Modules can add new features to your Backdrop site, or improve the way your existing features currently work.

  1. Passphrase policy

    Enforce restrictions on user passwords by defining a password policy that encourages the use of pass phrases.

  2. Similar Entries

    Provides a default View with block display for listing published content that
    is similar to the content being viewed.

    This module uses MySQL's FULLTEXT indexing for MyISAM tables, and should
    automatically add the index when you activate the module for the first time.

  3. Http:BL

    Provides IP-based blacklisting through http:BL and allows linking to a honeypot by using Project Honeypot (http://www.projecthoneypot.org/).

  4. Markdown filter

    Provides Markdown filter integration for Backdrop input formats. The
    Markdown syntax is designed to co-exist with HTML, so you can set up
    input formats with both HTML and Markdown support. It is also meant to
    be as human-readable as possible when left as "source".

  5. Markdown Extra filter

    Don't use this module.

    Markdown Extra merged into Markdown.

  6. Previous login

    Add a detective security control to Backdrop by displaying the previous login timestamp after a successful login.

  7. robots.txt

    Control the contents of your robots.txt file through Backdrop configuration.

  8. Session expire

    Deletes user sessions which have been idle longer than a configured time.

    On busy sites, the sessions table can grow to be very large, and that can cause slow accesses to it, as well as slow writes due to locking, leading to performance bottlenecks.

  9. Session limit

    Limit the number of simultaneous sessions users may have. Limits can be applied by role and per account.

    Force users to log out of any extra sessions after they exceed the administrator-defined maximum.

  10. Site verification

    Verify ownership of your Backdrop website to search engine services.

    Supported vendors are:

  11. Ejector Seat

    Use Javascript (ajax) code to check periodically to see if a user is still logged in. If the user is NOT logged in, the current page is reloaded so that the user sees the page as an anonymous user.

  12. Redirect 403 to User Login

    Redirect the HTTP 403 error page to the Backdrop /user/login page.

  13. Bot repellent

    Add the X-Robots-Tag HTTP header to instruct search index bots on permissible activity.

  14. Bad judgement

    Trust me. You shouldn't be enabling this module.

    But if you do enable this module, you shouldn't be enabling the module that
    requires this module either.

  15. Paranoia

    Impose additional restrictions on the granting of elevated privileges to anonymous and authenticated user roles.

  16. Member for hack

    Alter the creation date on a user profile that is used for displaying the "Member for" time period.

    Suggested altered creation dates:

  17. Text sitemap

    Creates a virtual sitemap.txt file for indexing by search engines.

  18. Disable login errors

    Prevent user enumeration by blocking the display of all login error messages. A user attempting to login will not be aware if the account exists, an invalid user name or password has been submitted, or if the account is blocked.

    Some of the messages which are hidden include:

  19. Flood control

    Add an administration interface for hidden variables that limit login attempts and contact form submissions in Backdrop.

  20. Diskfree

    Get a disk utilization report in Backdrop's status report and a cron-triggered e-mail warning when locally mounted disk space on your Backdrop server reaches a preset threshold.

    The alert e-mail uses the following template:

  21. Clear Password Field

    This Backdrop module clears common password form fields.

  22. X-Originating-IP

    Add the X-Originating-IP header to all outgoing Backdrop emails to assist with investigation of the sources for spam and unsolicited bulk email.

  23. Remove Generator

    Remove Backdrop's Generator META tag to hinder web application fingerprinting.