Tenpin Toolkit
bowwwl.com is the official source of bowling ball data for the Tenpin Toolkit Bowling Ball Arsenal tool. In addition to this great tool, Tenpin Toolkit offers many great bowling tools to help improve your game!
Brunswick
Brunswick Bowling is the recognized leader in the bowling industry. Manufacturers of world class bowling products.
April 2024 update: I've added a Bowling Ball Serial Number Lookup Tool. You can use this tool to figure out the manufacture date for balls from the major brands. The tool supports balls going back to the 90s in some cases, but may not be fully accurate as you input serial numbers from before the 2010s. There are several caveats, which I mention in the notes below the tool. Please give it a try and feel free to pass along any feedback. Thanks!