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Plone add-on to host add-ons / extensions of a software

Project description



  • A add-on center with listing and display of template projects respectively to their rating, a search form and a listing of the latest projects.
  • The add-on center edit form contains fields to set the title of the center and the name of the add-ons, add a description of the center, set a choice of categories, platforms, lizenses and versions of the product (for which the add-ons are used). There are also fields to set the allowed file extensions of the add-on files and the image files (e.g. screenshots, logos).
  • Inside the add-on center contributors could create add-on projects. The edit form of the project contains fields to choose the categories.
  • The contributor could add releases and linked releases to the add-on project.
  • The release contains fields to upload files.
  • The linked release provide fields for links to the release files.
  • Both, release and linked release, contains fields to choose the product version, platform and licenses.
  • The add-on send message once a new project was added. It push a message too, once a project was submitted for publication. It send an email to the project contact address for every change in the workflow status of the project.
  • The add-on informs the contributor via email about new releases or linked releases, once they were added to his project(s).
  • The user could send a message to the author of an add-on via a mail. The mail form uses a recaptcha widget. The contact data of the author of the aa-on will not be made public.
  • The file extensions of the uploaded add-ons will be checked. It is possible to set the allowed file extensions distinct for the specific use case of the add-on center. They could be dynamically changed at any time.
  • The add-on sends messages to the project contact email on every edit of the add-on center’s product versions field (thus the contributors could potentially add this new product version to their release / linked release).


This add-on can be seen in action at the following sites:


Full documentation for end users is available in the “docs” folder


This product has been translated into

  • German (Andreas Mantke)


Install collective.addons by adding it to your buildout:



eggs =

and then running bin/buildout


If you are having issues, please let us know. Please create an issue in the project issue tracker (see above).


The project is licensed under the GPLv2.



1.0 (2019-11-16)

  • Complete user documentation [Andreas Mantke]
  • Flake8 fixes [Andreas Mantke]
  • Add a custom.css for creating documentation in HTML file format [Andresa Mantke]

1.0b2 (2019-11-03)

  • Add user documentation [Andreas Mantke]
  • Add further directories to .gitignore [Andreas Mantke]

1.0b0 (2019-09-11)

  • Made additions to travis.yml to get the robot test running successfully [Andreas Mantke]
  • Update the Readme and add more features of the add-on [Andreas Mantke]
  • Change the name of the field for the add-on project contact address [Andreas Mantke]
  • Flake8 fixes [Andreas Mantke]

1.0a4 (2019-09-03)

  • Pep8 and other code fixes [Andreas Mantke]
  • Move from api.portal.get_tool to api.content.find for portal_catalog searches [Andreas Mantke]
  • Move from checkpermission to api.user.has_permission [Andreas Mantke]
  • Fix the message to sender in the mailtoauthor form [Andreas Mantke]
  • Add further dependencies to the install_requirements section of the script [Andreas Mantke]
  • Add include dependencies of the package to configure.zcml [Andreas Mantke]
  • Remove test for Plone 4.3 from travis.yml [Andreas Mantke]
  • Update localization files [Andreas Mantke]

1.0a3 (2019-08-23)

  • Pep8, isort and code-analysis fixes. [Andreas Mantke]

1.0b1 (2019-08-23)

  • Add notifications module [Andreas Mantke]
  • Fix css-class names in addonrelease and addonlinkedrelease view [Andreas Mantke]
  • Move a css inline style to the style sheet file [Andreas Mantke]
  • Pep8 fixes [Andreas Mantke]
  • Update localization template file and localization files, update German translation. [Andreas Mantke

1.0a2 (2019-08-16)

  • Fix regular expressions for file extension validation [Andreas Mantke]
  • Add import for Invalid to the addoncenter module [Andreas Mantke]
  • Add necessary imports for virus scanning with collective.clamaav [Andreas Mantke]
  • Fix title strings and field namings [Andreas Mantke]
  • Update localization template file and localization files and add the missing German localization strings [Andreas Mantke]

1.0a1 (2019-08-13)

  • Initial release. [andreasma]

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