issn

Persistent identifier library for GNU Emacs

User-friendly Scopus and Journal Metrics data

An R package providing WorldCat API communication, functions for validating and normalizing bibliographic codes, translation from call numbers to subject, and other related utilities helpful for assessment librarians

List of valid, registered ISSN

Rich Context API integrations for federating metadata discovery and exchange across multiple scholarly infrastructure providers

journal-level metadata munging. part of fatcat project

A modular Lua package for barcode symbology

Generate bibtex entries from Document Object Identifiers (DOI)

Proof-of-concept demonstrator for the Journal Observatory project

ISSN Validation

The "12 barcodes API" provides a simple and efficient way to generate barcodes for your applications.

Detecting, normalizing, classifying, and extracting scholarly identifiers in R.

Converts any ISSN to the correspondent ISSN-L

A List of Core SCI Journals For Academics

Library of functions for working with Bibliographic Identifiers (ISBN, ISSN, ISMN)

A Python3 based Barcode, QR, Aztec and Datamatrix Generator with a fully working GUI.

A command-line ISBN & ISSN list converter for the SFX Dataloader.

ISSN delle riviste scientifiche e di Classe A pubblicati da ANVUR

Check-digit mathematics toolbox for DeepSeek Harness (dsh): generate, validate, repair and detect check digits for 15 schemes (Luhn, Verhoeff, Damm, ISBN, EAN, UPC, GTIN-14, ISSN, ISIN, CUSIP, IBAN, CAS, ABA) plus ISBN-10/13 conversion and a single-edit repair search — zero runtime dependencies