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Who uses it, and for what
One row per story. The grade is for the claim that the business uses this tool, not for its revenue.
| Story | What it does there | When | Cost stated | Grade | Source |
|---|---|---|---|---|---|
| Oleve (Quizard AI and Unstuck AI) | Feature flags that route model traffic between providers, reorder ingestion services and run paywall experiments without a code push. | C | AI Engineer: The New Lean Startup, talk by Sid Bendre at the AI Engineer World's Fair 2025, with written version | ||
| AskVinny | Turns features on for chosen customers and manages gradual rollouts. | C | Ask Vinny Sub-Processors List, last updated November 2026 |
Grade A: the tool's maker or a payment processor confirms the use. Grade B: an independent report, or the tool is visible in public code. Grade C: the founder or the company says so.
Used in the same businesses
Other tools in the stories above, with the number of stories that share both.
Other tools for the same job
Running it, with the number of stories that use each.