Platform: Mac OS X (other platforms)
Version: Alpha 1.2.1
Release date: July 13, 2016


This alpha version is deprecated - It is no longer able to validate FSDL documents based on FSDL 3.0 - find the latest macOS version

This version of Frogans Player for Developers embeds version 1.2.1 of the FSDL Software Library (alpha).

Note: Frogans Player for Developers (alpha) is a preliminary version provided on an "as is" basis. The OP3FT cannot guarantee that the rendering performed by this alpha version will be compatible down to the last pixel with the rendering performed by the release version of Frogans Player.

To be informed of the distribution of versions of Frogans Player, subscribe free of charge to the Announcement read-only mailing list.

Intended audience

Frogans Player for Developers (alpha) is intended for developers wishing to contribute to the development of the FSDL language and Frogans Player by creating and testing their first Frogans sites using FSDL 3.0.

This Frogans Player version is not intended for the general public.

Any contribution to the development of the Frogans technology, in any form, is considered as acceptance of the Frogans Technology Development Contributor Policy and the commitments it contains, without restriction or reserve.

Feedback sought

This alpha version represents an opportunity for developers to participate in the development of the Frogans technology.

To post questions or suggestions, or to report errors relating to the FSDL language or to this Frogans Player version, subscribe free of charge to the Early-questions mailing list. Please prefix the subject of any posts you make to this list concerning FSDL 3.0 with "[FSDL]" and prefix the subject of any posts concerning Frogans Player for Developers with "[FP-Dev]".

The OP3FT is looking for feedback from the developer community in two key areas:

Your feedback can concern either a given platform (Windows, MacOS X, or Linux) or all platforms.


Operating System versions currently supported:

Hardware resources:

Release information

This version allows you to create and test Frogans sites whose Frogans slides are hosted either locally on your system or remotely on a server on the Internet (using the UCSR network 'IP_DNS_TCP_HTTP').

To create and test your Frogans sites, you need to configure test Frogans addresses, i.e. Frogans addresses starting with test*, via the configuration-for-testing.xml file in the Frogans Player directory. This configuration file is local to your system.

This version can also resolve Frogans addresses of public Frogans networks, i.e. Frogans addresses starting with frogans* (or a transcription of the name 'frogans' followed by an asterisk, such as 福更斯* or ФРОГАНС*) so that you can publish your Frogans sites on the Internet and make them available to others using your Frogans addresses (more information).

Note: The UCSR network 'IP_DNS_TCP_HTTP' is currently used by Frogans Player to communicate with FNS servers (i.e. servers resolving Frogans addresses) and with servers hosting Frogans sites. For the moment, this UCSR network only supports direct connections to the Internet (no proxies) and non-persistent connections.

This version implements both the graphical and the dynamic elements of FSDL 3.0.

The following elements are available for testing: <frogans-fsdl>, <resimage>, <respixels>, <resdraw>, <respath>, <setfont>, <font>, <restext>, <text>, <setfilter>, <filter>, <setrelief>, <relief>, <setshadow>, <shadow>, <resmerge>, <merge>, <layer>, <file>, <button>, <next>, <redirect>, <setdata>, <data>, <session>, <setentry>, and <entry>.

This version does not manage all Frogans slide rendering constraints (intended to ensure useability for end-users), which are currently under discussion.

Change log:

Changes between 1.1.1 and 1.2.1:

Known issues (as of July 13, 2016):



To create and test your own Frogans sites using Frogans Player for Developers, follow these steps:

