Who uses Tessl?
Agent enablement platform to build, evaluate, secure and share skills and context for AI coding agents. tessl.io
11
companies use Tessl
11 companies use Tessl. 18% are in Telecommunications. Confirmed or observed customers include Cisco, DeepL, and Intercom. 1 of them is confirmed by a published case study, quote or press release.Latest check Oct 6, 2026: 11 of 11 companies checked, from 2 public sources.
- Category
- Autonomous Coding Agents
- Customers by proof
- 1 confirmed, 10 observed
- Top industry
- Telecommunications, 18% of customers
- Security
- SOC 2 Type IISource: trust.tessl.io, checked Oct 8, 2026
- Pricing
- FREE: $0 month; TEAM: $100 month; ENTERPRISE: contact salesSource: tessl.io, checked Oct 8, 2026
- Website
- tessl.io
What Tessl does
Tessl gives engineering organizations a registry and control plane for the skills and context their AI coding agents use. Teams publish and install skills, run before-and-after evals to catch regressions, scan skills for security risks and run agent loops such as automated code review and documentation maintenance. It targets teams scaling coding agents across many developers.
Written by usedby from tessl.io.
Main features
Common uses
11 companies use Tessl
Every company below links to the public page that shows it uses Tessl. Open a row to see the dated capture.
Customers over time: appears once we have six months of archived captures.
| Company | Industry | Proof |
|---|---|---|
 Cisco | Telecommunications | |
 DeepL | Artificial Intelligence | |
 Intercom | Sales Tech & CRM | |
 RingCentral | Telecommunications | |
 Zillow | PropTech & Management | |
 ByteDance | — | |
 DoubleVerify | Advertising & AdTech | |
 JetBrains | DevTools & Infrastructure | |
 JustEat | — | |
 Rakuten TV | Streaming & Content |
Is Tessl right for your company?
See what companies in your industry use, from the companies we track. Pick your industry.
Of the 69 Telecommunications companies on usedby, 2 are listed as Tessl customers. 1 uses only another Autonomous Coding Agents tool.
- Tessl only, 3%
- Tessl and another tool in Autonomous Coding Agents, 0%
- Another tool in Autonomous Coding Agents only, 1%
- No Autonomous Coding Agents tool we can see, 96%
These are companies usedby tracks because a public page names them, often Tessl's own customer page. It is not a market share. A company counts once, whatever the number of tools it uses.
What customers report
Results as published by Tessl and its customers. Each one links to its dated source. We quote, we do not score.
We have tens of thousands of engineers using AI tools daily who need support to shift from prompting to context engineering.Before you buy Tessl
What Tessl publishes on the points buyers check first, each with its source and check date.
| Security | SOC 2 Type II | trust.tessl.io, checked Oct 8, 2026 |
|---|---|---|
| Pricing | FREE: $0 month; TEAM: $100 month; ENTERPRISE: contact sales | tessl.io, checked Oct 8, 2026 |
Questions to ask in your demo
- Which of your customers look like us, by industry and size?
- What does a pilot cost, and what decides the move to a full contract?
- Where is our data stored, who can access it, and is it used to train models?
- How does Tessl work with the tools we already use?
Tessl alternatives
Questions about Tessl
Who uses Tessl?
11 companies use Tessl, including Cisco, DeepL, and Intercom.
Which industries use Tessl?
The industries with the most Tessl customers are Telecommunications (2), Advertising & AdTech (1), and Artificial Intelligence (1).
How does usedby know who uses Tessl?
Each company is linked to a public page that names it: Tessl's customer page, a published case study, a press release or a job post. We save each page with a dated capture and check it again on each run. A company leaves the list only after three checks in a row that no longer find it, and at least 14 days after it was last seen. A company with a published case study or quote is never removed automatically.
What do confirmed, observed and signal mean?
Confirmed (1): a case study, a named quote or a press release. Observed (10): Tessl shows the company on its own pages, for example a logo wall. Signal (0): a job post shows the company’s employees use Tessl, the weakest proof. Every level counts as a customer, and each line shows its level.
How current is this list?
The most recent check was on October 6, 2026, and 11 of 11 companies on this list have been checked so far. A company leaves the list only after three checks in a row that no longer find it, and at least 14 days after it was last seen. A company with a published case study or quote is never removed automatically.
Changes and sources
New customers
No new customer yet. Tracking of Tessl started on October 6, 2026. New customers appear after two complete checks of its pages.