gitdebt

gitdebt is a web-based analytics platform that visualizes GitHub repository metrics and health indicators. It combines star history charts with technical signals derived from commit analysis, giving developers and maintainers a clearer picture of how a project is actually doing beyond just the star count. The tool addresses a gap in how we evaluate open source projects. Stars tell you popularity, but they say nothing about whether a project is actively maintained, whether knowledge is concentrated in one contributor, or whether the codebase is accumulating technical debt faster than it gets fixed.

The core problem is that GitHub's native interface shows surface metrics without surfacing deeper health signals. You can see that a library has 40,000 stars, but you can't tell whether commits have slowed to a trickle, whether a single maintainer handles everything, or how the star growth trajectory compares to alternatives you're evaluating. gitdebt pulls this information from public repository data and presents it in readable charts that actually answer the questions developers care about when choosing dependencies or assessing the health of their own projects.

The platform generates live reports displaying several categories of metrics. Star history shows the accumulation curve over time, which reveals growth patterns, viral moments, and plateaus. File change frequency indicates how actively the codebase evolves, measuring what gitdebt calls shipping velocity. Contributor concentration, measured through the bus factor metric, shows how distributed the knowledge base is across the team. Fix-labeled change ratios compare maintenance work against feature development, hinting at whether technical debt is piling up or being addressed. The platform also tracks known technical debt by following the movement of TODO and FIXME comments across commits. Each of these metrics appears as a visual chart, and you can export them in SVG, PNG, WebP, or GIF formats for embedding directly in READMEs or documentation.

One of the more practical features is the comparison builder. You can overlay up to eight repositories on the same chart, which is useful when evaluating competing libraries or frameworks. The tool includes pre-built comparison categories for common choices like frontend frameworks (six projects), JavaScript build tools (six projects), AI coding tools (six projects), and SQL databases (seven projects), so you don't have to assemble the comparisons yourself. There's also a toggle between calendar-date views and normalized-start views. The normalized view aligns all repositories to the same starting point, letting you compare growth trajectories fairly regardless of when each project launched. This equal-start comparison is particularly useful when comparing a young project against an established one, since raw star counts would otherwise make the comparison meaningless.

The badge studio rounds out the embedding features. It generates theme-aware embeddable assets that adapt to dark and light mode, so charts fit naturally into projects regardless of how the documentation is styled. Assets use cacheable URLs with attribution links, and the single-snippet embedding makes integration straightforward. This makes gitdebt particularly useful for maintainers who want to showcase their project's health metrics without manually updating images. The charts pull live data, so your README stays current without intervention.

gitdebt targets three main audiences. Open source maintainers use it to track their own project's health over time and spot warning signs before they become problems. Project evaluators use the comparison tools to vet dependencies before committing to them, checking whether a library with impressive stars actually has healthy maintenance patterns. Documentation authors use the embeddable charts to add visual metrics that communicate project status at a glance. The pre-curated comparison categories make it easy to explore alternatives in a given space without manually researching which projects to include.

The tool is completely free, open source under the MIT license, and requires no authentication or sign-up for basic lookups. An optional GitHub login enables personalized features, but the core functionality works without it. The codebase is hosted publicly at zhom/gitdebt on GitHub. You point it at any public repository URL and get results immediately, which makes it one of the lower-friction options in this space. The platform is web-based and requires a JavaScript-enabled browser. The tradeoff is scope. It works only with public GitHub repositories, so it won't help with private repos, enterprise installations, or projects hosted on GitLab or Bitbucket. If your evaluation needs stay within public GitHub, that limitation rarely matters.