Meet EverOS: An Open Source Markdown-First Agent Memory Runtime With Hybrid BM25 + Vector Retrieval and Self-Evolving Skills

EverMind has open-sourced EverOS, a local-first memory runtime designed for AI agents. The system stores agent memory as plain Markdown, utilizing SQLite and LanceDB for indexing. EverOS implements a hybrid BM25 and vector retrieval mechanism, supporting multimodal ingestion and self-evolving Skills under an Apache 2.0 license. This architecture addresses the stateless nature of LLMs, which typically lack awareness of past interactions, by providing a structured, open-source framework for persistent agent memory and retrieval.