For a filterable list of addons aggreating all Plone related packages from PyPi see

collective.consent

Ask users for consent to different topics, before they can continue.

collective.dexteritytextindexer

Dynamic SearchableText index for dexterity content types. For Plone 6 this was merged into Plone core.

collective.documentgenerator

Generate Documents (.odt, .pdf, .doc) from content based on appy framework (https://appyframe.work/) and OpenOffice/LibreOffice.

collective.documentviewer

Very nice document viewer that integrates DocumentCloud viewer and PDF processing into Plone.

collective.easyformplugin.createdx

Creates Plone content objects from EasyForm submissions.

collective.embeddedpage

A content type to embed remote HTML pages in Plone Classic and Volto.

collective.folderishtraverse

Traverse to first item in folder.

collective.folderishtypes

Provides the types "Folderish Event", "Folderish News Item" and "Folderish Document" as replacements for default types. Those types are able to hold any other content, like a Folder.

collective.geolocationbehavior

Geotagging for Plone content using LeafletJS.

collective.glossary

Content type to define a glossary and its terms.

collective.immediatecreate

Create content immediatly and skip the add form.

collective.lineage

Subsites: Turns subfolders of a Plone site to appear as autonomous Plone sites. There is also a whole ecosystem off addons specific to subsites.

collective.mailchimp

MailChimp newsletter integration for Plone.

collective.mirror

A content type that mirrors the content of any other container.

collective.mustread

Tracking user views on content that are marked as must-read.

collective.person

A content type to represent a person, with an optional behavior to connect it to a Plone user.

collective.pdfjs

Plone integration for Mozilla's JavaScript PDF reader.

collective.remoteproxy

Proxy for remote content. All remote URLs for which a local proxy was created are replaced in the resulting content.

collective.restrictportlets

Allows you to restrict the available portlets that non-Managers can add.

collective.workspace

Easily manage 'membership' in specific areas of a Plone Site. It allows to grant people access to areas of content using a membership group rather than local roles for each user, and to delegate control over that group to people who don't have access to the site-wide user/group control panel.

dexterity.membrane

Enables content to be used as users and groups in Plone sites.

plone.pdfexport

Generic PDF export functionality for Plone content.

Products.EasyNewsletter

Powerful newsletter/mailing product for Plone.

zopyx.ipsumplone

Creates demo content and demo images for Plone.

collective.folderorder

Allows alternative ordering on plone folders.

collective.a11ycheck

Reports accessibility issues to your site editors when a page is saved.

collective.collabora

Collabora Online integration for Plone to provide collaborative document editing.

collective.bbcodesnippets

Provides generic and extensible BBCode markup integration for Plone.

collective.richdescription

Formatable description field for Plone.

cioppino.twothumbs

Rate content using up- and down-thumbs.

collective.bookmarks

Bookmarks/ favorites/ wish-list for Plone.

collective.collectionfilter

Faceted navigation filter for collection or contentlisting tiles.

collective.elasticsearch

Use Elasticsearch as the search backend for Plone.

collective.elastic.plone

Elasticsearch Integration for Plone content.

collective.searchandreplace

Find and replace text in Plone content objects.

collective.solr

Solr search engine integration for Plone.

collective.taxonomy

Create, edit and use hierarchical taxonomies to categorize content.

eea.facetednavigation

Very powerful interface to improve search without programming skills. Configuration is done through-the-web and lets you gradually select and explore different facets (metadata/properties) of the content and narrow down you search quickly and dynamically.

