- JavaScript.
- React / Redux.
- Firebase.
- Semantic UI.
- HTML / CSS.
- Signing up / Logging in.
- Changing an avatar.
- Creating a channel.
- Sending text messages.
- Picking emojis.
- Uploading media files.
- Searching messages.
- Starring to favorite / unfavorite channels.
- Displaying progress bar.
- Skeleton loading.