Attio vs Warmly: who uses which
Customers, public proof and the companies that use both.
On usedby, 20 companies use Attio and 30 use Warmly. No company is listed with both yet.Latest check Oct 8, 2026: 48 of 50 public lines checked. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side.
Who uses Attio, Warmly, or both
Every company with a public proof for at least one of the two tools.
20
use only Attio
0
companies use both
30
use only Warmly
20 companies use only Attio, 30 use only Warmly and 0 use both, out of the 50 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 2, 2026.
Where it lands
Newest customers
No new customer since tracking started on October 8, 2026.
Who uses both
Companies with a confirmed or observed line on both tools.
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Attio
WarmlyWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Attio
generating an extra 25% in GMV per month, thanks to Attio
Passionfroot
Vendor case study, attio.com, captured Oct 2, 2026
90% team adoption overnight, up from sub 50%
Taskrabbit
Vendor case study, attio.com, captured Oct 2, 2026
Warmly
installed it on his Webflow site in about 30 seconds
ScaleU
Vendor case study, warmly.ai, captured Oct 8, 2026
A $40K deal closed in just 7 days
Behavioral Signals
Vendor case study, warmly.ai, captured Oct 8, 2026
Questions about Attio and Warmly
Which is used more, Attio or Warmly?
Warmly has more customers on usedby: 30 against 20 for Attio.
Do companies use both Attio and Warmly?
usedby has not found a company with a confirmed or observed line on both Attio and Warmly yet.
Who uses Attio?
20 companies on usedby, each with the public page that shows it. See who uses Attio.
Who uses Warmly?
30 companies on usedby, each with the public page that shows it. See who uses Warmly.
How does usedby count customers?
A company counts when a public page shows it: a vendor's customer page, a case study, a press release or a job post, most saved with a dated capture. Every line is a customer, at one of three proof levels: confirmed, observed or signal (a job post, the weakest). A company is named as using both tools when its lines on both are confirmed or observed.