This is the web application powering the Journal of Open Source Software (JOSS), a diamond open-access journal that publishes peer-reviewed papers about research software. It is a monolithic Ruby on Rails application (Rails 7.2 / Ruby 3.3) that manages the complete lifecycle of academic submissions, from author submission through editorial review, publication, and DOI minting. The system is deeply integrated with the GitHub API (via Octokit) to manage review issues, labels, and comments, effectively using GitHub as a collaboration platform for the peer review process. It features a sophisticated state machine for paper workflows (submitted, under review, accepted, rejected, retracted), ORCID-based authentication, Elasticsearch-powered search, and automated notification emails. Key architectural components include a webhook dispatch controller for processing GitHub events, a feature flag system (JournalFeatures), a blocklist for preventing spam submissions, and a structured editorial board management system with tracks and subjects. The frontend uses Bootstrap 4.3.1 with Hotwired Turbo and custom JavaScript. Background tasks are handled by Rake tasks (cron jobs via Heroku Scheduler). While the core application is well-maintained and actively developed, it shows signs of technical drift in its frontend dependencies (Bootstrap 4, jQuery) and relies on a custom Rails configuration DSL. The codebase is well-tested with RSpec and system specs, making it a robust platform for its specific domain.
Fiji (Fiji Is Just ImageJ) is a comprehensive scientific image processing platform built on ImageJ. This is a portable application distribution rather than a library, designed for life sciences research with cross-platform support (Windows, Linux, macOS). The codebase implements a monolithic application architecture with a plugin system based on SciJava, supporting multiple scripting languages (Java, JavaScript, Python, Ruby, Clojure, BeanShell, ImageJ Macro). It manages plugin dependencies via Maven-based update sites and provides a launcher system that handles platform-specific native library paths and JVM configuration. The repository demonstrates significant engineering craftsmanship in its cross-platform build automation, legacy compatibility layer for ImageJ 1.x, and service abstraction patterns. However, it carries technical debt through deprecated components (fiji.Main, bin/ImageJ.sh), version drift between pom.xml (2.18.1-SNAPSHOT) and Info.plist (2.0.2), and heavy reliance on shell scripts for platform-specific logic. The codebase is actively maintained with recent commits but has 138 open issues indicating ongoing development challenges.