In reviewing: to get started checking out the Weld source, it took me several scans of the page to find this link:

Weld, the JSR-299 RI (Reference Implementation) and the JSR-299 TCK (Technology Compatibility Kit) are being [[[[developed here]]]] at Both are licensed under the Apache License, Version 2.0.

I'd like to recommend making a "Get Involved" section more visible, since right now, that one tiny link is the only I could find.

Lincoln Baxter, III
"Keep it Simple"