PetaSpace
https://www.synology.com/th-th/knowledgebase/DSM/help/PetaSpace/PetaSpace_desc
PDF Viewer
https://www.synology.com/th-th/knowledgebase/DSM/help/PDFViewer/PDFViewer
OAuth Service
https://www.synology.com/th-th/knowledgebase/DSM/help/OAuthService/oauth_service_desc#application
Note Station
https://www.synology.com/th-th/knowledgebase/DSM/help/NoteStation/note_station_desc
Synology Moments
https://www.synology.com/th-th/knowledgebase/DSM/help/SynologyMoments/moments_desc
Migration Assistant
https://www.synology.com/th-th/knowledgebase/DSM/help/MigrationAssistant/migrationassistant
Media Server
https://www.synology.com/th-th/knowledgebase/DSM/help/MediaServer/application_mediaserver_desc
Log Center
https://www.synology.com/th-th/knowledgebase/DSM/help/LogCenter/logcenter_desc
iTunes Server
https://www.synology.com/th-th/knowledgebase/DSM/help/iTunesServer/application_itunes_desc
Hyper Backup
https://www.synology.com/th-th/knowledgebase/DSM/help/HyperBackup/BackupApp_desc