Alternatives to Leviathan

Token-efficient microkernel AI agent with ML-based smart routing, persistent memory, a layered sandbox, built-in search, and local embeddings. Apache 2.0.

Pizza Bot is a local-first Apache-2.0 inbox for long-running AI agents, with Unread and Action queues on DeepAgents and LangGraph.

A PreToolUse hook that blocks destructive Git and file commands and secret access before AI coding agents run them, defeating reordered flags, shell wrappers, and one-liners.

Luvus is Apache-2.0 Rust mission control that watches, resumes, and orchestrates coding agents in one TUI.

Open-source durable execution platform for AI agents in TypeScript. Build long-running tasks and chat agents with no timeouts, checkpoint-based resume, retries, queues, and idempotency.

Vectorize's open-source agent memory system. Retain, recall, and reflect over structured facts and mental models in PostgreSQL, ranked first on LongMemEval.

SoL-Pi is NVIDIA's MIT Pi extension that cuts agent tokens with four opt-in mechanisms and no patch to Pi itself.

ByteDance's open-source multimodal AI agent stack for controlling computers and browsers, with Agent TARS CLI, remote operators, and the UI-TARS-1.5 model.

Persistent, searchable memory for AI coding agents with 95.2% recall on LongMemEval, running locally on SQLite with MCP, hooks, and 54 tools for Claude Code,.

Open-source TypeScript agent framework: agents, workflows, RAG, memory, MCP, and eval with a hosted platform. About 27,437 GitHub stars (2026-08-25).

Open-source workspace that assigns issues to coding agents as teammates. Self-hostable, 26 CLIs, daemon runs on your machine.

Open-source Microsoft sandbox and benchmark that verifies AI agents reliably complete stateful business tasks, exposing the discovery-reliability gap.

Open-source capability layer that gives AI agents one-click access to the entire internet — Twitter, Reddit, YouTube, Bilibili, XiaoHongShu, and more — with cookies kept local and fully open, auditable code.

Google's open-source orchestrator for agentic workloads. Declare Tasks, Workspaces, and Models in YAML and AX sandboxes and runs them on Kubernetes.