Life & fun · alternatives · 2026
24 alternatives to 99% Invisible - 29: Cul de Sac
A cul-de-sac has real, quantifiable design flaws
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. 99% Invisible - 29: Cul de Sac launched in 2015; newer entries below may have overtaken it.
- 1
A story of architectural engineering gone wrong in NYC
2015 · its alternatives →
- 2
How Imperfections In Products Make Them Lovable
2015 · its alternatives →
- 3
- 4
The future of Sketch and the story of how we got where here
2016 · layout.fm · its alternatives →
- 5
Every game is a designed system. Even a certain board game.
2015 · overcast.fm · its alternatives →
- 6
More ships buried under the streets of SF & Moving Sand
2016 · its alternatives →
- 7
To my knowledge, this is the first formally verified implementation of a 3D constructive solid geometry (CSG) operation: mesh intersection, implemented in Lean 4 and verified against a concise specification that pins down the surface of the resulting mesh exactly and guarantees practical well-formedness conditions on the triangulation. This project is also an experiment in avoiding having to trust AI-generated code. A human reviewer only needs to read 93 lines of formal specification and run the Lean checker to certify the correctness of the kernel, skipping the intricate 1000+ lines of…
Jul 2026 · github.com · its alternatives →
- 8
A pipeline that translates Rust GPU code into formal Coq models, as a foundation for memory model proofs - neelsomani/vericuda
2025 · github.com · its alternatives →
- 9
Where do you store hidden & forbidden objects or ideas?
2016 · its alternatives →
- 10
Figma, and the future of design tools
2015 · layout.fm · its alternatives →
- 11
PixelSpace▲68A tediously accurate scale model of the solar system
2014 · joshworth.com · its alternatives →
- 12
Bitwise operations and conversions to hexadecimals
2016 · flippybitandtheattackofthehexadecimalsfrombase16.com · its alternatives →
- 13
Microsoft's interest in open source and Sean's progress imp…
2015 · bikeshed.thoughtbot.com · its alternatives →
- 14
After devastating earthquakes; give people half of a house
2016 · its alternatives →
- 15
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Sketch 47's new native shared symbol library
2017 · sketch.com · its alternatives →
- 17
Witness-Centered Filter Layer for LLM Applications - SpecStudio-net/Vivek
Jun 2026 · github.com · its alternatives →
- 18
A lightweight, no-retraining verification layer that rejects smooth hallucinations by measuring structural tension instead of probability.
Dec 2025 · github.com · its alternatives →
- 19BU
Radical Minimalism Built from Scratch
Aug 2026 · axiomfactory.co · its alternatives →
- 20
hg_sdf▲7A glsl library for building signed distance functions
2015 · mercury.sexy · its alternatives →
- 21DS
2023 · designducky.ai · its alternatives →
- 22
FreeCADfree▲11FreeCAD, the open source 3D parametric modeler
Feb 2026 · freecad.org · its alternatives →
- 23PA
Hey everyone, I was wondering if a Poincaré disk would be able to usefully show the local structure of a graph while showing most of one I used a collection of ML papers to explore this
Mar 2026 · paperverse.net · its alternatives →
- 24
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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 →