Other9 hours ago
Ratkio
Useful online calculators for business, finance, mathematics, science, and more.
@jega_csaba · X
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Useful online calculators for business, finance, mathematics, science, and more.
@jega_csaba · X
Create and export Mermaid diagrams including flowcharts, ERDs, and sequence diagrams online.
ghosts_ · HN
I've been slowly adding some new free tools to Moxie Docs (partly for SEO, partly to illustrate some of our feature sets before any commitment) for some reason this mermaid editor one blew up on Google rankings so I figured I'd share in case people find it useful! We also have ADR, AGENTS.md, LLMs, and a few other free tools.
Select a crop to calculate its value, mutations, and trading profit.
growagarden-calculator — 页面精美、功能强大的 《Grow a Garden》 游戏交易 / 攻略工具，在疯狂圈粉 1600 万 + 玩家的 Roblox 神作《Grow a Garden》中，想靠“三秒算账”闯荡菜市？这就是 Grow a Garden Calculator 存在的意义：帮你秒算作物价值、预测突变收益，还附送一整套天气 / 交易 / 攻略工具，专治“不会算
Lumi is an interactive AI tutor for UK A-Level and GCSE students. Talk to it out loud, upload your notes or a past paper, and watch it draw the explanation on a live whiteboard you
@rayhankhilji · X
The edtech that will actually replace schools and universities:
Use 100+ free online calculators for math, chemistry, physics, loans, health, and AI costs—no signup needed.
u/averageChilean · Reddit
Built a free tool site to help my brother study — now has 100+ tools, would love feedback My brother's in high school and needed something more visual to study chemistry, physics, and math, so I used Claude to build him a simple site with interactive calculators and visualizers. I'm not a programmer or from a tech background, so without AI this wouldn't have happened, at least not this fast. It ended up helping him a lot more than I expected, so I kept expanding it, added a bunch of other
Pick your math level and topic, then solve generated quizzes with instant answers.
@EsaiePelinyn · X
Check out what I just built with Lovable!
Build and scale systems in an interactive simulator to learn system design.
@echo_muss · X
Learn system design Try
@lightsilver323 launched https://t.co/km4f6JUYoW Try it now right in your browser (no install needed): 🔗 https://t.co/mv5ingcQDm
@OneBhashi · X
launched Try it now right in your browser (no install needed): 🔗
CruxPack turns lecture PDFs and slides into clean structured notes, flashcards, and practice problems — built for students who need to memorize fast.
@cruxpack · X
CruxPack, built with Claude Code; turns a lecture PDF or your own notes into flashcards, notes, and practice questions. A second model checks the first against the source for hallucinations. Demo: Would love to post in r/vibecoding if allowed.
Explore interactive visualizations of mathematical curves, fractals, symmetry, and topology.
@vkuoo · X
Added more demos showcasing graph-math relationships, built with Codex.
A coding network where learners build visible proof through courses and challenges with mentoring and company operations.
@Michaela200_5 · X
