# DB
ConnectionStrings.com - Forgot that connection string? Get it here!
SQL Snippets ™: Tutorials for Oracle Developers
Database Star Blog - Database Star
60 Best Resources for Learning SQL - Database Star
Siva Academy - YouTube
TechOnTheNet - Online tutorials for Excel, SQL, Oracle, PLSQL and more!
cx_Oracle 8.3.0-dev documentation
SQL client programming - SQL Server | Microsoft Docs
PL/SQL Language Fundamentals
DuckDB - An in-process SQL OLAP database management system
PG SQL
SQLPage - SQL websites: simple and open-source database app builder.
# SQL Schema Designers
Draw Entity-Relationship Diagrams, Painlessly
WWW SQL Designer
drawDB - Draw, Copy, and Paste - Free and open source, simple, and intuitive database design editor, data-modeler, and SQL generator.
# Excel
Welcome to Simple Excel VBA - Simple Excel VBA
# Haskell
Learn You a Haskell for Great Good!
# Python
Awesome Python
廖雪峰的官方网站
Python 之禅 - FooFish
Python Tutorials - Real Python
Python Cookbook 3rd Edition Documentation - python3-cookbook 3.0.0 文档
The Flask Mega-Tutorial Part I: Hello, World! - miguelgrinberg.com
Django 博客教程（第二版）追梦人物的博客
鎖プログラム | Python、ブロックチェーンの技術
Go vs. Python
Python Code - Python Programming Tutorials and Recipes
How to print colored text in terminal in Python?
# PySide6
Python GUIs – Create GUI applications with Python and Qt
Python PyQt5 Tutorial Videos - Jie Jenn
PyQt5 GUI Thursdays - Codemy.com
# Python in Frontend
Streamlit - A faster way to build and share data apps Streamlit turns data scripts into shareable web apps in minutes.All in pure Python. No front‑end experience required
Exploring Data and Sharing Findings with Pygwalker and Streamlit
streamlit-aggrid | Implementation of Ag-Grid component for Streamlit
streamlit-option-menu | a simple Streamlit component that allows users to select a single item from a list of options in a menu
gradio - Build & share delightful machine learning apps
reflex - Frontend. Backend. Pure Python.The open-source framework to build and deploy web apps - no Javascript required.
Taipy - Taipy is a Python open-source library designed for easy development of data-driven web applications.
Dash - Dash is the original low-code framework for rapidly building data apps in Python.
NiceGUI - Meet the NiceGUI. And let any browser be the frontend of your Python code.
Flet - Build multi-platform apps in Python powered by Flutter. Flet enables developers to easily build realtime web, mobile and desktop apps in Python. No frontend experience required.
Voilà - Voilà allows you to convert a Jupyter Notebook into an interactive dashboard that allows you to share your work with others. It is secure and customizable, giving you control over what your readers experience.
Shiny - Easy web apps for data science without the compromises
FastHTML - Modern web applications in pure Python
# Python Project Manager and Linting
Poetry | Python packaging and dependency management made easy
uv | An extremely fast Python package and project manager, written in Rust.
Ruff | https://docs.astral.sh/ruff/
# Data Processing
PyGWalker | Your DataFrame’s Visual Analytics Companion
Polars | DataFrames for the new era
# Data Serialization and Validation
Pydantic Validation - Data validation using Python type hints
marshmallow - Object serialization and deserialization, lightweight and fluffy
[Django Rest Framework Serializers ](https://www.django-rest-framework.org/api-guide/serializers/#serializers)
# R
R 语言教程 | 菜鸟教程
# JavaScript
The Modern JavaScript Tutorial
Read Understanding ECMAScript 6
Dmitri Pavlutin Blog
SamanthaMing.com
JavaScript 教程 - 网道
ES6 入门教程 - ECMAScript 6 入门
TypeScript 入门教程
全栈公开课 2020
函数式编程指北
阮一峰的网络日志
Node.js Toolbox
Component Party
Prisma | Simplify working and interacting with databases
Zod | TypeScript-first schema validation with static type inference
The Best Javascript|Vue|Angular|React Grid in the World
# Electron
ElectronJS Crash Course 2022 - YouTube
Create a Desktop App With JavaScript & Electron - YouTube
# React
React Email | The next generation of writing emails
# jQuery
You Might Not Need jQuery
# JSON
Get a full fake REST API with zero coding in less than 30 seconds (seriously) - typicode/json-server
jq - jq is a lightweight and flexible command-line JSON processor.
