On usedby, 14 companies use Kernel and 16 use Mem0. 1 company uses both, including Vercel.Latest check Oct 25, 2026: 30 of 30 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 Kernel, Mem0, or both
Every company with a public proof for at least one of the two tools.
13
listed for Kernel only
1
company uses both
15
listed for Mem0 only
On usedby, 13 companies are listed for Kernel only, 15 are listed for Mem0 only and 1 uses both, out of the 29 companies listed for at least one. An absent listing does not prove non-use.
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, Mem0 |
|---|---|
 Vercel | On or before Sep 2026 |
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Kernel
Mem0What customers report
Results as the vendor or the customer published them, with the source and the date.
Kernel
cutting browser cold starts by 333x
Stably
Vendor case study, kernel.sh, published May 26, 2026
Mem0
No reviewed story for Mem0 yet.
Questions about Kernel and Mem0
Which is used more, Kernel or Mem0?
Mem0 has more customers on usedby: 16 against 14 for Kernel.
Do companies use both Kernel and Mem0?
Yes. 1 company uses both on usedby, including Vercel.
Who uses Kernel?
14 companies on usedby, each with the public page that shows it. See who uses Kernel.
Who uses Mem0?
16 companies on usedby, each with the public page that shows it. See who uses Mem0.
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 four proof levels: confirmed, declared by the company itself, 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.