Live product
Gravity English
A live multi-tenant English-learning product with server-defined courses, organization-specific delivery, and asynchronous curriculum generation.
- SvelteKit
- Svelte 5
- TypeScript
- Node.js
- PostgreSQL
- Drizzle ORM
- Clerk
- AWS S3
Slashand LLC · Software product company
Products with an engineering record.
Slashand LLC builds and operates software products, maintains public TypeScript infrastructure, and documents the engineering decisions behind both.
Operating record Current
- Product
- Gravity English · Live
- Open source
- SDUI Blade · Four MIT packages
- Delivery
- Architecture through deployment
Product systems
Built as operating software—not portfolio simulations.
Current products are presented according to their real public status. Live systems link to their product surfaces; private development remains private.
Review the complete product indexActive development · Private
Coverlay Studio
An actively developed browser-based editor for reversible timeline operations, media composition, overlays, and AI-assisted production workflows.
- React
- Next.js
- TypeScript
- Zustand
- Zundo
- Express
- PostgreSQL
- Drizzle ORM
- Clerk
Public engineering infrastructure
One typed protocol. Three framework-native adapters.
SDUI Blade is a public TypeScript architecture with a framework-independent core and native Angular, React, and Svelte adapters.
Explore the SDUI Blade ecosystemFour independently versioned MIT packages
Company
One company. Focused product systems.
Slashand LLC is a founder-led software company building proprietary products and maintaining public engineering infrastructure.
Thomas Cayne brings more than 36 years of software engineering experience to product architecture, implementation, testing, deployment, and technical review.
About Slashand LLC Review founder engineering evidenceStart a conversation
Bring context. We will take it from there.
Use the company contact route for product, engineering, open-source, or business inquiries.