DialogsPaths - this addon draws lines from particles depending on set conditions, so any player can see the path to the needed point. For example, it can help new players and they will know where to go.
DialogsYaml - this addon allows you to configure dialogs, quests, and NPCs using YAML instead of JSON.
QuestsNotifier - if this addon is installed, any player will be notified if he completed a quest.
DialogsAddonsManager - using this addon you can disable and enable any other addon.
DialogsConditions - this addon shows how to create your own conditions using API.
It is recommended to install addons not in folder /plugins, but in /plugins/DialogsM/addons.