The full source code, documentation, and user interface files for the RAAC Similarity Tool v1 are available in the private GitHub repository: https://github.com/lixuliu/raac_similarity_v1.git. An interactive, browser-based version of the application (index.html) is hosted via GitHub Pages at: https://lixuliu.github.io/raac_similarity_v1. Access to this interface is restricted and protected by a password. Please refer to the included README.md file for technical specifications, setup instructions, and usage guidance. This deposit corresponds to version 1.0 of the tool, developed through a C-DICE industrial secondment, with funding and collaboration from Imfuna Ltd. The University of Birmingham acted as the contracting institution, and Loughborough University contributed as an academic partner. The associated GitHub repository, listed under “Related Resources,” may continue to be updated beyond this archived version. Future releases may be distributed under different licensing or access terms as appropriate.