Top Open Library books today: Oct 21, 2026

Atomic Habits still leads Open Library Trending Books for October 21, 2026, snapshot 08:01:46.633513, the same rank 1 as October 20. Rich Dad, Poor Dad climbs 3 to 2. The 48 Laws of Power falls 2 to 3. Haunting Adeline and Diary of a Wimpy Kid are new at 8 and 9. Girl in the Glass Case and Pride and Prejudice drop off. API rows use em-dash separators; display titles below use colons. get_growth is skipped for book rows.

Top trending books on Open Library: October 21

1. Atomic Habits: James Clear

   Habit manual at rank 1, unchanged. Same lead as October 20 on the later 08:01:46.633513 stamp.

2. Rich Dad, Poor Dad: Robert T. Kiyosaki

   Finance title at rank 2, up 1 from 3. Swaps with 48 Laws.

3. The 48 Laws of Power: Robert Greene

   Strategy title at rank 3, down 1 from 2. Still in the self-help cluster.

4. The Psychology of Money: Morgan Housel

   Finance title at rank 4, up 1 from 5. Entered yesterday; now 4.

5. How to Win Friends and Influence People: Dale Carnegie

   Classic at rank 5, up 2 from 7.

6. Think and Grow Rich: Napoleon Hill

   Classic at rank 6, up 2 from 8.

7. Harry Potter and the Philosopher's Stone: J. K. Rowling

   Novel at rank 7, down 1 from 6.

8. Haunting Adeline: H. D. Carlton

   New romance title at rank 8. No separate October 21 news hook was confirmed beyond the ranked row.

9. Diary of a Wimpy Kid: Jeff Kinney

   New children's title at rank 9. No separate October 21 news hook was confirmed beyond the ranked row.

10. Twisted Love: Ana Huang

    Romance title at rank 10, down 1 from 9. See the Open Library Trending Books API page.

The live ranked board beyond today's top 10 is available via the Trends MCP API. Get your free API key

What changed on Open Library since yesterday

New: Haunting Adeline at 8, Diary of a Wimpy Kid at 9. Drop-off: Girl in the Glass Case, Pride and Prejudice. Rich Dad 3 to 2. 48 Laws 2 to 3. Psychology of Money 5 to 4. Carnegie 7 to 5. Hill 8 to 6. Harry Potter 6 to 7. Twisted Love 9 to 10. Clock 08:01:34.901090 on October 20 to 08:01:46.633513 on October 21.

What today's Open Library books reveal

The Open Library ten is still self-help plus two romances and a children's series. The new names replace yesterday's Girl in the Glass Case and Austen. Atomic Habits held 1. Generating call limit is 10. Snapshot type remains Open Library Trending Books. Display titles use colons because the API rows contain em dashes.

Track these trends in real time with Trends MCP

The ranked list came from the Trends MCP get_top_trends tool with type Open Library Trending Books and limit 10. Desks tracking this board can poll the same call.

{
  "type": "Open Library Trending Books",
  "limit": 10
}

Related trend reports

• Previous daily: Open Library trending October 20, 2026
• Data source: Open Library Trending Books API
• Evergreen: Open Library trending vs Google Trends