Open Smash Attacks, more commonly known as Open SA, is a Brawl moveset editor with the goal of serving as a side tool to BrawlBox by editing and representing files that BrawlBox cannot or can but poorly. Open SA is significantly more advanced than its predecessor, Project Smash Attacks; It can view the actions and hitboxes of most props and projectiles, open character files that PSA has trouble with, and work with files that house general actions for all playable characters. Open SA's main downfall is that it cannot edit files yet, and there are facets remaining that elude it, such as Pikmin hitboxes.
External Links
Open Smash Attacks Version 3 on Google Project Housing