Codeium18 customers
Used by 18 companies on usedby, 4 of them in IT Services & System Integration. 2 also use Tessl.
Source: codeium.com.
3 of the 11 Tessl customers on usedby also use another tool on this list. The tools most often used by the same companies are Codeium (2 shared, 18 customers in all), Replit (1 shared, 31 customers in all), and Augment Code (1 shared, 28 customers in all).Latest check Oct 8, 2026: 288 of 322 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.
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Tessl customers also use another tool on this list
Codeium shares the most companies with Tessl: 2 companies use 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 Tessl. A shared customer has a confirmed or observed line on both tools.
| # | Alternative | Shared with Tessl | Customers | Compare |
|---|---|---|---|---|
| 1 | CodeiumMostly IT Services & System Integration (4) | 2 | 18 | |
| 2 |  Replit | 1 | 31 | |
| 3 |  Augment Code | 1 | 28 |
Replit31 customers
Used by 31 companies on usedby. 1 also uses Tessl.
Source: replit.com, latest capture Oct 7, 2026.
Augment Code28 customers
Used by 28 companies on usedby. 1 also uses Tessl.
Source: augmentcode.com, latest capture Oct 6, 2026.
Other Autonomous Coding Agents tools on usedby
Same category, with public customers, but no company named with Tessl yet.
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 |
|---|---|---|---|
| DevTools & Infrastructure |  Cursor36% |  Warp18% | 28 companies |
| Fintech & Payments | Cursor36% | Augment Code14% | 14 companies |
| IT Services & System Integration | Codeium31% |  Cline23% | 13 companies |
| Artificial Intelligence | Cursor33% | Warp33% | 12 companies |
| HR & Recruiting | Cursor63% |  Qodo25% | 8 companies |
Read the first row as: among the 28 DevTools & Infrastructure companies on usedby that use one of these tools, 36% use Cursor. Shares can add up to more than 100% because some companies use two tools.
Questions about Tessl alternatives
Which tool shares the most customers with Tessl?
Codeium: 2 companies use both on usedby. Codeium has 18 customers in all. See who uses Codeium.
Do Tessl customers use other tools too?
3 of the 11 Tessl customers on usedby also use another tool on this list. Codeium shares the most: 2.
Which of Tessl and its alternatives do DevTools & Infrastructure companies on usedby use?
Among the 28 DevTools & Infrastructure companies on usedby that use one of these tools, 36% use Cursor. Warp comes next, with 18%.
Which of Tessl and its alternatives do Fintech & Payments companies on usedby use?
Among the 14 Fintech & Payments companies on usedby that use one of these tools, 36% use Cursor. Augment Code comes next, with 14%.
How does usedby rank Tessl 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.