Daily issue / 2026-08-16
Useful things that surfaced in Hacker News discussions on 2026-08-16. Open the context to see why each one caught our attention—or jump straight to the original thread.
What we found
A browser drum visualizer that turns drawn shapes into resonant sounds.
Source discussion: Show HN: Eigendrum - Draw any shape and hear what it sounds like as a drum
“What a great visualizer tool!”
peter_d_sherman · recommendation
Direct HN comment
“This is brilliant!”
rpastuszak · recommendation
Direct HN comment
A tactical map-based World War II submarine simulation game with native Linux support.
Source discussion: Show HN: Silent Shark – tactical map-based WWII submarine sim
“I bought it a few days ago. Thank you for including native Linux support <3 So far, it's really fun and the tutorial is great!”
marvinblum · recommendation · first hand use
Direct HN comment
A language-oriented programming language with a featureful runtime and standard library.
Source discussion: Racket v9.3
“Racket is great! The runtime is reasonably fast, and the standard library is exceptionally featureful”
pavpanchekha · recommendation · production use
Direct HN comment
A Python wrapper for MeCab, a Japanese-language tokenizer.
Source discussion: A spectre is haunting Unicode
“He’s done awesome work in the Japanese NLP space over the last decade which has really helped me in my language learning projects. He maintains a mecab (Japanese tokenizer) wrapper for Python”
joshdavham · recommendation · first hand use
Direct HN comment
A typed YAML story framework for executable integration-test specifications.
Source discussion: Yadda 3.0.0: BDD in the Age of AI Agents
“I used hitchstory (YAML based stories) for doing this coz it's terse and typed.”
MoreQARespect · comparison · first hand use
Direct HN comment
A YouTube documentary about the Helwan HA-300 and its Cold War origins.
Source discussion: In 1962, Egypt's Missile Program Lost Its Key Scientist Without a Trace
“I First heard of the project via a pretty good youtube documentary”
somat · recommendation
Direct HN comment
An interactive explainer on Bézier curves, their geometry, and visual construction.
Source discussion: The mathematical beauty of hyperbezier curves
“This guy's explainers and animations were leagues beyond any other resource I could find through Google searc at the time.”
momojo · recommendation · first hand use
Direct HN comment
A dialogue-style introductory calculus book by Lev Tarasov.
Source discussion: Simplifying and Refactoring Introductory Calculus (2018)
“Calculus: Basic Concepts for High Schools by Lev Tarasov. Soviet-era book written as a dialogue between the author and reader. Absolutely fantastic”
rramadass · recommendation
Direct HN comment
A classic introductory calculus book by Morris Kline.
Source discussion: Simplifying and Refactoring Introductory Calculus (2018)
“Calculus: An Intuitive and Physical Approach by Morris Kline. A classic; any book by Morris Kline is a must-have”
rramadass · recommendation
Direct HN comment
A two-volume introductory calculus set by H. C. Verma and collaborators.
Source discussion: Simplifying and Refactoring Introductory Calculus (2018)
“Calculus: The Princess of Mathematics by H.C.Verma et al. A two-vol must-have affordable set.”
rramadass · recommendation
Direct HN comment