[horde] Why are some Horde Applications unknown?

[director_de at yahoo.de]

Hello all,
I installed horde using pear.Unfortuenately using the test-page, some Applications are unknown.(many of the initially unknown are installable using e.g.pear install -a -B horde/anselhorde-db-migrate ansel)
How can these others being installed? (Especially the Kolab Application)?
# pear install -a -B horde/agoraNo releases available for package "pear.horde.org/agora"install failed
# pear install -a -B horde/kolabNo releases available for package "pear.horde.org/kolab"install failed

                                                               Horde Version
     * 5.2.21
                                                           Horde Applications
     * Agora [Forums]: unknown     * Ansel [Photos]: H5 (3.0.10) (run tests)     * Chora [Version Control]: unknown     * Content: 2.0.6     * Gollem [File Manager]: H5 (3.0.12) (run tests)     * Hermes [Time Tracking]: unknown     * Imp [Mail]: H5 (6.2.24) (run tests)     * Ingo [Filters]: H5 (3.2.16) (run tests)     * Jonah [News]: unknown     * Klutz [Comics]: unknown     * Kolab [Kolab]: unknown     * Kronolith [Calendar]: H5 (4.2.27) (run tests)     * Luxor [X-Ref]: unknown     * Mnemo [Notes]: H5 (4.2.14)     * Nag [Tasks]: H5 (4.2.19)     * Passwd [Password]: H5 (5.0.7) (run tests)     * Sam [Spam]: unknown     * Sesha [Inventory]: H5 (1.0.0RC3)     * Timeobjects: 2.1.4     * Trean [Bookmarks]: H5 (1.1.9)     * Turba [Address Book]: H5 (4.2.25) (run tests)     * Ulaform [Forms]: unknown     * Vilma [Mail Admin]: unknown     * Whups [Tickets]: H5 (3.0.12)     * Wicked [Wiki]: H5 (2.0.8) (run tests)

Thanks for your help in advance!