Affirmative | Rickard Andersson


Affirmative is a fast SFV file verifier. It calculates the CRC32 checksum of files listed in an SFV file and compares the result with what’s stored in the SFV file. When downloading stuff from the Internet, the archives will frequently contain a .sfv file. Just run this file through Affirmative and it will alert you if any of the files are corrupt or missing.

Affirmative is free and runs on MacOS X Leopard and later, on both Intel and PowerPC platforms.

Download Affirmative 1.0

Affirmative in action


  1. Thomas
    Posted September 24, 2009 at 20:14 | Permalink

    Don’t seem to work on Leopard :(
    “Den här versionen av programmet Affirmative kan inte användas med den här versionen av Mac OS X.”

  2. Posted September 24, 2009 at 21:12 | Permalink

    My mistake. Download it again and it should work.

  3. Posted September 30, 2009 at 14:18 | Permalink

    Fan på tiden att det hände något på din blog. Min RSS läsare fick hjärtattack när den märkte att det kom något från dig ;)

  4. Posted September 30, 2009 at 18:16 | Permalink

    Jonathan: Huh? Jag tycker jag postat relativt ofta. 4 inlägg i september är fan inte så illa :)

  5. user
    Posted December 23, 2009 at 11:31 | Permalink

    Great Job,

    Working on i7 iMac SL, only 2 things when I close the application “suddenly close” error appears. Is there any way to put MD5 and SH1 support?


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