fbmsgr 
This is a wrapper around Facebook Messenger's internal AJAX protocol. This wrapper could be used for any number of cool things, such as:
- Tracking your friends' Messenger activity.
- Analyzing your conversations (e.g. keywords analysis)
- Automating "Away" messages
- Creating chat bots
Current status
Currently, the API is fairly reliable and can perform a bunch of basic functionalities. Here is a list of supported features (it may lag slightly behind the master branch):
- Send textual messages to people or groups
- Send attachments to people or groups
- Receive messages with or without attachments
- Send read receipts
- Receive events for incoming messages
- Receive events for friend "Last Active" updates
- Set chat text colors (to arbitrary RGB colors)
- List a user's threads.
- List messages in a thread.
- Send and receive typing events
- Delete messages
TODO
- Support emojis in threads (i.e. the like button)
- In FullActionLog, remove all duplicates, incase two messages have the same timestamp.
- Emoji/sticker transmission
- Modifying chat preferences (emoji, nicknames, etc.)
- View pending message requests
- Create new group chats
License
This is under a BSD 2-clause license. See LICENSE.