Jam has launched a collection of open-source and ad-free data conversion tools, which were initially created by the company's engineers to solve their own problems. The tools are now available online, allowing developers to use them without ads or website clutter. The set includes various converters and utilities such as CSV to JSON, YAML to JSON, base64 encode/decode, URL encode/decode, timestamp to date, HEX to RGB, and more. Jam's DevUtils are built using NEXT.js, tailwind, and the open source UI library shadcn/ui, running on Cloudflare pages, with a total website size under 2MB. The company is committed to regularly adding new tools and invites developers to contribute their own, with pizza rewards for contributors.