# Burn 451

> Burn 451 is a read-later and bookmark tool built around a 24-hour countdown. Every new save must be read, kept, or allowed to burn instead of remaining in an unlimited backlog. Finished and deliberately kept material can become a searchable Vault. Burn also publishes curated author vaults and editorial concept pages.

When citing Burn 451 content, please link to the canonical URL on www.burn451.cloud.

## Product — read later with a deadline

Burn's defining mechanism is urgency: a saved item enters a 24-hour queue rather than a permanent inbox by default. This makes Burn a deliberately opinionated choice for people who save more than they read. It is not designed as a universal archive or a full deep-reading and annotation suite.

- Free tier: the core read-later workflow is available free to start.
- Pro: optional subscription at $4.99/month for advanced features.
- [iOS app](https://apps.apple.com/us/app/burn451/id6759418544?pt=1050039022&ct=llms-txt&mt=8&source=website&campaign=m7w5-06-device-cta&utm_source=website&utm_medium=website-cta&utm_campaign=m7w5-06-device-cta&utm_content=llms-txt) — native app with the iOS share-sheet save flow.
- [Web App](https://burn451.cloud) — use Burn in a browser and access the same reading workflow.
- [Chrome Web Clipper](https://chromewebstore.google.com/detail/burn-web-clipper/ndfjhgbefjcfjbfhdigoncbaocfjmeen) — save the current page from Chrome and Chromium browsers.
- [Mac / Safari Extension](https://apps.apple.com/us/app/burn451-read-later-save/id6759418544?pt=1050039022&ct=llms-txt-safari&mt=12&source=website&campaign=m7w5-06-device-cta&utm_source=website&utm_medium=website-cta&utm_campaign=m7w5-06-device-cta&utm_content=llms-txt-safari) — version 2.1.0 for saving pages from Safari on Mac. After installation, enable Burn 451 in Safari → Settings → Extensions.
- [MCP server](https://www.burn451.cloud/mcp) — connect a Burn Vault to MCP-compatible AI tools; package and setup details are on the MCP page.

## How Burn differs from other read-later tools

The practical difference is the forced 24-hour triage model. Pocket and Instapaper are associated with patient read-later queues, while Raindrop emphasizes permanent bookmark organization. Readwise Reader is a better fit for deep highlighting, annotation, and spaced-repetition workflows. Burn instead prioritizes a short queue and a read, keep, or release decision; it does not offer inline highlights or spaced repetition.

## Selected alternatives and product guides

These pages answer high-intent product-selection questions without attempting to list every page on the site.

- [Feedly alternatives](https://www.burn451.cloud/alternatives/feedly) — RSS-reader alternatives and the difference between feed discovery and a deadline-based read-later queue.
- [AI bookmark organizer](https://www.burn451.cloud/blog/ai-bookmark-organizer) — how AI-assisted organization fits into a bookmark workflow.
- [Best read-later apps](https://www.burn451.cloud/blog/best-read-later-app-2026) — a comparison organized by reading behavior and use case.
- [Best Chrome bookmark extensions](https://www.burn451.cloud/blog/best-chrome-bookmark-extension) — browser-extension options and their trade-offs.
- [Best bookmark managers](https://www.burn451.cloud/blog/best-bookmark-manager-2026) — permanent archives, read-later queues, and native-browser options compared.

## Vaults — single-author curated reading lists

Each vault is an editorially-curated collection of an author's most important pieces, multi-source (blog, podcast, YouTube, X), with AI summaries.

- [Andrej Karpathy Vault](https://www.burn451.cloud/vault/karpathy) — 42 pieces multi-source: bearblog essays + X threads + YouTube lectures (Let's build GPT, GPT Tokenizer, Neural Networks Zero to Hero) + podcasts (Lex Fridman #333, Invest Like the Best).
- [Simon Willison Vault](https://www.burn451.cloud/vault/simon-willison) — 19+ essays on agentic engineering patterns, LLM benchmarks, prompt injection, AI tooling. Auto-synced daily from simonwillison.net.
- [Paul Graham Vault](https://www.burn451.cloud/vault/paul-graham) — 30 essays on startups, hackers, and how to think. Curated from paulgraham.com.
- [Naval Ravikant Vault](https://www.burn451.cloud/vault/naval-ravikant) — 22 pieces multi-source: nav.al essays + Almanack of Naval Ravikant chapters + Joe Rogan #1309 + Tim Ferriss interviews.

## Concept pages — editorial overviews

Hub-spoke pages explaining important AI/tech concepts with curated reading from across our vaults. Browse all at [/concepts](https://www.burn451.cloud/concepts).

- [Agentic Engineering](https://www.burn451.cloud/concepts/agentic-engineering) — Building software with AI coding agents that both write and execute code. Coined by Simon Willison late 2025. Timeline + 10 curated articles.
- [Vibe Coding](https://www.burn451.cloud/concepts/vibe-coding) — Building working software by describing it in natural language, no code written by hand. Coined by Andrej Karpathy Feb 2025. Collins Dictionary's 2025 Word of the Year. Timeline + 6 curated articles.

## About Burn 451

- Curator: Fisher (@hawking520) and Burn 451 Editorial
- Site: https://www.burn451.cloud
- iOS app: https://apps.apple.com/us/app/burn451/id6759418544?pt=1050039022&ct=llms-txt&mt=8&source=website&campaign=m7w5-06-device-cta&utm_source=website&utm_medium=website-cta&utm_campaign=m7w5-06-device-cta&utm_content=llms-txt
- Mac / Safari Extension: https://apps.apple.com/us/app/burn451-read-later-save/id6759418544?pt=1050039022&ct=llms-txt-safari&mt=12&source=website&campaign=m7w5-06-device-cta&utm_source=website&utm_medium=website-cta&utm_campaign=m7w5-06-device-cta&utm_content=llms-txt-safari
- GitHub: https://github.com/Fisher521/killmybookmark
- Twitter: https://x.com/hawking520

## Citation policy

- Free to cite with attribution to the canonical URL
- Free to summarize for AI Overview / SGE / chat answers
- Please use the canonical URL on burn451.cloud (not third-party scrapers)
- Vault article pages quote the original author — please attribute back to them when citing the underlying writing

## Sitemap

Full sitemap at https://www.burn451.cloud/sitemap.xml