Doorstop vs ProR

Doorstop manages textual requirements alongside source code in version control. It stores requirements and other linkable items as YAML files in directories that form documents, then organizes those documents into a tree and can validate traceability across it. It publishes document hierarchies and trace matrices as plain text, HTML, LaTeX, or Markdown; templates can shape output, and HTML and LaTeX publishing use them. Requirements can be imported or exported as YAML, CSV, TSV, or Excel files. Doorstop requires Python 3.10 or later and Git or another version control system, and it can be added to a Poetry project. It runs on Linux, macOS, and Windows, with API and self-hosted options, including standalone web-server or WSGI deployment. An experimental desktop GUI handles basic editing. The tool is free at free and licensed under LGPLv3. Baseline support and version history are listed, but approval workflows are not.

ProR has no write-up on Specifiction yet; its figures are above.