Open System Architect

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Open System Architect

Open System Architect (OSA) is an application used for modelling a system. OSA currently supports data modelling (physical and logical) with UML in the works. The unique thing about OSA is that it is an Open Source product licensed under the General Public License (GPL). The free factor makes OSA particularly interesting for students but OSA is powerful enough to compare favourably with products costing thousands of dollars.

OSA is sponsored by CodeByDesign (the original developer of OSA) and by Source Forge (they host the community collaboration environment for OSA).

  • ERD (Logical & Physical)
  • ERD supports inheritance
  • ERD validation
  • UML in the works
  • SQL editor
  • workspace/project environment
  • cross-platform
  • cross-database
  • open source/open standards
  • GPL (free)
  • ... and much more


Want to get involved in a powerful and successful open source project? This is it! Development, documentation, artwork, and bug reports are all needed. Consider contributing by going to the OSA source forge site and using the, fun, community based collaboration environment. If you just want to make a suggestion you are in luck - we want to hear it. Please send suggestions to Peter Harvey.