Hi, This one is also good for Duplicate Content checking http://www.webconfs.com/similar-page-checker.php
copyscape is very reliable, not sure why you have described reservation about it... I use it most of the time, and preferred method, apart from Google / Yahoo search with sentences that I pick up at random! Thx
tried out "article checker" at http://articlechecker.com it shows some phrases have 2 duplicates some 4 and some 8. What is the the number that google considers duplicate coz many phrases match just by co incidence? anybody knows about this please help me out. i just lost my first page ranking at google might be due to some duplicate issues. thanx for reading everyone
Copyscape is perfectly alright, they have paid version too. Other tools advised above are also good. You can also google one or more paragraphs of the questionable content. accurancy-> accuracy
Copyscape is the best for checking duplicate contents. Other alternatives that you can use are : http://www.plagiarismdetect.com/ http://www.dupefreepro.com/