Composio vs Merge: who uses which
Customers, public proof and the companies that use both.
On usedby, 32 companies use Composio and 30 use Merge. 1 company uses both, including Zoom. Composio leads among the Artificial Intelligence companies on usedby that use either tool.Latest check Nov 13, 2026: 62 of 62 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 Composio, Merge, or both
Every company with a public proof for at least one of the two tools.
31
listed for Composio only
1
company uses both
29
listed for Merge only
On usedby, 31 companies are listed for Composio only, 29 are listed for Merge only and 1 uses both, out of the 61 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 |
|---|
 Zoom |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use Composio, Merge or both: a share of the companies on usedby, not of the market.
Listed for Composio onlyBothListed for Merge only
More common with Composio
- Artificial Intelligence8 of the 13 Artificial Intelligence companies on usedby that use either tool use Composio.
- DevTools & Infrastructure3 of the 5 DevTools & Infrastructure companies on usedby that use either tool use Composio.
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.
Vendor facts checked: Composio, 2 of 4; Merge, 0 of 4. Missing facts remain unverified, not absent features.
Composio
MergeWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Composio
Through Composio, Atomic Agent has used 50+ apps and exercised 336 distinct tools
Atomic Agent
Vendor case study, composio.dev, captured Nov 12, 2026
an estimated 700 engineering days of baseline build effort
Spinnable
Vendor case study, composio.dev, captured Nov 12, 2026
Merge
we save more than $500k of engineering costs per year
Disclo
Vendor case study, merge.dev, captured Nov 12, 2026
we're able to save thousands of engineering hours every year with Merge
deskbird
Vendor case study, merge.dev, captured Nov 12, 2026
Questions about Composio and Merge
Which is used more, Composio or Merge?
Composio has more customers on usedby: 32 against 30 for Merge.
Do companies use both Composio and Merge?
Yes. 1 company uses both on usedby, including Zoom.
Who uses Composio?
32 companies on usedby, each with the public page that shows it. See who uses Composio.
Who uses Merge?
30 companies on usedby, each with the public page that shows it. See who uses Merge.
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.