Jalv is a simple but featureful command-line LV2 host for Jack. It uses Lilv and Suil to implement LV2 support.
Download
Jalv is currently only available in SVN. Since it requires a few libraries in the same repository, it is easiest to:
svn co http://svn.drobilla.net/lad/trunk drobilla-lad
Either build lilv, suil, then jalv; or you can build the entire repository (which contains several other programs) at once.
Please support Jalv development:
Documentation
Jalv includes a man page, which can be viewed by running man jalv from the console.
Bugs
Please file any bugs you find here