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fenLisesi
[lucky://site:wikipedia.org software estimation|Estimation] should be independent of whether you will use Perl. See [wp://Function point analysis] and [http://www.cosmicon.com/|COSMIC], for example. For project management, we use [lucky://site:ibm.com Rational Portfolio Manager|Rational Portfolio Manager], RequisitePro, ClearCase and ClearQuest, but there are very good libre projects that do what some if not all of these do. I don't do contract work, so I can't give you an hourly wage feedback. The wages are likely to vary wildly from country to country. Cheers.
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