The best of Hacker News - July 21, 2025

1.
XMLUI

495 points

2.
Coding with LLMs in the summer of 2025 – an update

454 points

3.
New colors without shooting lasers into your eyes

331 points

4.
FFmpeg devs boast of another 100x leap thanks to handwritten assembly code

238 points

5.
Staying cool without refrigerants: Next-generation Peltier cooling

223 points

6.
Simulating hand-drawn motion with SVG filters

159 points

7.
Show HN: Conductor, a Mac app that lets you run a bunch of Claude Codes at once

158 points

8.
Stdio(3) change: FILE is now opaque

125 points

9.
EU commissioner shocked by dangers of some goods sold by Shein and Temu

112 points

10.
Show HN: X11 desktop widget that shows location of your network peers on a map

102 points

11.
Agents built from alloys

90 points

12.
Log by time, not by count

58 points

13.
The Genius Device That Rocked F1

57 points

14.
“Dynamic Programming” is not referring to “computer programming”

52 points

15.
What my mother didn’t talk about (2020)

51 points

16.
IPv6 Based Canvas

40 points

17.
Using the Matrix Cores of AMD RDNA 4 architecture GPUs

31 points

18.
SIOF (Scheme in One File) – A Minimal R7RS Scheme System

30 points

19.
How slow motion became cinema’s dominant special effect

16 points

20.
ESP32-Faikin: ESP32 based module to control Daikin aircon units

11 points

Previous
Next