Diogel
Nostr signing and key-protection tools for safer identity workflows.
Nostrfi
Nostr relay, storage, and backend-service infrastructure for builders and operators.
Nostr Product Development
Focused engineering support for teams building Nostr-native products, tools, and protocol-aware user experiences.
Bitcoin Product Development
Specialist engineering for Bitcoin-native and Bitcoin-aligned products with stronger ownership, payments, and digital sovereignty models.
About
Learn more about Threenine, our direction, and why we build in this space.
Blog
Practical Bitcoin, Nostr, and product engineering guides.
