GitHubDev Utilities & Vibe-Coding Tooling · Local-first & sync
Managed and self-hostable Yjs sync server that persists documents to S3-compatible storage and scales sessions per document.
Why it’s a gem
Solves the Yjs persistence problem that stops most collaborative prototypes from shipping.
Library of composable CRDTs from CMU research letting you build custom collaborative data types instead of using a fixed document model.
Reactive in-memory data store with typed schemas, indexes, relationships, persistence adapters and optional CRDT-based synchronization.
Fine-grained reactive state library with automatic persistence and sync plugins, designed to re-render only the components that changed.
High-performance JSON CRDT, JSON Patch, JSON Pointer and binary codec toolkit for building collaborative document infrastructure.
Streams MoE experts from SSD so a 125B 4-bit Qwen can run on Macs with far less RAM, via MLX/Swift with an Ollama-compatible API.
Local-first framework built on SQLite with end-to-end encryption, typed schemas and CRDT sync where the server never sees plaintext.