> ## Documentation Index > Fetch the complete documentation index at: https://cometchat-22654f5b-docs-llms-scoped-indexes.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Core Features > Review CometChat Flutter UI Kit core features for messaging, media sharing, receipts, presence, reactions, threads, and calls. | Field | Value | | - | - | | Package | `cometchat_chat_uikit` | | Import | `import 'package:cometchat_chat_uikit/cometchat_chat_uikit.dart';` | | Purpose | Review CometChat Flutter UI Kit core features for messaging, media sharing, receipts, presence, reactions, threads, and calls. | | Key classes | `CometChatMessagePreview` | | Related | [Overview](/ui-kit/flutter/components-overview) · [Methods](/ui-kit/flutter/methods) | ## Overview The UI Kit comprises a variety of widgets, each designed to work seamlessly with one another to deliver a comprehensive and intuitive chat experience. Here's how different UI Kit widgets work together to achieve CometChat's Core features: ## Instant Messaging At the heart of CometChat's functionality is the ability to support real-time text messaging. Users can send and receive instant messages, fostering quick and efficient communication. | Widgets | Functionality | | - | - | | MessageComposer | Enables users to write and send a variety of messages. In V6, powered by `MessageComposerBloc` with rich text formatting support. | | MessageList | Renders a list of messages sent and received using TextBubble. In V6, powered by `MessageListBloc` with `diffutil_dart` for efficient updates. | ## Media Sharing Beyond text, CometChat allows users to share various media types within their conversations — images, videos, audio files, and documents. | Widgets | Functionality | | - | - | | MessageComposer | Has ActionSheet for sharing media files. V6 adds inline audio recorder and multi-attachment support (in progress). | | MessageList | Renders different Media Message bubbles like Image Bubble, File Bubble, Audio Bubble, Video Bubble. | ## Read Receipts CometChat's Read Receipts feature provides visibility into the message status, letting users know when a message has been delivered and read. | Widgets | Functionality | | - | - | | Conversations | Displays the delivery status of the last message. | | MessageList | Read receipt status is an integral part of all message bubbles. | | MessageInformation | Provides transparency into the status of each sent message. | ## Mark As Unread Mark as Unread feature allows users to manually mark messages as unread, helping them keep track of important conversations they want to revisit later. | Widgets | Functionality | | - | - | | Message List | Provides the "Mark as unread" option in message actions and supports starting from the first unread message. | | Conversations | Reflects the updated unread count in real-time. | ## Typing Indicator The Typing Indicator feature shows when a user is typing a response in real-time. | Widgets | Functionality | | - | - | | Conversations | Shows real-time typing status indicators in conversation items. | | Message Header | Dynamically updates to display a 'typing…' status in real-time. | ## User Presence CometChat's User Presence feature allows users to see whether their contacts are online or offline. | Widgets | Functionality | | - | - | | Conversations | Shows user presence information in conversation items. | | Message Header | Handles user Presence information in the toolbar. | | Users | Renders users Presence information in the user list. | | Group Members | Handles user Presence information in the member list. | ## Reactions CometChat's Reactions feature allows users to react to messages with emojis. | Widgets | Functionality | | - | - | | MessageList | Reactions are an integral part of all message bubbles. Width-aware display shows visible reactions + "+N" overflow indicator. | ## Mentions Mentions enhances interactivity by allowing users to directly address specific individuals in a conversation. Supports `@all` for group mentions. | Widgets | Functionality | | - | - | | Conversations | Shows where users have been specifically mentioned. | | MessageComposer | Allows users to use the Mentions feature for direct addressing. | | MessageList | Supports the rendering of Mentions in messages. | ## Quoted Reply Quoted Reply enables users to quickly reply to specific messages by selecting the "Reply" option from a message's action menu. | Widgets | Functionality | | - | - | | MessageList | Supports replying to messages via the "Reply" option. | | MessageComposer | Shows the quoted reply above the input field using `CometChatMessagePreview` (renamed from `CometChatEditPreview` in V5). | ## Threaded Conversations The Threaded Conversations feature enables users to respond directly to a specific message in a chat. | Widgets | Functionality | | - | - | | Threaded Messages | Displays all replies made to a particular message. In V6, powered by `ThreadedHeaderBloc`. | ## Conversation and Advanced Search Enables users to quickly find conversations, messages, and media across chats in real time. | Widgets | Functionality | | - | - | | Search | Allows users to search across conversations and messages. In V6, powered by a single consolidated `SearchBloc`. | | Message Header | Shows the search button in the chat header. | | MessageList | Shows the selected message when clicked from search results. | ## Moderation CometChat's Message Moderation feature helps maintain a safe and respectful chat environment by automatically filtering and managing inappropriate content. | Widgets | Functionality | | - | - | | Message List | Automatically handles moderated messages, displaying blocked content appropriately. | ## Report Message The Report Message feature allows users to report inappropriate or harmful messages within the chat. | Widgets | Functionality | | - | - | | MessageList | Provides the "Report Message" option in the message actions menu. | ## Group Chat CometChat facilitates Group Chats, allowing users to have conversations with multiple participants simultaneously. For a comprehensive guide on implementing Groups, refer to our detailed [Groups guide](/ui-kit/flutter/guide-group-chat). This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.