Visual Studio Code — The Code Editor Used by 75% of Developers Worldwide, Free, Open Source, and Transformable into an IDE for Any Language
In a nutshell: Microsoft’s free and open-source code editor. With 50,000+ plugins, it can become an IDE for any programming language, with built-in Git, terminal, and debugger — the top choice for developers worldwide.
A Code Editor That Can Write Python, Debug JavaScript, Deploy Docker, Connect to Remote Servers — and It’s Completely Free
When Microsoft released Visual Studio Code in 2015, nobody expected it to become the most popular code editor on the planet. Stack Overflow’s developer survey has shown for years that about 75% of developers worldwide use VS Code. It ended the competition between Sublime Text and Atom, and also took many users away from JetBrains IDEs.
VS Code’s secret is: it’s an “editor core + infinitely extensible plugins.” In itself, it’s just a lightweight code editor (based on the Electron framework), but with different plugin combinations, it can become:
- A Python IDE (Python plugin + Pylance language server)
- A front-end powerhouse (HTML/CSS/JS/TypeScript + React/Vue/Angular plugins)
- A C/C++ development environment (C/C++ plugin + CMake + debugger)
- A remote development terminal (SSH Remote plugin for direct remote server coding)
- A database management client (SQL/Redis/Mongo plugins)
- A document writing tool (Markdown preview + spell check + word count)
- A Docker management interface (Docker plugin)
The same VS Code, the same interface — depending on which plugins you install, it can play completely different roles.
What Can VS Code Do?
1. IntelliSense: Understands Your Code Better Than You Do
VS Code’s intelligent code completion (IntelliSense) isn’t just “you type the first few letters, it shows possible suffixes.” It understands the code context:
- Auto-completes variable names, function names, class names (accurate to what you defined in the current scope)
- Shows function parameter hints (parameter names, types, descriptions)
- Hover over any identifier to see its definition and documentation
- Automatically imports missing modules/packages
- Warns you before you write erroneous code
Behind these features is LSP (Language Server Protocol) — another open protocol invented by Microsoft. Any programming language just needs to implement an LSP server, and VS Code can provide complete IntelliSense for it.
2. Built-in Git: Commit, Diff, Resolve Conflicts All in the Editor
VS Code’s “Source Control” panel on the left (Ctrl+Shift+G) graphicalizes Git operations:
- Modified files are listed, click to open a diff view (side-by-side display of changes)
- You can edit code directly in the diff view
- Enter commit message → Ctrl+Enter to commit
- One-click push to remote
- Branch switching, merge conflict resolution all done in the interface
For daily commits, you don’t need to switch to the terminal to type git add, git commit, git push — and of course, if you prefer, Ctrl+` opens the built-in terminal, and command-line operations work just as well.
3. Debugger: Breakpoints, Variable Inspection, Call Stack, Conditional Breakpoints
VS Code has built-in debugger support. Click to the left of a line number — a red dot appears (breakpoint). Press F5 to start debugging → the program pauses at the breakpoint → the left panel shows all current variable values → you can step over, step into, step out.
Supports conditional breakpoints: not just “pause when this line executes,” but also “only pause when x > 100.” This is crucial for debugging complex logic.
4. Remote Development: Code Lives on the Server, You Edit Like It’s Local
VS Code’s Remote Development extension is another killer feature:
- Remote - SSH: Connect to a remote Linux server via SSH. You edit and run code on the server directly from your local VS Code interface, just like it’s local
- Remote - Containers: Develop inside a Docker container. The team’s development environment is uniformly defined via a Dockerfile — new members pull it and start with one click. Everyone’s development environment is identical
- WSL: Develop in Windows’ WSL (Windows Subsystem for Linux), VS Code seamlessly connects
For developers who develop on Windows but deploy on Linux servers, remote development eliminates the painful cycle of “write locally → upload to server → debug → modify → upload again.”
5. Extension Marketplace: 50,000+ Plugins
VS Code’s extension marketplace is the most active among all editors. Any feature you need, someone has probably already implemented it as a plugin:
- Language support: Python, Java, Go, Rust, C#, PHP, Dart, Lua…
- Framework integration: React, Vue, Angular, Django, Spring Boot…
- Tool integration: Docker, Kubernetes, GitHub Copilot, Jupyter Notebook
- Customization: Themes, icon packs, color schemes, fonts
- Productivity: AI code completion (GitHub Copilot), code snippets, bookmark management, TODO highlighting
GitHub Copilot (AI coding assistant) deserves special mention. Its integration with VS Code is the best among all editors — it can provide real-time code completion suggestions for entire blocks of code as you write. Copilot requires a subscription ($10/month or $100/year), but for professional developers, it’s a productivity multiplier.
