Tools · apm tracing errors

Companies using AppSignal_

As of 4 November 2026, 142 companies show AppSignal: 132 carry it on their website or in their DNS records, 10 name it in their own job postings, and 0 do both.

As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

Largest market
United States · 52 companies
Companies with 51+ staff
7 · 5% of the footprint
Top industry
Technology & software · 67%
Team that names it most
Software engineering · 9 postings
Hiring on it, last 30 days
4 companies
Most often alongside
PostgreSQL · 8 companies
142companies show AppSignal, all sources
132on their website or in DNS records
10name it in their own job postings
8postings naming AppSignal, last 90 days
02 — Two ways we see a tool

Where AppSignal shows up

Each population is counted on its own. We never add them up without saying so, because they answer different questions.

Website and DNS footprint132

Companies whose own pages load AppSignal's scripts or embeds, or whose domain's mail and hosting records (SPF, DKIM, MX, CNAME) point at AppSignal. From our crawl of 41.5M company websites and the DNS sweep behind it. Reach: the tool is in the building.

Job postings10

Companies whose own postings say the team works in AppSignal. Read hourly from ~70 applicant tracking systems, with the function, a quote and a date. Intent: the team that runs it is hiring.

Both0

Companies in the footprint whose postings also name AppSignal. The rest of the posting population (10) runs AppSignal without a public trace on the site or in DNS, which is where job data earns its place.

03 — Who uses it

Companies on AppSignal

Every company whose own postings name the tool, any size; job boards and portals left out.

Seen through the website or DNS only

Companies with 1,000+ employees whose website or DNS carries AppSignal but whose postings never name it: the part of the market job data alone misses.

142 companies show AppSignal; 1 of them have over 1,000 employees.

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04 — Footprint breakdown

By country, company size and industry

The 132 companies with AppSignal on their website or in DNS. Click a country for its own page where we have one.

By country
companiesshare
United States
5239%
United Kingdom
1612%
Germany
108%
Netherlands
108%
France
86%
Brazil
65%
Canada
43%
Australia
32%
Austria
22%
Denmark
22%
Sweden
22%
TH
22%
By company size
companiesshare
Self-employed
5239%
2-10 employees
2116%
11-50 employees
4635%
51-200 employees
65%
1001-5000 employees
11%
By industry
companiesshare
Technology & software
8867%
Business & finance services
1914%
Media & content
75%
Public, community & associations
32%
Consumer services & leisure
32%
Commerce & trade
22%
Health care
11%
Manufacturing & industry
11%
Property & construction
11%
Transport, logistics & rental
11%
05 — What their DNS and pages also say

The mail, hosting and web stack of AppSignal companies

Other tools found on the same companies' websites or in their DNS records. Mail providers and senders come from SPF, DKIM and MX; the rest from page code.

06 — Job-posting evidence

Who runs AppSignal inside the company

The 10 companies whose postings name AppSignal: by country, size and the function of the role. The second number in the function table is companies.

Postings by function
postings · companies
Software engineering
9 · 8
Product, program & project management
2 · 2
Data & AI
1 · 1
Marketing & communications
1 · 1
Unclassified
1 · 1
Posting companies by country
companiesshare
Germany
220%
United States
220%
Switzerland
110%
Estonia
110%
France
110%
Malta
110%
Netherlands
110%
Poland
110%
Posting companies by size
companiesshare
2-10 employees
330%
11-50 employees
440%
51-200 employees
220%
501-1000 employees
110%
Hiring on it right now
postings
Postings, last 30 days
6
Postings, last 90 days
8
All open postings
16

4 companies opened a role that names AppSignal in the last 30 days. A hiring team that names its tools is the moment to write to the person who owns the stack.

07 — Named alongside

What AppSignal teams also ask for

Tools named in the same postings as AppSignal. Office software is left out.

08 — apm tracing errors

AppSignal against the rest of its category

Ranked by companies naming each tool in postings. Whole category →

Cite this

Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.

142 companies show AppSignal: 132 carry it on their website or in their DNS records, 10 name it in their own job postings, and 0 do both. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/appsignal)
How we know

Read from the source, not self-reported

Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →

  • Website codeScripts, tags and embeds found on the company's own pages in our crawl of 41.5M sites. A tool counts once per company.
  • DNS recordsSPF includes, DKIM selectors, MX and CNAME records of the company's domain that point at AppSignal or another vendor. Swept in cycles; dedicated mail-provider and hosting facets open once coverage passes 80% per country.
  • Job postingsRead hourly from the applicant tracking systems behind company career sites. A tool counts when the employer's own text names it as the team's system; candidate wish-lists and apply boilerplate are excluded. Confidence low, medium or high per company.
  • Sending infrastructureCold-e-mail sending domains are look-alike domains on a provider's infrastructure (DNS records, certificate logs) that redirect to the company. Absence is not evidence: only companies with a found sending domain are counted.
  • CompaniesCountry, size and industry come from the company profile we build from its website; headcount from LinkedIn where known, otherwise estimated. Job boards, portals and aggregators are kept out of lists.
FAQ

AppSignal data: questions

How many companies use AppSignal?

142 as of 4 November 2026: 132 carry AppSignal on their website or in their DNS records and 10 name it in their own job postings; 0 show up in both. We keep the two counts apart because they measure different things.

What does "website or DNS" mean?

Our crawler finds AppSignal's scripts, embeds and tags on the company's own pages, and our DNS sweep reads the domain's mail and hosting records (SPF includes, DKIM selectors, MX, CNAMEs) that point at AppSignal. Either one puts the company in the footprint. The sweep is still running, so this number grows week by week.

Why is the job-posting number so much smaller?

A posting only names a tool when the team that will use it is hiring and chooses to say so. That makes it a smaller but stronger signal: it tells you which team runs AppSignal, with a quote and a date. The footprint tells you reach.

How fresh is this?

Career sites are read hourly, websites are re-crawled on a rolling schedule and DNS is re-swept in cycles. The date at the top is when these counts were computed.

Can I get the list?

Yes. The first 20 are on this page; the full 142 with verified e-mails and a weekly feed of new AppSignal users is in the product. Counting is free.

Companies and people

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