How to secure languages ​​and applications?

Question

Copyright

The inventor developed original visual programming languages ​​based on web languages, and created an original visual development environment.
But all this works on the site for free.
That is, anyone can copy it and say that he came up with it.

Do I need to think about copyright protection and how to do it?

So far, the following has been done - articles about the development have been published, and a copy of the application has been published on the social network.
Attached is a copyright sign.

Answer 1

But it all works like a website, that is, it is free software.

- not everything is free that works as a site. Here's an example: UMI.CMS - also works as a website, but it's not free software.
If you have developed a fundamentally new programming language (for example, for your highly specialized piece of hardware, for example, for a nuclear rocket), place the compiler on your server, and let your online-ide look at the network. Users will write code on your site in a browser, and let them take the binaries for money, and you don’t need to protect anything.
Ahh, I just saw that you still have copyright in the tags:
Well, then it all depends on the inventor, if he wants - let him protect, if he wants - let him publish under a free license.

Answer 2

1. If he has developed - let him register.
2. Exposes info with signs of authorship.
3. Tracks, and if it finds illegal use - sues.
You just need to know with whom to sue later, not every lawyer in the topic of copyright.

Answer 3

Even if you don't put a copyright badge - but if you put up something unique - the copyright is yours. (But to not very literate people - which are the majority - the copyright icon may seem significant, so put it on, yes).
Another question is how much the protection of rights will cost in the event of an explicit direct or indirect copying.
Articles about the development and a copy of the application on the social network is the right step that does not require additional resources, they did everything right.
Other methods (code registration, etc.) and subsequent protection require significant additional funds and hiring (temporary and permanent) lawyers specializing in this area of ​​law, so it may be worth thinking more about your developments, and when finances are a river - hire an army of lawyers.
What you can at this stage - you have done.
Ideas, unfortunately, are not patented, only implementations.