Products.PloneKeywordManager

Change, merge and delete keywords/tags/subjects).

zopyx.typesense

Plone integration with the external Typesense search server (open-source). This is an alternative to collective.solr or Elasticsearch.

plone.app.mosaic

Powerful and extendable editor that allows users to compose the content of a page with different tiles.

collective.cover

Cover allows the creation of elaborate covers built around a drag-and-drop interface. Uses the same blocks/tiles ecosystem as plone.app.mosaic but a different approach to editing.

collective.contentsections

Offers a block approach for Plone 6 Classic based entirely on Dexterity content types.

collective.gridlisting

Adds a dexterity behavior and a browser template to manipulate folder and collection listings by adding Bootstrap 5 CSS classes and pat-masonry from patternslib.

plone.app.standardtiles

A set of standard tiles used by Mosaic, but can be used from any other tile manager.

collective.tiles.carousel

A slider tile for plone.app.mosaic based on the carousel component of Bootstrap 5.

collective.tiles.advancedstatic

A tile that shows html text (similar to the static text portlet), with some additional configuration like the possibility to add custom css classes.

collective.tiles.collection

A tile that shows a set of collection results with possibility to choose (and develop) custom layouts.

collective.easyformplugin.registration

Add a behavior to collective.easyform to manage registration forms for events.

collective.fullcalendar

Display events in a nice calendar UI using https://fullcalendar.io.

collective.venue

Venue type with geolocation support for use with events or any other location specific content.

collective.easyform

EasyForm provides a Plone form builder through-the-web using fields, widgets, actions and validators. Form input can be saved or emailed. A simple and user-friendly interface allows non-programmers to create custom forms.

collective.fieldedit

A flexible form to edit selected fields of a content type.

collective.honeypot

Honeypot protection for forms.

collective.z3cform.datagridfield

A field with a datagrid (table), where each row is a sub form.

collective.z3cform.norobots

A "human" captcha widget based on a list of questions/answers.

plone.formwidgets.hcaptcha

HCaptcha widget to protect Plone from bots, spam, and other forms of automated abuse.

yafowil.plone

Yafowil is a form library for Python. This is its Plone Integration package.

collective.linguatags

Multilingual Tags for Plone.

plone.app.multilingualindexes

Indexes optimized to query multilingual content made with plone.app.multilingual.

cs.adminlanguage

Configure a language to be used when editing your Plone site, independent to the site language.

collective.multilingual

This add-on provides support for content in multiple languages (multilingual).

collective.autoscaling

Automatic scaling of large images. Useful to reduce your database size when editors upload too large images.

collective.behavior.banner

A behavior to create banners and sliders from banners.

collective.behavior.relatedmedia

A behavior to create/upload/manage media relations (Image, File) for content types.

collective.lazysizes

Integration of lazysizes, a lightweight lazy loader, into Plone.

collective.wavesurfer

Implementation of https://wavesurfer.xyz/ audio player for Plone.

plone.app.imagecropping

Crops Images in Plone manually using cropper JS library.

plone.gallery

Photo gallery view for Plone.

redturtle.gallery

Adds a gallery view with a carousel made with slick.

wildcard.media

Provides audio and video content types and behaviors.

cs_flickrgallery

Flickr photo gallery support for Plone.

collective.explicitacquisition

Disallow access to acquired content outside the current path.

collective.geotransform

Graceful E-mail Obfuscation for Plone.

collective.contactformprotection

Disables the default contact-info form or protect it with plone.formwidget.[h|re]captcha.

collective.lockdown

Protect Plone sites against site administrators from reconfiguring the site or making layout changes.

bda.plone.gtm

Google Tag Manager Integration.

collective.behavior.seo

Adds extra fields used for SEO optimisation.

collective.splitsitemap

Provides a cached split sitemap on big public sites.

kitconcept.seo

Adds extra fields used for SEO optimisation for sites using Volto.

pas.plugins.ldap

Provides users and groups from a LDAP directory.

pas.plugins.authomatic

Authomatic OAuth1/OAuth2/OpenID Login Integration with Plone.

pas.plugins.eea

Provides user and group enumeration on top of pas.plugins.authomatic, with support for Microsoft Entra ID. Includes user and group synchronization.

iw.rejectanonymous

Reject unconditionnally anonymous users from a Plone site, without any change in your security policy matrix or workflows. The basic use case is an extranet, where all visitors must be authenticated.

pas.plugins.headers

Reads request headers and uses them for authentication. Think SAML headers that are set by a front web server like Apache or nginx.

