GBBS Pro isn’t just another Bulletin Board System—it’s a cornerstone of the Apple II era. Released in 1985 by Greg Schaefer, GBBS Pro quickly became the go-to BBS software for sysops who wanted flexibility, creativity, and community. Its ACOS scripting language opened the door to a world of customization, from games and message boards to features that pushed the Apple II far beyond what most thought possible.

Today, with the blessing of Kevin Smallwood (the owner of GBBS Pro) and the support of Apple Pugetsound Program Library Exchange (A.P.P.L.E.), GBBS Pro has been released under the GNU General Public License (GPL 3.0). This means it’s finally available again to everyone—not locked away as a forgotten piece of software, but free to explore, enjoy, and learn from.

Why We’re Here

This site was built to celebrate GBBS Pro and keep its legacy alive. Here you’ll find:

• A clean, organized archive of GBBS Pro modules, doors, and modifications.
• Resources to help you understand and work with ACOS, the powerful language behind the system.
• Historical notes and context that show why GBBS Pro was so special in the first place.

The Spirit of Public Domain

Although GBBS Pro remains copyrighted by Kevin Smallwood, its release under GPL 3.0 puts it in the spirit of the public domain. It means the software can live on—not just as a piece of history, but as something people can study, experiment with, and even adapt for today’s retro-computing scene.

Looking Ahead

This isn’t just a museum shelf. We’re continuing to explore, document, and even modernize GBBS Pro so that anyone curious about BBSing can see what made it tick. Whether you ran a board back in the day, logged in as a user, or are discovering BBS culture for the first time, you’ll find plenty here to spark your interest.

We’re not a download dump or upload hub—you’ll find what’s already known and preserved, but not a free-for-all. Comments and stories, though, are welcome! The history of GBBS Pro is as much about the people who used it as the code that powered it.

GBBS Pro lives on—not just in memory, but as a chance to reconnect with the excitement of BBSing and the Apple II.