Libro

In plain words

Libro is an open-source memory system for AI agents that solves the problem of AI applications forgetting user information between sessions. It functions as a user context layer that gives AI agents persistent memory without requiring pipeline changes—developers simply install the SDK. The system uses local vectorization at no cost, automatically chunks information semantically, and includes a Chrome extension for building user context across websites. It's designed for developers building AI applications that need to remember user preferences and interactions over time.

written from the facts on this page · September 2026

From the sources

Most AI apps have goldfish memory. Libro fixes this. We are the first open-source User Context Layer that gives your AI agents infinite memory with zero pipeline changes. Just install the SDK, and your AI instantly remembers user preferences across sessions. Features include zero-cost local vectorization, automatic semantic chunking, and a Chrome Extension to build context passports anywhere on the web.

The ultimate free AMM Layer for AI Applications. Transform conversations into structured, evolving user understanding. Build AI agents with infinite memory using our zero-cost local vectorization, semantic deduplication, and drop-in SDK.

Floating notes drift apart. Files scatter in the void. Messages remain disconnected. Standard AI applications forget you the moment you close the tab. Disparate data points magnetically attract. Our real-time memory nodes connect through an implicit graph, structuring your unstructured life. The memory graph lights up. Semantic indexing at the edge processes relationships in milliseconds, injecting relevant memory without bloated token windows. The entire graph reorganizes around your intent. Fly through your connected memories and retrieve exactly what you need, exactly when you need it. Your bot remembers user preferences, past topics, and communication style across every conversation.…from libro.co.in

• 
  Second Brain for AIMay 2026 · github.com · ▲286

  Persistent memory for Claude, ChatGPT & Cursor. Free.

• 
  cognee2025 · cognee.ai · ▲382

  Memory for AI Agents in 5 lines of code

• 
  AgentmemoryMay 2026 · agent-memory.dev · ▲310

  Persistent memory for Claude Code, Codex & coding agents

• AP
  A plain-text cognitive architecture for Claude CodeMar 2026 · lab.puga.com.br · ▲157

  One memory, not one per tool. Cog gives AI agents a shared, structured memory layer using plain-text files — portable across Claude Code, Codex, Cursor, Gemini CLI, Windsurf, Copilot, and more.

• 
  DeltaMemoryFeb 2026 · deltamemory.com · ▲104

  Most AI agents forget everything between sessions. We built DeltaMemory to fix that. It's a cognitive memory layer that gives agents persistent recall, automatic fact extraction, and temporal reasoning — via a single SDK call. Key numbers: - 89% accuracy on LoCoMo long-term conversation benchmark - 50ms p50 retrieval latency - 97% cost reduction vs raw token re-processing Open source SDKs, works with any LLM stack. Currently in early access. Happy to answer questions about the architecture, benchmark methodology, or how we handle knowledge graphs.

• 
  Claude-MemDec 2025 · cmem.ai · ▲115

  AI agent memory, everywhere. claude-mem is open-source memory for Claude Code; cmem links it to any MCP client — Cursor, Codex, more — via one private link.

• 
  Spira Maxima▲578

  Video model that turns script into viral social media videos

  AI · 17d ago · spira.ai

• 
  Rill Browser▲540

  The browser where Claude Code and Codex work beside you

  AI · 17d ago · rill.love

• 
  Germany's new sovereign AI model Kolibri▲424

  Kolibri is Aleph Alpha

  AI · 19d ago · tej.as

• 
  Giving Opus 5.5 a simulated paint canvas▲392

  Paintings by AI models: programs run through a simulation of oil paint.

  AI · 20d ago · stillwet.art

• 
  PixVerse R2▲381

  A real-time world model you can explore and change

  AI · 29d ago · world.pixverse.video

• 
  Hemory▲381

  Keep listening. Searchable memory for your AI agents.

  AI · 30d ago · hemory.com

• 
  Fundraisly▲1,537

  AI fundraising agent that finds investors and books meetings

  AI · Jun 2026 · fundraisly.com

• 
  Homebrew 6.0.0▲1,481

  Today, I’m proud to announce Homebrew 6.0.0. The most significant changes since 5.1.0 are a new tap trust security mechanism, the new faster, smaller, default internal Homebrew JSON API, sandboxing on Linux, better defaults informed by our user survey, many brew bundle improvements, improved performance and initial support for macOS 27 (Golden Gate). Happy to discuss any questions here!

  Dev tools · Jun 2026 · brew.sh

• 
  Performative-UI – A react component library of design tropes▲1,181

  Hi HN! I was super frustrated at apps like tiktok and wechat preventing me from saving or downloading the animated gifs, so I made a little tool to turn a screen recording into a slack-sized emoji. Hope you get some value from this!

  Life & fun · Jun 2026 · vorpus.github.io

• 
  Upstream▲976

  The inbox designed for humans and agents

  AI · Jun 2026 · upstream.do

• 
  Goldfish▲958

  Press Option. It knows your work and replies like you

  AI · Jun 2026 · goldfish.sh

• 
  I made Google Trends for Hacker News by indexing 18 years of comments▲822

  Search 18 years of Hacker News and chart how any topic, tool, or person trended. Overlay terms to compare their rise and fall across 45M posts and comments.

  Life & fun · Jun 2026 · hackernewstrends.com