You do not need an S3 account or Java tooling to get Common Crawl data. Take any file path from the crawl listing and prefix it with https://data.commoncrawl.org/ to download over plain HTTP. If you prefer S3, use anonymous credentials - the bucket is public. Get the file listing from warc.paths.gz (or the WET/WAT equivalents) for the crawl you want.

Context: Stack Overflow 16649535 (accepted answer, 15 votes): asked how to browse and download Common Crawl data without an S3 account. The accepted answer: the corpus has always been free, and you can skip S3 entirely.