LangSmith43 customers
Used by 43 companies on usedby. 1 also uses E2B. Compare E2B and LangSmith
Source: langchain.com, latest capture Oct 3, 2026.
1 of the 23 E2B customers on usedby also uses another tool on this list. The tools most often used by the same companies are LangSmith (1 shared, 43 customers in all) and Langchain (1 shared, 32 customers in all).Latest check Oct 7, 2026: 291 of 303 public lines checked. Customer counts include every proof level, job-post signals included. Shared customers are counted on confirmed or observed lines on both tools.
1of 23
E2B customer also uses another tool on this list
LangSmith shares the most companies with E2B: 1 company uses both.
Ranked by shared customers
Tools of the same or a competing category, from another vendor, used by at least one company that also uses E2B. A shared customer has a confirmed or observed line on both tools.
| # | Alternative | Shared with E2B | Customers | Compare |
|---|---|---|---|---|
| 1 | LangSmith | 1 | 43 | Compare E2B vs LangSmith |
| 2 |  Langchain | 1 | 32 | Compare E2B vs Langchain |
Langchain32 customers
Used by 32 companies on usedby. 1 also uses E2B. Compare E2B and Langchain
Source: langchain.com, latest capture Oct 3, 2026.
Other LLM Ops & Frameworks tools on usedby
Same category, with public customers, but no company named with E2B yet.
Braintrust39 customers
Arize AI35 customers
TrueFoundry27 customers
Portkey22 customers
Comet Opik17 customers
Mem016 customers
CrewAI13 customers
Flowise13 customers
Galileo13 customers
Fiddler AI10 customers
Switch signals
A company that left one vendor's page and appeared on another's.
No switch publishedA switch needs a departure from one vendor's page, seen on two checks in a row, and a dated arrival on another. usedby does not publish departures yet, so no switch shows here.
By industry
Which of these tools the companies on usedby use, by industry. Each row counts the companies of that industry on usedby that use at least one of these tools.
| Industry | Most used | Next | Companies |
|---|---|---|---|
| Artificial Intelligence |  E2B27% | Braintrust13% | 15 companies |
| DevTools & Infrastructure | Braintrust67% | Arize AI13% | 15 companies |
| Fintech & Payments | Braintrust29% | LangSmith29% | 14 companies |
| IT Services & System Integration | Arize AI20% | Mem020% | 10 companies |
| HR & Recruiting | LangSmith56% | Langchain44% | 9 companies |
Read the first row as: among the 15 Artificial Intelligence companies on usedby that use one of these tools, 27% use E2B. Shares can add up to more than 100% because some companies use two tools.
Questions about E2B alternatives
Which tool shares the most customers with E2B?
LangSmith: 1 company uses both on usedby. LangSmith has 43 customers in all. See who uses LangSmith.
Do E2B customers use other tools too?
1 of the 23 E2B customers on usedby also uses another tool on this list. LangSmith shares the most: 1.
Which of E2B and its alternatives do Artificial Intelligence companies on usedby use?
Among the 15 Artificial Intelligence companies on usedby that use one of these tools, 27% use E2B. Braintrust comes next, with 13%.
Which of E2B and its alternatives do DevTools & Infrastructure companies on usedby use?
Among the 15 DevTools & Infrastructure companies on usedby that use one of these tools, 67% use Braintrust. Arize AI comes next, with 13%.
How does usedby rank E2B alternatives?
Only tools of the same or a competing category, from another vendor, count. They are ranked by shared customers: companies with a confirmed or observed line on both tools, from public pages, most with a dated capture. Tools with no shared customer are listed apart. Customer counts include every proof level, job-post signals included.