On usedby, 31 companies use Daytona and 26 use E2B. 1 company uses both, including Meta. Daytona leads among the DevTools & Infrastructure companies on usedby that use either tool, E2B among the Artificial Intelligence companies.Latest check Oct 27, 2026: 57 of 57 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 Daytona, E2B, or both
Every company with a public proof for at least one of the two tools.
30
listed for Daytona only
1
company uses both
25
listed for E2B only
On usedby, 30 companies are listed for Daytona only, 25 are listed for E2B only and 1 uses both, out of the 56 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, E2B |
|---|---|
 Meta | On or before Oct 2025 |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use Daytona, E2B or both: a share of the companies on usedby, not of the market.
Listed for Daytona onlyBothListed for E2B only
More common with Daytona
- DevTools & Infrastructure6 of the 9 DevTools & Infrastructure companies on usedby that use either tool use Daytona.
More common with E2B
- Artificial Intelligence16 of the 20 Artificial Intelligence companies on usedby that use either tool use E2B.
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.
DaytonaE2BWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Daytona
95% faster execution of SWE-Bench Verified
Martian
Vendor case study, daytona.io, captured Oct 27, 2026
90% savings on infrastructure costs compared to an in-house build
Writer
Vendor case study, daytona.io, captured Oct 27, 2026
E2B
More than 60% lower customer latency for heavy Replicas workloads after moving to E2B.
Replicas
Vendor case study, e2b.dev, published Aug 27, 2026
Approximately 600,000 sandboxes per day.
Arena (LMArena)
Vendor case study, e2b.dev, published Oct 1, 2026
Questions about Daytona and E2B
Which is used more, Daytona or E2B?
Daytona has more customers on usedby: 31 against 26 for E2B. Daytona leads among the DevTools & Infrastructure companies on usedby that use either tool, E2B among the Artificial Intelligence companies.
Do companies use both Daytona and E2B?
Yes. 1 company uses both on usedby, including Meta.
Who uses Daytona?
31 companies on usedby, each with the public page that shows it. See who uses Daytona.
Who uses E2B?
26 companies on usedby, each with the public page that shows it. See who uses E2B.
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.