
FreetCode — Free Algorithm Interview Prep
Practice algorithm interview problems with solutions and interactive visualizers.
@Galliard232634 · X
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Practice algorithm interview problems with solutions and interactive visualizers.
@Galliard232634 · X
Come study with me on

Browser tools for creating cloud, database, API, and workflow diagrams without signing up.
u/Sapo-Homien · Reddit
I build iLovePDF - but for Software Engineering. No Sign-up, No ads, No limits, Nothing leaves your browser. 22 browser tools for the stuff engineers keep redrawing: cloud architecture diagrams, ER diagrams, git branching, user flows, state machines, sequence & API diagrams, annotated screenshots, and an AI-prompt builder. No signup, no ads, no limits. Everything you need, runs in your browser. Open your browser's Network tab and watch a tool do its work without a single req

Draw or import bead patterns, automatically count beads, and export PDFs.
letsgogogo · V2EX
做了一个串珠子的工具,支持拼豆。 我做了一个在线串珠图案工具 Loomet 。 可以画图案、自动算珠子数量、导出 PDF 。也支持拼豆模式。 https://loomet.app

@zdogmode https://t.co/Cdk9FF9iPM - This is a tool I built and was really useful for my own projects, so I made it available.
@tpacker · X
- This is a tool I built and was really useful for my own projects, so I made it available.

A simple but challenging counting game with polished interaction details.
数数游戏 — 数数游戏,简洁但不简单,交互细节人性化 (PC)

@RoundtableSpace a fun project! It will make you happy trust me! https://t.co/Xd0JH8yc3V
@Phoenix_I_am · X
a fun project! It will make you happy trust me!

Turn school topics and confusing text into interactive stories and infographics.
@hazemnassr · X

Transform PDFs into interactive study tools with AI chat, notes, quizzes, and flashcards.
u/twozeroes · Reddit
I spent the last year building my first project, looking for some real feedback and opinion. Hello everyone. So last year i had simple idea to make a ChatGPT to pdf website, where user can paste a link and and download the pdf of a certain part of the cha. It was also the first serious project I've ever worked on. But while building i had so many problems and new ideas while discussing with ai and i kept building. I started working on document processing, OCR, citations, highlighting, multi

Analyze cryptocurrency markets with Chan Theory patterns, K-line charts, and anomaly detection.
@onehopeA9 · X
用 DAPPOS @dappOS_com 做了一个加密货币缠论分析网站,也是我一直想做没时间做的! 来看看缠论三买的威力: 不是不会写代码。 我自己是程序员,真要硬写当然能写。 但问题是:没时间。🤡 做交易的人都懂,真正消耗人的不是“看一根 K 线”,而是把一堆信息拼起来: K 线结构。 缠论笔、中枢。 一买二买三买。 一卖二卖三卖。 资金费率。 持仓量变化。 成交量异动。 市场舆情。 这些模块涉及太多方面,写得出来,但太费时间。 所以我一直想做一个自己的交易雷达: 接币安历史数据。 用 TradingView 展示 K 线。 自动画缠论结构。 标注买卖点。 再把资金费率、持仓量、成交量和币安广场热度放进去。 想法很清楚。 但一直躺在 TODO 里。 最近用 xbubble 的 Coding 功能试了一下,直接把需求丢进去: “做一个加密货币缠论分析网站,接入币安一年历史数据,用 TradingView 展示 K 线,自动画笔、中枢、一买二买三买、一卖二卖三卖,增加异动分析和币安广场舆情热度。” 它真给我生成了一个能跑的原型。 这次最戳我的不是“AI 会写代码”。 而是 xBubble 把最消耗时间的工程杂活压短了。 以前我自己做: ❌ 搭项目结构 ❌ 爬数据源和图表库 ❌ 写 K 线处理 ❌ 写缠论结构识别 ❌ 做前端交互 ❌ 部署、改样式、修细节 一圈下来,核心想法还没验证,人先累了。 现在变成: ✅ 先描述业务目标 ✅ 让 xBubble 生成可运行原型 ✅ 我再校验规则、调整逻辑、优化体验 ✅ 把时间花在交易理解和产品迭代上 这对程序员其实很有价值。 因为程序员最缺的不是能力,而是时间和注意力。 我这个原型现在大概有几块: 第一,TradingView K 线主图。 用币安数据展示行情,再叠加缠论结构。 第二,笔和中枢。 把原本需要手动盯的结构,先自动画出来。 第三,买卖点雷达。 一买、二买、三买,一卖、二卖、三卖,先帮我筛可能的位置。 第四,异动面板。 资金费率、持仓量、成交量变化,和 K 线结构一起看。 第五,舆情热度。 把币安广场讨论热度也拉进来,看看市场情绪是不是和盘面互相印证。 你可以理解成: 我不是让 AI 替我交易。 我是让 AI 帮我做一个交易前的信息雷达。 我觉得 xBubble 和普通 AI

Free, fast, and privacy-first online utilities. Growing suite of browser-native calculators, converters, and web tools with zero server tracking.
@twistertools · X
Free, fast, and privacy-first web utilities & converters. Thank you!

A grid-based number puzzle game where you combine tiles to make 12.
sarreph · HN
Dozenal – A Game of Spatial Arithmetic

Analyze crypto markets using algorithmic analysis and on-chain intelligence for trading insights.
@luxquantcrypto · X