Contextal

Context7 is Upstash's context-engineering toolkit for agents, helping applications manage long context windows, retrieval injection, and history compression.

LangMem is LangChain's memory layer for agents, helping developers add long-term memory, replay summaries, and context management to improve multi-turn performance.

Crawl4AI is a web crawling toolkit for LLM and agent systems, offering structured extraction, site traversal, cleanup, and crawl controls for external knowledge acquisition.

Graphiti is a temporal knowledge-graph engine for agent memory, helping systems continuously accumulate long-term context.