crw
★ 1.2k
vs
letta
★ 25.3k
crw vs letta
crw: fastCRW is a high-performance engine designed to transform URLs into clean markdown or structured JSON. It provides a unified solution for web searching, scraping, mapping, crawling, and data extraction, available as a local Rust binary or a managed API.; letta: Letta is a powerful platform for building stateful AI agents equipped with advanced memory, enabling them to learn and self-improve over time. It provides both a command-line interface for local agent execution and a comprehensive API with Python and TypeScript SDKs for seamless integration into applications.
01
TL;DR
crwBrowser Automation · ★ 1.2k
Converting web pages into structured data (markdown/JSON) for further processing or storage.
lettaMemory & Context · ★ 25.3k
When to choose:
- You want a long-lived agent that remembers past work and rewrites its own memory and context over time.
- You want one agent reachable from CLI, desktop, browser, mobile and messaging apps, with subagents, schedules and hooks.
- You want memory you can inspect: the README says context is tracked in git and can sync to your own repository.
When to skip:
- You only need to add memory to an agent you already use through MCP; a small MCP memory server is a lighter fit.
- You rely on older Letta tutorials or the V1 API server: the project restructured, and the V1 server is retired.
- You want everything to work without signing in: Letta Cloud is the default backend and some features need it.
02
Side-by-Side Comparison
Field
crwlettaCategory
Browser Automation
Memory & Context
Stars
★ 1.2k
★ 25.3k
License
AGPL-3.0
Apache-2.0
Install Command
curl -fsSL https://fastcrw.com/install | sh
npm install -g @letta-ai/letta-code
Updated
1d ago
1w ago
Open Source
Yes
Yes
Tags
Web Scraping, Data Extraction, Content Transformation
Stateful AI, Agent Platform, Advanced Memory
03
Features
crw01Scrape one URL to markdown, HTML, links, screenshots, or schema JSON
02Crawl a bounded site and collect its pages
03Map and discover URLs without scraping every page
04Search the web and optionally scrape selected results
05Extract structured fields from one or many URLs
letta01Build stateful AI agents with advanced memory
02Agents capable of learning and self-improvement over time
03CLI tool for running agents locally in your terminal
04Comprehensive API for integrating agents into applications
05Support for skills and subagents; fully model-agnostic
04
Use Cases
crw↳Converting web pages into structured data (markdown/JSON) for further processing or storage.
↳Building AI agents that require real-time and structured information from the web.
↳Collecting data for market research, competitive analysis, or content aggregation.
↳Monitoring website changes or tracking specific data points across multiple pages.
↳Integrating web data extraction capabilities into custom applications via SDKs or REST API.
letta↳Running AI agents locally in your terminal for coding and general tasks.
↳Integrating stateful AI agents into custom applications using the API and SDKs.
↳Developing self-improving AI systems that adapt and learn continually.
05
Best For
crwEssentialTrending
lettaMost PopularEssentialTrending
FAQ
FAQ
What is the difference between crw and letta?
Both crw and letta are in the Browser Automation category. crw has 1.2k stars, while letta has 25.3k stars.
Which is better, crw or letta?
The best choice depends on your use case. Choose crw if Converting web pages into structured data (markdown/JSON) for further processing or storage., and letta if Running AI agents locally in your terminal for coding and general tasks..
Is crw free or open source?
Yes, crw is open source on GitHub (AGPL-3.0).
Is letta free or open source?
Yes, letta is open source on GitHub (Apache-2.0).
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