Companies using Apollo.io: 13,395 found
We found Apollo.io running on 13,395 company websites. The biggest group is IT Services & Consulting (16%), 48% are headquartered in United States, and 1.8% have more than 1,000 employees. Teams that use Apollo.io are 5.9× more likely than the average company to also use Warmly.
- 13,395
- companies using Apollo.io
- 1.8%
- have 1,000+ employees
- 111
- countries
- 16%
- IT Services & Consulting
Who uses Apollo.io
Every company we found, by sector and business model from our company classifier. A company can sit in more than one sector, so shares add up to more than 100%.
What else Apollo.io users run
How much more likely a Apollo.io user is to also run each tool, compared with the average of the 436,194 companies across our technology pages. 5.9× means Warmly shows up 5.9 times as often among Apollo.io users as among everyone else.
Companies using Apollo.io
A sample of 25 of the 13,395 companies, with the evidence behind each one. Book a call for the other 13,370.
| Company | Industry | Size | HQ | Seen on | Evidence |
|---|---|---|---|---|---|
Business Insider Advertising advertising.businessinsider.com | Performance / Growth / Adtech | 51–200 | United States | Website | Website scan |
HackerRank hackerrank.com | HR, Staffing & Recruiting | 201–500 | United States | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
TransPerfect transperfect.com | Writing, Content & Localization | 5,001–10,000 | United States | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
Thomson Reuters tr.com | Data & Analytics | 10,001+ | Canada | Website | Adobe Launch: assets.apollo.io/micro/website-tracker/track |
TASC Outsourcing tascoutsourcing.com | HR, Staffing & Recruiting | 10,001+ | United Arab Emirates | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
Braintrust usebraintrust.com | HR, Staffing & Recruiting | 11–50 | United States | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
Compunnel Inc. compunnel.com | IT Services & Consulting | 5,001–10,000 | United States | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
Recro recro.io | Software Development (custom / web / mobile) | 501–1,000 | India | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
Hack The Box hackthebox.com | Cybersecurity | 201–500 | United Kingdom | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
Indian Startup News indianstartupnews.com | Publishing & News | 2–10 | India | Website | Website scan |
Emapta Global emapta.com | Business Support & BPO | 10,001+ | Philippines | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
Lockton lockton.com | Insurance & Insurtech | 10,001+ | United States | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
Tide tide.co | Banking | 1,001–5,000 | United Kingdom | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
UBL - United Bank Limited ubldigital.com | Banking | 10,001+ | Pakistan | Website | Website scan |
People Prime Worldwide people-prime.com | IT Services & Consulting | 501–1,000 | India | Website | Loads assets.apollo.io |
European Tech Recruit eu-recruit.com | HR, Staffing & Recruiting | 51–200 | United Kingdom | Website | Loads assets.apollo.io |
Arabian Construction Co. accgroup.com | Construction & Contracting | 10,001+ | United Arab Emirates | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
Mitchell Martin Inc. mitchellmartin.com | HR, Staffing & Recruiting | 501–1,000 | United States | Website | Loads assets.apollo.io |
Andela andela.com | HR, Staffing & Recruiting | 201–500 | United States | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
hotsourced hotsourced.io | HR, Staffing & Recruiting | 11–50 | United Kingdom | Website | Loads assets.apollo.io |
Ipsos ipsos.com | Market Research & Insights | 10,001+ | France | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
National Bank of Kuwait empli.fi | Banking | 1,001–5,000 | Kuwait | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
We Are Social wearesocial.com | Social & Influencer / Content | 1,001–5,000 | United Kingdom | Website | Loads assets.apollo.io |
Coderhouse coderhouse.com | Education | 51–200 | Argentina | Website | Loads assets.apollo.io |
Hudson Talent Solutions hudsontalent.com | HR, Staffing & Recruiting | 1,001–5,000 | United States | Website | Tag manager: assets.apollo.io/micro/website-tracker/tracker.i |
Book a 15-minute call. We'll walk you through all 13,395 companies and how we can help you reach the right people at each.
Book a call →who_uses_tech on gtm.dev →How we saw Apollo.io
Each company is counted once, under the strongest evidence we found for it.
Apollo.io usage: common questions
How many companies use Apollo.io?
We found Apollo.io running on 13,395 company websites, as of 5 November 2026. This counts companies we can tie to a LinkedIn company page, so it is a floor, not a market total.
Which well-known companies use Apollo.io?
Well-known companies using it include Business Insider Advertising, HackerRank, TransPerfect, Thomson Reuters and TASC Outsourcing. The table above lists more, with the evidence for each.
What industries use Apollo.io the most?
IT Services & Consulting (1,980 companies), SaaS / Cloud (1,746) and AI / ML (1,692) lead, out of 12,048 companies we could classify.
Which countries have the most Apollo.io users?
United States (48%), United Kingdom (11%) and India (9.1%). We see Apollo.io at companies headquartered in 111 countries.
What tools do Apollo.io users also use?
Compared with the average company in our data, Apollo.io users are most over-represented on Warmly (5.9×), Clearbit (4.1×), Clay (4.1×). The multiplier is how much more likely they are than average to run that tool too.
How do you know a company uses Apollo.io?
We load company websites and look for Apollo.io's fingerprints: the scripts and network requests it makes, its cookies and response headers, DNS records, and tags configured inside Google Tag Manager containers. A company is only counted when we can tie the domain or app to its LinkedIn company page, and shared domains (link shorteners, site builders) are excluded, so a domain scan of bit.ly never counts as evidence about a brand that links to it.
Can I export the full list of Apollo.io users?
Yes. Create a free RocketSDR account to filter all 13,395 companies by industry, size and country, find the right contacts, and start outreach. Developers can query the same data through the gtm.dev who_uses_tech API.
Sell to the 13,395 companies running Apollo.io
Every company on this page is a signal: a budget line, a team that buys tools like yours, and — if you compete with Apollo.io — a displacement target. RocketSDR finds the right people at each one and writes the outreach.