# Overview
OpenD, which can be runned on your local computer or cloud server, is the gateway program of Futu API. It is responsible for transferring protocol requests to Futu servers and returning the processed data. It is a necessary prerequisite for running Futu API programs.
OpenD can be runned under 4 operating systems: Windows, MacOS, CentOS and Ubuntu.
You need to log in to OpenD with your Futu ID (Futubull ID) and login password.
After a successful login into OpenD, the socket service is started for Futu API to connect and communicate.
# Running Mode
There are 2 modes to run OpenD, you can choose 1 of them below:
- Visualisation OpenD: Provide interface applications, easy to operate, especially suitable for beginners. Please refer to Visualization OpenD for installation and operation.
- Command Line OpenD: Provide command line execution program, which needs to be configured by yourself, which is suitable for users who are familiar with the command line or running on the server for a long time. Please refer to Command Line OpenD for installation and operation.
# Operation While Running
While OpenD is running, you can view user quota, quote right, connection status, delay statistics, and operate closing API connection, re-login, logging out etc. with Operation Command.
For more information, please see the following table:
| Method | Visualisation OpenD | Command Line OpenD |
|---|---|---|
| Direct Method | through the UI interface | Send Operation Command through command line |
| Indirect Medhod | Send Operation Command through Telnet | Send Operation Command through Telnet |