Actively maintained

ISBN is a simple field/widget module. It provides simple validation for ISSN-8, ISBN-10, and ISBN-13. Javascript validation is available. Display options include raw (as inserted) and clean (dashes and spaces removed).

Drupal 7 and 8 versions

For this version only validation through form submission is implemented. Javascript, format options and ISSN-8 would be nice to have.

Drupal 8 - Dependencies

Instead of reinventing the wheel, on Drupal 8 version of this module, both validation and format are done by an external library. The library used is Nicebooks ISBN library.
This library is already included to be download if you download ISBN module via Composer like:

composer require drupal/isbn

Instead of using Composer, this library can also be installed using the Ludwig module.

Mapdir is a small utility module that provides a very flexible and general functional programming (read: easy) mechanism for applying functions to all (or selected) files and subdirectories in a di

If you are using Drupal Commerce package in Drupal 7 (not Ubercart), this module is not needed.

Provides a field type to store geographical locations as pairs of latitude and longitude and the integration to display those locations through views, fields, and map providers.

Designed for multi-language sites, Language Sections provides a way of storing content sections for different languages in a single text area.

Applications include

• A simple multi-language site front-page.
• Views module header, footer and "empty" text sections, to make them "language aware".
• Translated Custom Tokens.
• Language-specific custom 404 pages etc.
• Text sections provided by other modules which do not offer multi-language capability.
• An easy to manage alternative to the Content translation module in some situations, typically on small sites.

Implements an IP address retention policy.