Who We Are
Zero Development is a small studio that builds software you run on your own server. We sell on BuiltByBit and support everything we sell from our Discord server.
We build for people who would rather own their tools than rent them. Nothing we make phones home for features, nothing sits behind a monthly plan, and your data stays in your own database or your own files.
What We Make
Our products fall into four groups.
Discord Bots
Medusa is a Discord bot with a web dashboard. It ships with 26 modules, such as moderation, tickets, leveling, giveaways and music, and you set all of it up from the browser. It runs in 16 languages and can run several bots from one install. Read more in What is Medusa?.
Licensing
Kora is a license server. It issues keys for the things you sell, answers validation requests from your products and gives you a dashboard for products, customers and keys. It can also turn BuiltByBit purchases into licenses on its own. Read more in What is Kora?.
Websites
Retrail is a one-page portfolio and Vail is a status page. Both are set up from one settings.json file, with no database and no admin panel. See What is Retrail? and What is Vail?.
AthenaBot Plugins
If you already run AthenaBot, we sell four plugins for it: Product Panel, Store, Advanced Automod and Emoji Locker. See Our AthenaBot Plugins.
How It Works
Every product follows the same three steps:
- Buy and download. Get the files from the product's BuiltByBit page.
- Get your license. Join the Discord server and claim your license key.
- Set it up. Follow the product's setup guide in the docs.
Updates are posted on BuiltByBit. Medusa and Kora can also update themselves from their dashboards.
Support
Support happens in our Discord server. Open a ticket there with your question and what you have tried, and we will help you get running.
Most answers are already in the documentation. Each product has a setup guide, a configuration reference and, where it applies, developer docs for writing your own modules.
Commissions
We used to take custom work through this site. Commissions are moving to the BuiltByBit commission system. Until then, ask in Discord.


