs in-browser or leaves a detectable footprint.
BuiltWith (free tier)
BuiltWith's free lookup at builtwith.com shows the current tech stack for any domain — CMS, analytics, marketing automation, CRMs, and more. You can look up one company at a time for free. If your competitor is a marketing tool, analytics product, or anything web-facing, BuiltWith will often detect it. The paid version adds bulk export and historical data, but for manual CI the free lookup is genuinely useful.
Wappalyzer (free browser extension)
Wappalyzer is a browser extension that shows a company's tech stack while you're on their site. It's faster than BuiltWith for one-off lookups and covers most major SaaS categories. The free version shows current stack; their paid API adds bulk analysis. For an SDR doing account research before a call, Wappalyzer installed in Chrome takes three seconds to confirm whether a prospect is a competitor user.
Reverse-engineering with Google
Some integrations are discoverable via Google. If your competitor has a help centre with customer case studies or integration documentation, searching site:[competitor].com customer OR "case study" OR "how [company] uses" will surface named accounts they've published. These are warm leads — the competitor thought they were worth publicising, which usually means they're happy enough to be a reference. Happy reference accounts are also the most likely to switch when a better product comes along.
How do you use LinkedIn for free competitor research without a paid account?
LinkedIn's free tier is more capable for CI than most people realise. The key is boolean search and knowing what to look for in profiles.
In LinkedIn's people search, filter by current company and search for job titles that would use your competitor's tool. Then look at the "Skills" and "Experience" sections of those profiles. If an SDR at a target company has listed your competitor's product in their skills or tools section, that's a confirmed seat. Do this across 10–20 people at a company and you get a reasonable picture of their stack.
The second method is LinkedIn company pages. Navigate to a target company's page, click "People," and filter by role. Look at profile headlines — many people include the tools they use in their headline or bio. "SDR @ Acme | Outreach.io | HubSpot" is a common format, and it's a free data point.
A third method: search for posts mentioning your competitor. Go to LinkedIn's content search, type your competitor's name, filter by posts, and sort by recent. Users often post about tools they use — complaints, feature requests, praise — and the poster's company is visible. This is lower volume but occasionally surfaces high-intent accounts that are publicly venting about a competitor's product.
Salesloft's State of Sales Development research found that personalised outreach referencing a specific context — a tool the prospect uses, a recent company event, or a known pain — generates significantly higher response rates than generic sequences. Free CI methods give you exactly that kind of context, even if the data collection is slower.
How do you track competitors over time without paying for monitoring tools?
Point-in-time research is useful, but competitive intelligence compounds when it's ongoing. Here are the free methods that work for continuous tracking rather than one-off research.
Google Alerts
Set up Google Alerts for your competitor's name, their key product features, and terms like "[competitor] alternative" or "[competitor] vs." The last two are particularly high-value: someone searching for alternatives is in active evaluation mode. If they're publishing content about it, their company is likely talking to vendors — including potentially you, if your outbound is running.
Reddit and community monitoring
Subreddits like r/sales, r/salesforce, r/hubspot, and category-specific communities are where practitioners complain about tools candidly. Search your competitor's name within relevant subreddits and set up keyword notifications using tools like F5Bot (free). Posts asking "what's a good alternative to [competitor]" are the highest-intent signal you can find — the poster is actively looking, and their company name is often visible in their post history.
Changelog and product update monitoring
Following your competitor's product changelog reveals where they're investing and where they're weak. If they've shipped three updates to a core feature, that feature is probably where they're getting the most customer complaints. That's your attack surface in sales conversations.
When does manual competitive intelligence stop being enough?
Manual CI works until volume becomes the constraint. If you're running a focused outbound motion targeting 50–100 accounts per month, the methods above are sufficient. You spend maybe two to three hours a week on research and the rest on outreach and follow-up.
The inflection point comes when you need to identify hundreds of competitor users per week, apply filters like company size, geography, or growth signals, and feed results directly into your CRM or sequencer. At that point, manual research becomes the bottleneck rather than the outreach itself.
This is where a tool like Stealery comes in — you type in a competitor name and get a filtered list of every company using it, segmented by size, location, and hiring signals, in roughly the time it would take to do a single manual LinkedIn search. For teams whose outbound volume has grown beyond what manual CI can support, it's the natural next step. But if you're just starting out, the free methods in this guide will get you further than you'd expect.
The honest answer is that the choice between manual and tool-assisted CI isn't really about money — it's about where your time is worth most. An SDR spending four hours a week on manual research is an SDR spending four fewer hours on conversations. When that trade-off flips, it's time to automate the research layer.
How do you build a repeatable CI process without any paid tools?
Sporadic research produces sporadic results. The teams that get the most out of free CI methods are the ones who systematise it — same sources, same cadence, output piped into a shared doc or CRM tag.
A working free CI stack looks like this: Job postings checked weekly via saved LinkedIn searches and Google Alerts. G2 and Capterra reviews checked bi-weekly, with one and two-star reviews logged in a shared spreadsheet with company name, reviewer role, and primary complaint. BuiltWith or Wappalyzer used at the account-research stage for every prospect before a call or email. Reddit and community monitoring set up once with keyword alerts, then passive.
The output of this system is a rolling list of qualified accounts with context: what tool they're using, how happy they are with it, and what the pain point is. That's everything an SDR needs to write a personalised first email that doesn't read like a template. For teams building out their competitor intelligence practice from scratch, starting with this manual foundation before layering in paid tools is the approach that produces the best pattern recognition over time — you understand the signal before you automate it.
Explore more approaches on the Stealery blog or go deeper on outreach tactics on the Cold Outreach category page.
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Juliana — Sales & GTM expert