Galaaz is R-on-Rails: R scientists keep GNU R (CRAN / Bioconductor) for statistics and graphics, and use Ruby—often Rails—to put that work on the web (HTTP, auth, jobs, HTML) without rewriting analyses in another stack. Ruby developers also get full access to R libraries through the same bridge. Galaaz 2.0 talks to standard GNU R in a separate process. A bridge handles requests, results, and typing so you can drive R from Ruby (calling R functions, loading packages, and working with R objects). **JRuby** and **CRuby** are both supported for the same NewBridge protocol (tested with JRuby 10.1.1.0 + Java 21, and CRuby 3.3). Like RinRuby, rpy2, or reticulate, Galaaz is a cross-language bridge; unlike embedding a second interpreter in one VM, using GNU R means compiled R packages and Bioconductor work as usual. Large tables can optionally flow through Apache Arrow on the R side when you use the helpers described in the project documentation. You need JRuby or CRuby and a working GNU R installation in PATH for the bridge to run. Build the native gatekeeper after install with: make -C ext/new_bridge all