On usedby, 28 companies use Blip and 51 use Sierra. 1 company uses both, including Santander. Blip leads among the Consumer Goods companies on usedby that use either tool, Sierra among the Fintech & Payments companies.Latest check Oct 9, 2026: 79 of 79 public lines checked. Counts include every proof level, job-post signals included. A company on both tools counts at any proof level, and a job post on one side is marked as such.
Who uses Blip, Sierra, or both
Every company with a public proof for at least one of the two tools.
27
use only Blip
1
company uses both
50
use only Sierra
27 companies use only Blip, 50 use only Sierra and 1 uses both, out of the 78 companies on usedby that use at least one of them.
Where it lands
Recently publicly listed customers
Who uses both
Companies with a public line on both tools, at any proof level: the strongest proofs come first, and a job post is marked.
| Company | First public proof, Sierra |
|---|---|
 Santander | On or before Aug 2026 |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use Blip, Sierra or both: a share of the companies on usedby, not of the market.
Blip onlyBothSierra only
More common with Blip
- Consumer Goods5 of the 6 Consumer Goods companies on usedby that use either tool use Blip.
- Banking & Mortgages4 of the 5 Banking & Mortgages companies on usedby that use either tool use Blip, 1 of them alongside Sierra.
More common with Sierra
- Fintech & Payments8 of the 8 Fintech & Payments companies on usedby that use either tool use Sierra.
- Retail4 of the 7 Retail companies on usedby that use either tool use Sierra.
Source: every usedby line, from confirmed proofs to job-post signals (the weakest proof level).
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
BlipSierraWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Blip
No reviewed story for Blip yet.
Sierra
Nearly 1,000 hours per month returned to exception handling and high-value work
RunBuggy
Vendor case study, sierra.ai, published Feb 3, 2026
Questions about Blip and Sierra
Which is used more, Blip or Sierra?
Sierra has more customers on usedby: 51 against 28 for Blip. Blip leads among the Consumer Goods companies on usedby that use either tool, Sierra among the Fintech & Payments companies.
Do companies use both Blip and Sierra?
Yes. 1 company uses both on usedby, including Santander.
Who uses Blip?
28 companies on usedby, each with the public page that shows it. See who uses Blip.
Who uses Sierra?
51 companies on usedby, each with the public page that shows it. See who uses Sierra.
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 counts as using both tools when it has a line on each, at any level; the list shows the strongest proofs first and marks job posts.