Modules for Backdrop CMS

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.

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.

Converts a HTML page to PDF using mPDF PHP Library.
It allows you to generate the following pdf documents of any node:

www.example.com/node/nid/pdf

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

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

This module adds the select2 widget to all select elements in a webform.

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

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.

This is a simple module that provides settings to limit the number of values to
display on fields with multiple values. (For example, in an image field
with multiple images, you may only wish to display one in the teaser view).

This module provides an additional formatter to render values in core fields as
HTML or comma-separated lists. This works with taxonomy terms, entity reference
fields, link fields, and text fields.