Package Name Generator

npm names must be lowercase, URL-safe, under 214 characters, and may be scoped as @scope/name; hyphens are fine, spaces and capitals are not. PyPI names may use letters, digits, hyphens, underscores and dots, but hyphens, underscores and dots are normalized to the same thing, so choose one spelling and use it everywhere. crates.io allows letters, digits, hyphens and underscores, is case-insensitive and has no namespaces, so short unscoped names go fast. Go has no registry names at all; the module path is the import path, and convention is a short, all-lowercase final segment with no underscores.

Both work, and the ecosystem tends to decide. Utility libraries with one clear job benefit from a descriptive compound (editdistance, formcheck, geocodex) because people find them by searching for the job. Frameworks, runtimes and anything that will grow beyond its first feature do better with an invented or borrowed word (tokio, serde, orbo, trellis) that does not promise a single feature. A pun on the job (lintroller, leafblower for tree shaking, picklejar for Gherkin fixtures) gives you the memorability of a brand with a hint of the function.

Java and Kotlin package names follow the reverse-domain convention: take a domain you control, reverse it, and append the project, so a team at hearth.dev shipping a router would use dev.hearth.router. Keep every segment lowercase, avoid hyphens (use nothing or an underscore), and do not start a segment with a digit. The names on this page work as the final segment; pair one with your reversed domain and you have a valid, unique package name.

They are original suggestions, but registries are enormous, so a few will already be taken by the time you read this, and some short words are bound to exist somewhere. Treat each one as a starting point: check the registry, check GitHub for an active project with the same name, and run a quick trademark search if you plan to build a company or product around it. If the plain name is gone, the scoped or hyphenated form is usually still available.