helgeho/Web2Warc
Web2Warc - your custom Web crawler
An easy-to-use and highly customizable crawler that enables you to create your own little Web archives (WARC/CDX).

Setup
(if you want to use Web2Warc as a library in your own project, please read here)

To use Web2Warc you need to have Scala as well as SBT. Both are free and quickly installed.