Life & fun · alternatives · 2026
24 alternatives to Spin Lab
Hey HN, I built Spin Lab: a browser-based interactive explainer for table-tennis spin. It visualizes topspin/backspin, spin rate, ball trajectory, bounce behavior, and why the opponent’s return reacts the way it does. I built it because spin is central to table tennis, but most explanations are either too hand-wavy or too static. Thanks Fable, we miss you
Spin Lab is a browser-based interactive tool that explains table-tennis spin mechanics through visualization. It demonstrates topspin and backspin effects, spin rates, ball trajectories, bounce behavior, and how these… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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2024 · graphgame.sabrina.dev · its alternatives →
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- 4SA
I've frequently found myself using [nvitop](https://github.com/XuehaiPan/nvitop) to diagnose GPU/CPU contention issues. The two best things about it are: - It's easy to install if I can access pip in the container - It makes a compelling screenshot (which helps me communicate with coworkers.) With those two lessons in mind: Here is Sping! Purpose: Help observe and diagnose latency issues at layer 4+ (TCP/HTTP/HTTPS) Two good things about it: - It's easy to install if you have pip. (Available at…
2025 · dseltzer.gitlab.io · its alternatives →
- 5IW
I’ve been working on a puzzle game for a few years as a side project. The game is based on a small region of tiles in a grid that is mirrored, modified, and mirrored again. It’s based on a novel phenomenon I noticed where, once these mutations happen a few times, the original region can be hard to recognize. You have a feeling there are symmetries in the image, but they are just out of grasp. Going further, if only part of the region is visible, such as mirroring off the edge of the board, it adds to the feeling and it becomes a satisfying puzzle to solve. I originally published this on the…
2024 · hidden-mirrors.com · its alternatives →
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Swing your arm at your webcam to play 3D tennis in browser
Apr 2026 · livewebtennis.com · its alternatives →
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Playcall▲97The open-source AI alternative to Gong
Aug 2026 · playcall.dphenomenal.com · its alternatives →
- 8CE
We built ChessBoss at the TechCrunch Disrupt hackathon this week. It didn’t make the top 10 but I thought Hacker News might think it’s pretty cool. https://devpost.com/software/chess-boss There are these really cool smart chessboards that can suggest moves and track your games... but they’re $400 and weigh 19 pounds. And of course there are apps that can analyze games but tracking and inputting games by hand is a huge pain. Or fully-digital chess apps... but board games are way more fun in real life! We wondered: “why can’t you just do that in software and bring the best…
2019 · devpost.com · its alternatives →
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ChessEye▲822D chessboard scanner & analyzer to calculate the best moves
2021 · play.google.com · its alternatives →
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Spicy Chess▲76Hello! I created SpicyChess(https://spicychess.com) because I wanted a tactics training app that would have the following features: - Spaced Repetition. - Countdown time to simulate blitz Chess where you have to find the best move quickly. - The ability to save puzzles for later review. I'd love to hear any feedback that you may have !
2023 · spicychess.com · its alternatives →
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Explore tilings on the hyperbolic plane. Contribute to timhutton/hyperplay development by creating an account on GitHub.
2014 · github.com · its alternatives →
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Tennis Bits▲67Swing your racket, and put on your cheese hat!
2016 · apps.apple.com · its alternatives →
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I built this because I got tired of Stockfish giving me evaluations (+0.5) without explaining the actual plan. Most opening explorers focus on statistics (Win/Loss/Draw). I wanted a tool that explains the strategic intent behind the moves (e.g., "White plays c4 to clamp down on d5" vs just "White plays c4"). The Project: Comprehensive Database: I’ve mapped and annotated over 3,500 named opening variations. It covers everything from main lines (Ruy Lopez, Sicilian) to deep sidelines. Strategic Visualization: The UI highlights key squares and draws arrows based on the textual…
Jan 2026 · atlaschess.me · its alternatives →
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Pivvot▲56A fun test of spatial awareness and reflexes (great game)
2013 · wtrebella.com · its alternatives →
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Fun. Fast. Fair. Just spin and decide.
2025 · spinthewheeldecisionmaker.com · its alternatives →
- 20AS
28d ago · nh2.me · its alternatives →
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PickerSpin▲12Free online spin-the-wheel — pick a name, prize, or winner.
2025 · pickerspin.co · its alternatives →
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We wanted to test if a smaller model like GPT-4.1-mini could beat its bigger brother 4.1 at the game Tic-Tac-Toe using only context engineering. We put them in a 100-game tournament. For the smaller model, we gave it a few examples of winning moves from past games right before it made its own move. The results were clear. Without the examples, the smaller model struggled against GPT-4.1. With the examples, its effectiveness increased by nearly 200%, and it consistently won. It's a simple demonstration, but it shows that a smaller, faster model with good, timely examples can outperform a more…
2025 · github.com · its alternatives →
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AI that watches your game and helps you improve.
Dec 2025 · ttmatchanalyzer.com · its alternatives →
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A random picker wheel for names, decisions, and giveaways
Jul 2026 · spinthelist.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →