
Tailwind CSS
Windows95
Virtual Windows 98
Vast.ai
Geo Bootstrap
UI Movement
Neumorphism UI
A design system for building faithful recreations of old UIs

PhET Interactive Simulations
GeoGebra
LABSTER
Brilliant.org
WolframAlpha
Interactive STEM learning platform with hands-on simulations. Explore Physics, Chemistry, Math & Biology through 3D visualizations and real-time parameter manipulation — not passive video watching.
Which is more popular?
Based on our record, 98.css seems to be more popular. It has been mentioned 22 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | jdan.github.io | vectora.one |
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| Platforms | — | |
| Company | — | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of 98.css yet.
Learn STEM by Manipulating It Vectora is an interactive learning platform built for students aged 15–20 (GCSE, A-Level, AP, early undergraduate) and educators who want to teach through exploration, not memorization. Why Vectora? Traditional STEM education relies on static diagrams and...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of 98.css yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing 98.css and Vectora.one.
Vectora.one's answer:
Vectora is built around one principle: understanding through manipulation. Unlike traditional e-learning platforms that deliver content through video lectures or text, every resource on Vectora is an interactive simulation where students directly control variables and observe real-time results. We combine academic credibility with a modern software experience — the interface feels like a professional tool, not a children's app. We also offer full bilingual support (English and Chinese) across both UI and educational content, serving students globally with localized experiences rather than simple translations.
Vectora.one's answer:
Most STEM learning tools fall into two camps: free but outdated (like PhET), or enterprise-priced and inaccessible to individual students (like Labster). Vectora sits in the middle — a modern, beautifully designed platform at an affordable price point ($10/mo). Our simulations are built with Three.js and React, delivering smooth 3D visualizations that run in any browser with no downloads or plugins. We cover Chemistry, Physics, Math, and Biology in a single platform, while competitors typically specialize in one subject. And our founding price lock means early adopters keep their rate forever, even as we add more resources.
Vectora.one's answer:
Students aged 15–20 studying STEM subjects at the upper-secondary and early undergraduate level — think GCSE, A-Level, AP, and first-year university courses. They're comfortable with technology and want to genuinely understand concepts, not just memorize formulas. Our secondary audience is educators — high school teachers, tutors, and lecturers who use Vectora's simulations as interactive classroom demonstration tools during lessons.
Vectora.one's answer:
Vectora started from a frustration with how STEM is taught. Too many students struggle with abstract concepts in Physics and Chemistry because they can only see static diagrams in textbooks. We believed that if students could actually touch and manipulate these concepts — rotate a molecule, adjust the wavelength of a wave, drag a vector — they would build real intuition. The name comes from "Vector," reflecting the precision and directionality of STEM thinking. We launched as a solo-developer project, focusing on depth and quality over quantity, and grew organically through YouTube and TikTok educational content that drives students to the platform.
Vectora.one's answer:
Vectora.one's answer:
Share your experience with using 98.css and Vectora.one. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


> border-color: var(--vb-light) var(--vb-dark) var(--vb-dark) var(--vb-light); This creates 45 degree corners. Feel free to lift any CSS you need from https://jdan.github.io/98.css/, it's MIT licensed. I used a box-shadow hack to get the... - Source: Hacker News / about 18 hours ago
Wow it’s aggressively vibe coded. Nothing inherently wrong with that, but it looks a bit amateurish which is funny. I’m still waiting on 98.css to become the standard for vibe coded sites. You don’t have to read docs anyway if you’re... - Source: Hacker News / about 2 months ago
There's an entire lightweight CSS lib around the Win9x look as well: https://jdan.github.io/98.css/. - Source: Hacker News / 4 months ago
Tracking Vectora.one since Apr 2026.
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