Pingendo vs Ruru: What are the differences?
Pingendo: Free, simple app for Bootstrap prototyping. Create quality HTML prototypes quickly, using popular open source tools like Bootstrap, LESS, Fontawesome and more; Ruru: Native Ruby extensions written in Rust. Native Ruby extensions in Rust.
Pingendo can be classified as a tool in the "Bootstrap Tools" category, while Ruru is grouped under "Language Extensions".
Ruru is an open source tool with 751 GitHub stars and 30 GitHub forks. Here's a link to Ruru's open source repository on GitHub.