Blahtex 0.4.1 has been released; now it can get PNGs lining up
vertically with the surrounding text (a la PlanetMath, but with a
different strategy). No new bug fixes though.
Source, demo, manual, etc available at
http://www.blahtex.org/.
Jitse's test wiki (
http://wiki.blahtex.org/) doesn't include the
vertical alignment functionality for the moment.
David Harvey