JSON Viewer - JSON Hero
JSON Crack | More Than a JSON Editor
# Playwright
Playwright Beginner Tutorials - Automation Step by Step @RaghavPal
# Node
Node.js Streams - Dennis O’Keeffe
Intro to Vite - Scrimba
# Rust
The Rust Programming Language - The Rust Programming Language
Rust By Example
Rust Cookbook
常见问题解答・Rust 程序设计语言
Rust 基础教程 - 简单教程，简单编程
Rust 中文教程 - 极客学院 Wiki
# Go
Go by Example
Go 语言中文文档
PegasusWang 的读书笔记
Go 语言学习之路 | 李文周的博客
Go vs. Python
# Java
Jackson JSON Series - baeldung
yet another insignificant Programming Notes
Java Tutorials - HowToDoInJava
Java Library Tutorials - HowToDoInJava
Stars-one - 博客园
Java - 随笔分类 - 码农神说 - 博客园
Road 2 Coding
Core Java Tutorial with Examples - Learn Java Programming | Java2blog
# JavaFX
JavaFX GUI Full Course ☕【𝙁𝙧𝙚𝙚】 - YouTube
# Apache POI
Apache POI Quick Guide
Baeldung Apache POI
Apache POI: Read and Write Excel File
# Kotlin
From Java to Kotlin
Swift is like Kotlin
Comparison to Java | Kotlin
课程介绍与学习指南・android 入门教程
# C#
痕迹 g - 博客园
# WPF
Welcome - The complete WPF tutorial
# Qt
# QML
Qt6 QML Book: A Detailed Guide to Using Qt
Qt6 QML Book - 《Qt6 QML Book》 - 书栈网・BookStack
Qt5 Cadaques — Qt5 Cadaques Book vmaster
# PyQt
Create Python GUIs with PySide6 — Simple GUIs to full apps
PyQt Tutorial
# QSS
使用 QSS 美化 PyQt 界面，分享 6 套超赞皮肤 - 知乎
# C/C++
C Programming - Codeforwin
yet another insignificant Programming Notes
vegetablesssss 的博客
Qt5 Cadaques — Qt5 Cadaques Book vmaster
C++ Archives - Java2Blog
makefile 教程
# Assembly
The faker’s guide to reading (x86) assembly language // TimDbg
# CSS
CSS Bed This is a collection of classless css themes to use as starting points in web development.
SamanthaMing.com
Web Design Experiments by Jen Simmons
峰华前端工程师 - 让你学会前端开发
CSS position 相对定位和绝对定位 | 菜鸟教程
Flex 布局示例
Flex 布局教程：语法篇 - 阮一峰的网络日志
CSS Grid 网格布局教程 - 阮一峰的网络日志
Interactive CSS Flexbox Generator · Loading.io
Interactive CSS Grid Generator | Layoutit Grid
CSS Grid Generator
CSS Layout
Color Formats in CSS - hex, rgb, hsl, lab
CSS Bed
Basics of CSS Grid: The Big Picture - YouTube
CSS Loaders: A collection of more than 600 loading animations
A gentle introduction to anchor positioning by Saron Yitbarek
# Tailwind
Tailwind CSS Tutorial #1 - Intro & Setup - YouTube
Tailwind Crash Course | Project From Scratch - YouTube
daisyUI — Tailwind CSS Components
# HTML
Mock </ HTML > Free fake HTML responses for testing and prototyping hypermedia applications.
# HTMLX
Dynamic Web Pages Without JavaScript? - Intro to HTMX - YouTube
# SVG
A Friendly Introduction to SVG - Josh WComeau
SVG 图像入门教程 - 阮一峰的网络日志
SVG Tutorial
SVG · WebPlatform Docs
A Deep Dive Into SVG Path Commands
A complete guide to using CSS filters with SVGs - LogRocket Blog
SVG filters · WebPlatform Docs
# Code Digram
# HTML Mail
Can I email
# Docker
Docker - 从入门到实践
# API
public-apis/public-apis: A collective list of free APIs
DevDocs API Documentation
# Math
数学乐
# Algorithm
windliang
# EDI
Microsoft.Solutions.BTARN.XSDClasses.RNPIPs._0C4Request Namespace | Microsoft Docs
michaelachrisco/Electronic-Interchange-Github-Resources: List of EDI (Mostly) Github Resources
JSCAPE, LLC Blog | Managed File Transfer & Network Solutions | AS2
ANSI X12 报文标准 | 知行软件 EDI
# ERP
Online Training Oracle Application
Forms Triggers
Oracle ERP ER Diagrams | Triniti
# VS Code
VS Code 入门教程 2020 | 一套面向 VS Code 初学者的视频教程
# Practice
30 seconds of code
# Toolkit
Palettes | Flat UI Colors 🎨 280 handpicked colors ready for COPY & PASTE
Gradient Hunt - Beautiful Color Gradients
Table Convert Online - table to markdown,csv,json,latex table,excel,sql,xml
1001 Fonts ❤ Free Fonts Baby!
snippet generator
WasmExplorer
Smallpdf.com - A Free Solution to all your PDF Problems
Sprite Cow - Generate CSS for sprite sheets
Remove Background from Image - remove.bg
aria2
Programming-Idioms Different Languages Compare
Online Ping, Traceroute, DNS lookup, WHOIS, Port check, Reverse lookup, Proxy checker, Bandwidth meter, Network calculator, Network mask calculator, Country by IP, Unit converter
Ping, mtr, dig and TCP port check from multiple locations
Programming Fonts - Test Drive
regex101: build, test, and debug regex
Devhints — TL;DR for developer documentation
Supported Functions · KaTeX
Mockaroo - Random Data Generator and API Mocking Tool | JSON / CSV / SQL / Excel
q - Text as Data - Run SQL directly on CSV or TSV files
smtp4dev - the fake smtp email server for development and testing
p.yusukekamiyamane Icons
# Tutorial
GeeksforGeeks | A computer science portal for geeks
# Chinese
漢典
全历史
中国传统颜色手册
古诗文网 - 古诗文经典传承
# English
iESLPod | 英语播客
Oxford Practice Grammar | 学习资源 | Oxford University Press
Thesaurus - Synonyms, Antonyms, and Related Words
# HTTP Test
httpbin.org
JSONPlaceholder - Free Fake REST API
HTTPie – command-line HTTP client for the API era
# Package Repository
Openbase: choose the right package every time
# Online Editor
StackBlitz | Instant Dev Environments | Click. Code. Done. - StackBlitz
Online C++ Compiler
# Anime
TV アニメ「３月のライオン」公式サイト
ヒグチユウコ Higuchi Yuko Official Website
《三月的狮子》 Endcard & 作者介绍 - 初之音
# Music
全球儿歌乐园 - BeddySongs
