01
OS
A browser workspace for personal and team productivity, in free open beta at secondbrains.xyz. Workspaces, kanban boards, a calendar and notes open as draggable windows in one tab, and ESP32-S3 desk devices are planned for Q4 2026.
Architecture and role
- Role
- Co-founding venture and lead system architect.
- Model
- A web workspace paired with companion desk hardware.
- Stack
- Bun runtime, Hono, SQLite, MQTT, Rust firmware on ESP32-S3.
02
A community and training school for Vietnamese virtual assistants who work with international clients. VAPro runs the Virtual Assistant Việt Nam community of more than 19,000 members, alongside VA courses, 1:1 coaching and an agency that matches VAs with overseas businesses. The platform launched in September 2026 with two active online courses.
Architecture and role
- Role
- Technical partner and platform architect.
- Suite
- An integrated ERP covering LMS, CRM, payments, the community platform and more.
- Launch
- September 2026, with two online courses running.
03
Sourcing.vn
A sourcing hub and agency for Vietnamese manufacturing. Buyers search verified factories on the hub or hand the work to the Sourcing.vn team for sourcing, factory audits, QC inspections, talent and project management.
Architecture and role
- Role
- Technical co-founding partner and platform architect.
- Scope
- Vietnam supply chain management, factory audits and talent matching.
- Stack
- Bun, Hono, HTMX, Node-RED, SQLite, Better Auth.
04
A bilingual legal-services app for foreign nationals, foreign investors and businesses in Vietnam. Instead of open-ended AI chat, clients follow guided pathways for visas and residence, representative offices and company formation, and licensed lawyers take the case from there.
Architecture and role
- Role
- Co-builder of the core tech platform and architecture.
- Model
- English by default with Vietnamese, and a licensed lawyer certifies each opinion.
- Stack
- Bun, Hono, SQLite, Bulma CSS, Alpine AJAX.
05
A map-first directory of Hội An, Vietnam, with Đà Nẵng planned for Q4 2026. Places are re-checked on foot, the map has a Lantern Mode night view and 3D shophouse blocks, and directions work around the Ancient Town's walking-street hours.
Architecture and role
- Role
- Co-founding venture and spatial engine developer.
- Moat
- Place data re-checked on foot, with the details tourists ask about.
- Stack
- Bun + Hono multi-host, MapLibre GL, Three.js 3D, SpatiaLite/sqlite-vec, Alpine.js.