As a lawyer by education first can't pass up.
Just a few words.
There is no guarantee that the translator will translate correctly.
All technical indicators for the Forex market can be divided into two large groups, the first group includes the long-known algorithms from statistics, and the second includes more indicators, the idea of which belongs to a particular people.
Before to give examples and something to advise, you should understand what is meant by authorship? Very often, programmers think that if they wrote any code, they now owns full rights to the use of the method, so it can be sold and demand from the rest of the resources removed from their libraries like tools.
In fact, the vast majority of cases, these claims are not just unfounded, and are in direct contradiction with the legislation in the field of copyright, as very often such methods are based on the work and research of others, and which belongs to the authorship.
Let's start with the fact that any indicator is a program and not some abstraction, even if it is elementary and weighs a few kilobytes in size, but it is code, and therefore is subject to the provisions of national laws and international conventions on copyright.
And now the fun part, according to the laws of the European Union, the program is copyrighted only if its creation is the result of intellectual work of the author. Some lawyers believe that up to the developer to come up with something original and then either independently or with the help of employees, to draw their ideas in more indicators.
As an example of violation of this provision can result in the sale of "unique" indicators based on the long-known formulas. For example, a common situation that someone is screwed to the standard signal indicator arrow (or an additional filter) and trying to protect their right, demanding of resources, put this invention in free access, delete your code.
There is no dispute, the author of the modification has the right to sell it, but to threaten a lawsuit on copyright infringement grounds it will not be enough, because, firstly, the stochastic oscillator has long been known and copies are included in any terminal, and, secondly, a cunning worker runs the risk to appear in court if his offspring will be like the indicator that you previously created by another programmer.
In General, the conclusion is disappointing - more than half of all existing indicators are plain rip-off, although sometimes more indicators are generated independently and randomly repeat each other (this is due to the fact that the developers start from the same assumptions). In this case, if we mention copyright, the author must go through the process of individualization, as in the patent for the invention.
Now, a sober reason, many sellers of indicators fulfil basic requirements of the legislation? Of course not, according to this principle are mostly Western companies, whose main profile is software development, but these developments are much more expensive.
Currently, the best sources of indicators are the trading forums topics, because users often spread long bought of development, and in the section of our portal "Forex Indicators" you can find a detailed description of the most interesting and modern algorithms, who are in free access. When writing reviews, we pay close attention to the health of the source code and enumerated in the articles of the main advantages and disadvantages of experts.
A special place among the entire set of algorithms is really free more indicators. In this case, the author himself creates the program, but does not require for its use of money and places open code freely available.
It is noteworthy that this development be the most effective, as they are constantly being improved and tested not one person but a team.
Summing up today's topic, we note that at the present time to develop something unique is becoming increasingly difficult, so most of the "new and lucrative" indicators are nothing but old content in new packaging.