ComCom's mains decisions
The decisions are only available in the official language in which they were taken, most of them in German.
Some decisions that were published on the website of the Federal Chancellery (Jurisprudence des autorités administratives de la Confédération) have been archived and are now available on the Swiss Federal Archives website.
If a complaint against a decision of ComCom has been filed with the Federal Administrative Court (FAC), you may find the sentence of the Court in its judgments database (searching with the keyword "ComCom").