Is there a Wordpress plugin for automatic reposting to VK, Facebook and other networks?

Question

Facebook

Is there a Wordpress plugin for automatic reposting to VK, Facebook and other networks?
It is necessary that there is a button for posting (or auto-posting when publishing material) on a wall or in a community.
If there are no such plugins, or they are crooked / paid - tell me how to write it? What type of application to use, what method to log in? Is such a scheme "legal" from the point of view of social. networks?

Answer 1

It is absolutely legal and the functionality for reposting posts to a social network is described in the help or development section for each specific social network. There are also solutions in the form of plugins like Social Share, etc. (the names are the same for all).
Of the automatic ones, there is one like this , for example.

Answer 2

I used the service megapost
megapo.st