International Journal of Computer Applications (0975 – 8887) Volume 125 – No.11, September 2015 16 A Review on Plagiarism Detection Tools Ramesh R. Naik Ph.D. Student Dept. of CS & IT Dr. B.A.M.U.,Aurangabad Maheshkumar B. Landge Ph.D. Student Dept. of CS & IT Dr. B.A.M.U.,Aurangabad C. Namrata Mahender Assistant Professor Dept. of CS & IT Dr. B.A.M.U.,Aurangabad ABSTRACT Plagiarism has become an increasingly serious problem in the academic world. It is aggravated by the easy access to and the ease of cutting and pasting from a wide range of materials available on the internet. It constitutes academic theft - the offender has 'stolen' the work of others and presented the stolen work as if it were his or her own. It goes to the integrity and honesty of a person. It stifles creativity and originality, and defeats the purpose of education The plagiarism is a widespread and growing problem in the academic process. The traditional manual detection of plagiarism by human is difficult, not accurate, and time consuming process as it is difficult for any person to verify with the existing data. The main purpose of this paper is to present existing tools about in regards with plagiarism detection. Plagiarism detection tools are useful to the academic community to detect plagiarism of others and avoid such unlawful activity. This paper describes some of the plagiarism detection tools available for plagiarism checking and types of plagiarism. Keywords Plagiarism detection, types of plagiarism, plagiarism tools, plagiarism detection methods. 1. INTRODUCTION Now a day’s theft of information as widely increased in the form of computer data. This also comes in the academic or education era this parts known as plagiarism which is specifically defined as a form of research misconduct, “Misconduct means construction, distortion, copy or any other practice that seriously deviates from practices commonly accepted in the discipline or in the educational and research communities generally in proposing, performing, reviewing, or reporting research and inventive activities”. Plagiarism is the act of stealing someone else's work and attempting to "pass it off" as your own. This can apply to all the terms like papers, photographs, songs, even ideas, thoughts etc... According to the Merriam-Webster Online Dictionary, to "plagiarize" means to steal and pass off the ideas or words of another person as created by own self.  To use (another's creation) without crediting the source.  To commit literary theft.  From an existing source deriving an idea or product and present it as new [1]. Types of Plagiarism There are different types of plagiarism shows in below figure1. Figure 1: Types of plagiarism 1.1 Copy & Paste This is more or less the only kind of plagiarism that is quickly recognizable and generally granted on to be plagiarism. The plagiarist finds a useful source and copies a portion of that, perhaps with a few minor changes, into the text that is to be changing the name of the author [2]. 1.2 Disguised Plagiarism Disguised plagiarism when text from a source is copied and then some effort is exerted in order to disguise the copy. Words may be removed or added, word order is changed, or even an attempt at paraphrase may be undertaken. However, source is not given, or only given for a part of the text taken, this is still considered to be plagiarism [3]. 1.3 Plagiarism by Translation When a text is taken from one language and translated, either manually or with the help of an automatic translation system, and used without the source being named, then we speak of plagiarism by translation [2]. 1.4 Shake & Paste Among students a variation of copy & paste can often be seen whereby paragraphs are taken from a number of different sources and collected, often without a functional order. Each paragraph will be well written in and of itself, but there is no clear change from one paragraph to the next. When this is done on the level of snippets, that is parts of sentences Types of Plagiarism Co py and Pas te Disg uise d Plagi aris m Plagi arism by Trans lation Sha ke & Pas te Stru ctura l Plag iaris m Mosaic Plagiari Metapho r Plagiaris m Idea Plagiari sm