getfirebug.com has Firebug 2.0 alpha 1 Firebug 2.0a1 fixes 172 issuesFirebug 2.0a1 is compatible with Firefox 30-31 Update: an issue with Firefox 30 compatibility fixed This alpha represents the first public release that is based on new Firefox debugging engine (also known as JSD2).
yEd is a powerful desktop application that can be used to quickly and effectively generate high-quality diagrams. Create diagrams manually, or import your external data for analysis. Our automatic layout algorithms arrange even large data sets with just the press of a button. yEd is freely available and runs on all major platforms: Windows, Unix/Linux, and Mac OS X. The latest release is version 3.12.2 Key Features