Third-party memory systems aren't inherently better than OpenClaw's built-in memory_wiki — they serve different purposes and work best together. The memory_wiki is a compiled knowledge vault that organizes information into structured wiki pages with claims, evidence, and provenance. Third-party plugins like QMD, LanceDB, and SQLite handle active recall, semantic search, and structured data storage. The recommended architecture combines both: memory_wiki for durable knowledge management, QMD for search/recall, and SQLite for structured data. Community reviews rate QMD as the best standalone option (S-tier), but the full hybrid approach is considered ideal for robust agent memory.