If the authors are listening, I think the tool you have in mind is called Sahi (not Sachi). Also, you lump it with proprietary solutions unfairly when you say:

> Finally, Sachi, RFT, and UFT are expensive enterprise solutions that require local installation, certain servers, runtime licenses and lots of config. Being difficult to learn, hard to maintain, and costly, none of these solutions beats the open-source and free Selenium. End of story.

Sahi is open source and is hosted on SourceForge: https://sourceforge.net/projects/sahi/files/