Merge pull request #34 from zdql/patch-1

Update readme.md

Author: a69

readme.md

@@ -101,6 +101,7 @@ Ideal for developers, teams, researchers, and tech enthusiasts looking to levera
 - **[Warp AI](https://warp.dev/ai)**: AI-enhanced terminal with intelligent command suggestions and workflow optimization.
 - **[Fig](https://fig.io/)**: Terminal autocomplete and AI assistance tool for command-line productivity (now part of AWS).
 - - **[Codeflash](https://www.codeflash.ai/)**: Ship Blazing-Fast Python Code — Every Time. `#freemium`
+- - **[Echo](https://echo.merit.systems/)**: Open-source Billing and Auth solution. Build AI apps and earn profit on every token your users generate with easy to use templates. 5 line change from the Vercel AI SDK. [#opensource](https://github.com/Merit-Systems/echo)
 
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