A curated list of awesome Unique ID libraries and resources.

Unique identifiers are used everywhere. This list contains awesome projects you can use that generate IDs or hash them for security.

• Generation
• Hash
• Research
• Contributors

• uuidv7 (RFC9562 uuidv7 reference) - UUID 128-bit unique identifier that is time-sortable with 1 ms precision.

• uuid (npm) - Simple, fast generation of RFC4122 UUIDS.
• ulid (npm) - Universally Unique Lexicographically Sortable Identifier.
• cuid2 (npm) - Secure, collision-resistant ids optimized for horizontal scaling and performance. Next generation uuids.
• nanoid (npm) - A tiny, secure URL-friendly unique string ID generator for JavaScript.
• crypto-random-string (npm) - Generate a cryptographically strong random string.
• yeast (npm) - Yeast is a unique id generator.
• shortid (npm) - Amazingly short non-sequential url-friendly unique id generator.
• lodash.uniqueid (npm) - The lodash method uniqueId exported as a Node.js module.
• uniqid (npm) - A Unique Hexatridecimal ID generator.
• puid (npm) - Generate a unique ID depending on time, machine and process for use in a distributed environment.
• flake-idgen (npm) - Flake ID generator yields k-ordered, conflict-free ids in a distributed environment.
• get-uid (npm) - Simple random id generator.
• uniqueid (npm) - Generate sequential IDs, with optional prefix or suffix.
• hyperid (npm) - Uber-fast unique id generation, for Node.js and the browser.
• uid (npm) - Generate unique ids of any length.
• uid-safe (npm) - URL and cookie safe UIDs.
• uuid-readable (npm) - Generate Easy to Remember, Readable UUIDs, that are Shakespearean and Grammatically Correct Sentences.
• human-id (npm) - Generates human-readable identifier strings by chaining common (short) words of the English language.
• unique-sequence (npm) - Generate short sequential strings.
• breezeid (npm) - Easily generate unique, human-first IDs
• Sqids (npm) - Sqids is a small JavaScript library to generate YouTube-like ids from numbers.
• ksuid (npm) - K-Sortable Globally Unique IDs

• muid (PyPI) - Generates IDs whose hashes are, in part, memorable. See video explanation

• xid - Xid is a globally unique id generator thought for the web.
• ksuid - K-Sortable Globally Unique IDs.

• RoboHash (GitHub) - Generate unique images from any text.

• Articles/papers

  • The definitive guide to modulo bias and how to avoid it - Generate unbiased random numbers.
  • Efficiently generating a number in range - Discusses performance problems in PRNGs and many algorithms.
  • Understanding modulo bias

• Collision calculators

  • Devina.io collision calculator
  • Nano ID collision calculator (by Alexey Komarov)
  • Nano ID collision calculator (by Aleksandr Zhuravlёv)

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