OpenClaw is the predecessor to Moltis, created by Peter Steinberger (@steipete). Moltis evolved from the OpenClaw project as a complete Rust rewrite with enhanced features:
| Feature | OpenClaw | Moltis |
|---|---|---|
| Language | TypeScript 87%, Swift 8.5% | Rust (67% of codebase) |
| Runtime | Node.js 22+ required | Single binary (no runtime) |
| Distribution | ~28 MB + dependencies | ~44 MB self-contained |
| Memory | SQLite with sqlite-vec | SQLite + FTS + vector search |
| Sandboxing | Docker | Docker, Podman, Apple Container |
| Voice I/O | Limited | 15+ TTS/STT providers |
| Channels | 25+ messaging platforms | Web UI, Telegram, Discord, WhatsApp, Teams, Signal |
| Startup | >30s cold start | ~1s cold start |
| RAM (idle) | >100 MB | ~30 MB |
Migration: Moltis supports full read-only import of OpenClaw workspace (conversations, skills, settings).
ZeroClaw - Lightweight Rust rewrite of OpenClaw with migration support. Optimized for minimal resource usage.
| Feature | ZeroClaw | Moltis |
|---|---|---|
| Distribution Size | 3.4 MB | 44 MB (standard), 3.4 MB (lightweight) |
| Cold Start | <10ms | ~1s |
| RAM (idle) | <5 MB | ~30 MB |
| Use Case | Minimal SBC deployments | Full-featured AI gateway |
NanoClaw - Agents run in isolated Apple Containers (safe bash) with Agent Swarms. Designed for Raspberry Pi and low-resource environments.
| Project | Language | Runtime | Size | RAM | Best For |
|---|---|---|---|---|---|
| Moltis | Rust | Single binary | 44 MB | 30 MB | Full-featured self-hosted AI gateway |
| OpenClaw | TypeScript | Node.js | ~28 MB | >100 MB | Legacy, migration to Moltis |
| ZeroClaw | Rust | Single binary | 3.4 MB | <5 MB | Minimal deployments |
| NanoClaw | Rust | Single binary | Small | Low | Raspberry Pi, agent swarms |
| Ollama | Go | Single binary | Varies | Varies | Local LLM inference |
| AnythingLLM | Node.js | Docker | Varies | Varies | RAG-focused deployments |
Choose Moltis if:
Choose ZeroClaw if:
Choose OpenClaw if:
Choose Ollama if:
Choose AnythingLLM if: