http://shootnscore.it (SSI) is a free web based PPC (and IPSC, USPSA, Steel Challenge) match arrangment service.
You simply create a new PPC match and choose what matches that it shall include, you can then link to a 'registration form' and have competitor register them selves. SSI allows you to assign shooters to squads, handle payments etc.
When you shoot the competiton you can print out pre-defined scorecards for all competitors (pdf files that are generate by SSI) and you can then enter the individual score for each shooter in the match and SSI will generate the results in all matches.
When done you can generate various forms of reports (in pdf, csv or xls format) and much much more.
Any feedback and input on how to improve SSI is always acted upon.