FX Box Photoshop (Legacy Version)
The FX Box was a free Photoshop extension created by The Orange Box that allowed users to load and run various FX tools inside a single panel.
Adobe has since discontinued support for CEP/ZXP extensions, which means the FX Box is no longer officially supported and does not work in current Photoshop versions.
All FX tools that were originally built for FX Box — both free and paid — have now been fully migrated to modern UXP plugin formats (.ccx). These updated versions are available directly from the individual plugin authors and work on all current Photoshop releases.
If you still need the last legacy version (FX Box v1.3) for older Photoshop builds (CC 2015–2020), you can download it here:

Migrated Free FX Tools
All free FX tools from the old FX Box system are now available as standalone UXP plugins:
Free Plugins
Migrated Premium FX Tools
FX Box is preserved here only for historical and compatibility purposes (How to install Free FX BOX).
For all modern workflows, please use the updated UXP plugin versions.
Read the blog post