  1. Download and decompress the archive on your system. A Frogans Player directory is created with the name of the archive.
    Note: you should create this Frogans Player directory on the local drive of your system, and not on a networked drive; otherwise Frogans Player for Developers can be very slow at rendering Frogans slides.
  2. Open the Frogans Player directory and execute Frogans Player for Developers. A small, movable yellow circle representing Frogans Player is displayed in the center of the screen.
    Note: if Frogans Player for Developers does not start or launch correctly:
    • Mac OS X (version 10.7.5 and later): Check whether the Gatekeeper is causing the problem. Go to Apple menu > System Preferences… > Security & Privacy > General tab and verify the "Allow apps downloaded from" option. If the option equals "Anywhere", then the Gatekeeper is not causing the problem. If the option equals "Mac App Store", then you will need to change it to "Mac App Store and identified developers" in order to run the program.
    • Check whether your antivirus software is blocking the program or waiting for a confirmation.
    • If you have downloaded the archive in 7z format, check whether your archive extraction software is causing the problem. It has been reported under Mac OS X 10.8 that The Unarchiver version 1.6.1 does not correctly extract the archive in the 7z format. If you use this archive extraction software, either obtain the latest version, or download the archive in another format.
  3. Select "Open a Frogans site..." from the Frogans Player contextual menu and enter one of the following test Frogans addresses: test*helloworld or test*helloworld-live. The corresponding sample Frogans site appears, which you can move, resize, and navigate.
    You can use the following Frogans addresses of public Frogans networks to access other demonstration Frogans sites online (these Frogans sites are not intended to be fully functional):
  4. Use the Frogans site contextual menu to reload the current Frogans slide (i.e. page of the Frogans site) or close the Frogans site. In order to display the Frogans site in the 640x480 resolution of the rendering canvas, disable the scaling factor (option for developers only in the Frogans site contextual menu).
  5. Each Frogans site is made up of one or more Frogans slides. The Frogans slides of a Frogans site (i.e. the FSDL documents and their auxiliary files) are stored in a specific directory called the Frogans site root directory. In this version of Frogans Player for Developers, Frogans site root directories can be located either locally on your system, or remotely on an HTTP server on the Internet.
    For example, the Frogans site root directory of the sample Frogans site corresponding to the test Frogans address test*helloworld is located locally in the "helloworld" subdirectory of the "test" directory of the Frogans Player directory. The Frogans site root directory of the sample Frogans site corresponding to the test Frogans address test*helloworld-live is located remotely on an HTTP server on the Internet.
  6. To create and test your own Frogans site with the test Frogans address test*sitename, edit the configuration-for-testing.xml file in the Frogans Player directory. This configuration file is used to configure test Frogans addresses for use with Frogans Player for Developers. The "sitename" of your test Frogans address can contain up to 28 ASCII characters in the range from 'a' to 'z', from '0' to '9' inclusive, and the '-' character (no spaces allowed). For further information, read the guidelines in the comments of the configuration file.
  7. You can create and test as many Frogans sites as you wish. The number of Frogans slides in a Frogans site is unlimited. The Frogans site root directory can contain subdirectories.
  8. To modify an FSDL document, edit the corresponding file in your favorite text editor that supports XML (and remember to reload the Frogans slide afterwards). We suggest that you use the .fsdl extension for the file names of your static FSDL documents.

Additional resources:

Publishing your first Frogans site:

Now that you have successfully created and tested your first Frogans site, you can publish it on the Internet and make it available to others using a Frogans address of a public Frogans network.

To register Frogans addresses, you can make use of the services of the FCR account administrator of your choice in order to manage the registration of your Frogans addresses in the FCR (list here). Or, given your technical skills as a developer, you can become an FCR account administrator yourself.

Frogans Player for Developers [noinstall]
Version: alpha1.2.1-mac32

Copyright ©1999-2016 OP3FT
All rights reserved

Frogans Player for Developers (the "Software") is developed by and belongs to the OP3FT.

The Software must be used in compliance with the Frogans Technology User Policy, accessible at the following permanent URL:

By downloading and using the Software, you agree to and undertake to be bound by the version in force of the Frogans Technology User Policy.

Sample Frogans sites included in the "test" directory located in the Frogans Player directory are provided by the OP3FT to help you create your own Frogans sites. You are free to use, copy, distribute, modify, adapt, or share these sample Frogans sites.

The Software uses third-party source materials which are credited in the "COPYRIGHT-AND-LICENSE" directory available in the archive to be downloaded (see download).

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