dm.zope.saml2

Supports SAML2 based Single Sign-On.

collective.impersonate

Allow administrators to impersonate another user. Useful for verifying workflow/permission set up on real content.

collective.pwexpiry

Provideds methods for stronger user passwords in Plone and password attack protection.

pas.plugins.oidc

Login using OIDC providers.

wcs.samlauth

Login using SAML providers.

bda.plone.productshop

Flexible and modular e-commerce solution for Plone.

collective.exportimport

Export and import content and a lot of other data from and to Plone. The main solution for all kinds of migrations based on plone.restapi.

collective.migrationhelpers

Helpers and examples to use during migrations.

collective.jsonify

Export Plone content to JSON.

collective.transmogrifier

A configurable pipeline, aimed at transforming content for import and export.

plonetheme.tokyo

A alternative theme for Plone using Bootstrap 5.

plonetheme.grueezibuesi

A kitten inspired theme for Plone 6.

collective.sidebar

A sidebar that consolidates toolbar and navigation.

collective.editablemenu

A customizable navigation menu for Plone.

collective.localstyles

Add local styles within any subsection of a Plone site by adding a css-file.

Products.PDBDebugMode

Post-mortem debugging: open a pdb session whenever an exception occurs so you you can find out what is going wrong. Plus: By adding /pdb to a url you end up you in a pdb session on the current context. A killer tool for developers.

plone.app.debugtoolbar

A toolbar that shows a wealth of debug information about a running Plone site and the content you are inspecting. Also includes a interactive python-shell, a TALES-expression evaluator and and code-reload.

plone.reload

Code and configuration reload without server restarts.

Products.PrintingMailHost

Log mail messages instead of sending mail.

experimental.gracefulblobmissing

Gracefully handle missing binary files in Plone.

collective.debugtools

Add remote debugging via debugpy for debugpy-compatible clients like VSCode or PyCharm.

collective.icecream

Debug and inspect Plone using the icecream package.

collective.patchwatcher

A companion for keeping track of patched or overridden files.

collective.pdbpp

Allows you to use the pdbpp package.

collective.relationhelpers

Helpers to manage, create, export and rebuild relations in Plone 5.x. For Plone 6 this was merged into Plone core.

collective.catalogcleanup

Removes data from the catalog that no longer belong to an actual object.

collective.fingerpointing

Keeps track of different events and write them down to an audit log.

collective.ftw.upgrade

Simplifies writing and running upgrade steps for Plone add-ons and projects.

collective.ifttt

Enables any Plone site to play in the IFTTT ecosystem. For example when a news item is published, then tweet about it or post it on Facebook.

collective.purgebyid

Use tag-based cache invalidation in Plone (e.g. with Varnish's xkey module).

collective.recipe.backup

Powerful and flexible backup/restore solution for Plone.

collective.regenv

Override registry settings using environment variables stored in a file.

plone-registryfromenviron

Override plone.registry settings from environment variables.

collective.revisionmanager

Manage Products.CMFEditions histories that can bloat your database.

collective.sentry

Sentry integration to aggregate errors and help finding their causes.

dm.historical

Access any historical state of your database. Can be useful to find out what happened to objects in the past and to restore accidentally deleted or modified objects.

haufe.requestmonitoring

Detailed request logging functionality on top of the publication events. Useful to find out what takes longer than it should.

Cloudbrine

A set of add-ons that replace the ZODB and the catalog with PostgreSQL and stores objects as queryable JSONB and can delegate image scaling to Thumbor.

plone.org

Official website for developers and community.

community.plone.org

Official community forum, the best place to get help.

Discord chat

Discord is the best way to chat with members of the Plone community.

Plone support

Where to find help.

docs.plone.org

Official documentation for developers/integrators.

Plone 6 Documentation

Official documentation for the upcoming Plone 6 (work on progress).

training.plone.org

Training classes for developers/integrators/users/designers.

plone.api

Documentation for plone.api.