6. Built-in Terminal
Ctrl+` opens the built-in terminal (PowerShell / Bash / WSL / Git Bash). You can run any command in the terminal — install packages, start services, run tests — without switching to a separate terminal window. You can even open multiple terminal tabs simultaneously.
Professional Media and User Reviews
| Media | Review |
|---|---|
| Stack Overflow | ”Visual Studio Code is the most popular developer environment tool — used by 75% of developers worldwide” |
| How-To Geek | ”VS Code is the Swiss Army knife of code editors — it does everything, and the extension ecosystem is unbeatable” |
| TechCrunch | ”Microsoft’s VS Code has become the default code editor for a generation of developers” |
What Real Users Say
“Five years of front-end development. Went from Sublime Text → Atom → VS Code. Each switch was because the previous one couldn’t meet my needs, but I’ve been on VS Code for 4 years without moving — because nothing ‘couldn’t be met’ has appeared yet. TypeScript support is especially good (Microsoft’s own language, first-class treatment).” — Front-end Developer, 知乎
“Teaching Python入门 at university. I have students use VS Code instead of PyCharm — VS Code is free, lightweight, and has a unified interface. When students graduate and join companies, they’ll probably still be using VS Code, so the learning investment won’t be wasted.” — University Programming Instructor, V2EX
“Remote SSH is an indispensable feature for me daily. Our deep learning server is in the server room. I write code on my Windows laptop at my desk. VS Code connects via SSH — the code is on the server, the GPU is on the server, but my editing experience feels just like local.” — AI Engineer, B站
“GitHub Copilot + VS Code = my biggest productivity leap in 2024. Writing unit tests, generating boilerplate code, translating code comments — these things save me at least 30% of keyboard time. $10/month is the most worthwhile subscription I’ve ever paid for.” — Full-stack Developer, Reddit
Comparison with Similar Tools
| Dimension | VS Code | JetBrains IDE | Sublime Text | Notepad++ |
|---|---|---|---|---|
| Startup Speed | ⭐⭐⭐ Slower | ⭐⭐ Slow | ⭐⭐⭐⭐⭐ Fastest | ⭐⭐⭐⭐⭐ Fastest |
| Code Intelligence | ⭐⭐⭐⭐ Needs plugins | ⭐⭐⭐⭐⭐ Native | ⭐⭐⭐ Basic | ⭐ None |
| Plugin Ecosystem | ⭐⭐⭐⭐⭐ 50000+ | ⭐⭐⭐⭐ Thousands | ⭐⭐⭐⭐ Thousands | ⭐⭐⭐ Hundreds |
| Git Integration | ⭐⭐⭐⭐⭐ Complete | ⭐⭐⭐⭐⭐ Complete | ⭐⭐⭐ Needs plugin | ⭐ Needs plugin |
| Remote Development | ⭐⭐⭐⭐⭐ Native | ⭐⭐⭐⭐ Supported | ⭐ None | ❌ None |
| AI Code Assistant | ⭐⭐⭐⭐⭐ Copilot | ⭐⭐⭐⭐ AI Assistant | ⭐ Needs plugin | ❌ None |
| Memory Usage | ⭐⭐ Higher | ⭐ High | ⭐⭐⭐⭐⭐ Low | ⭐⭐⭐⭐⭐ Low |
| Debugger | ⭐⭐⭐⭐ Extension | ⭐⭐⭐⭐⭐ Native | ⭐ None | ❌ None |
| Cross-platform | ✅ All platforms | ✅ All platforms | ✅ All platforms | ❌ Windows only |
| Price | Free | Partially paid | $99/purchase | Free |
Selection advice:
- All-purpose code editor + free + most active ecosystem → VS Code (75% of developers choose it, safe default)
- Need native deep language support (Java/Python/PHP/Go heavy projects) → JetBrains IDE (IntelliJ/PyCharm/PhpStorm/GoLand, stronger native IDE, partially paid)
- Pursuing极致 startup speed + lightweight editing → Sublime Text (performance ceiling, but features need manual setup)
- Just lightweight open/edit/search text and code → Notepad++ (fastest and lightest, but no project development features)
Download and Installation Guide
Official Download (Recommended)
VS Code’s only official website is code.visualstudio.com:
| Channel | Download Link | Description |
|---|---|---|
| Official Website | code.visualstudio.com | Windows/macOS/Linux |
| GitHub | github.com/microsoft/vscode | Open source repository |
⚠️ Safety reminder: VS Code’s official website is
code.visualstudio.com. The software is open source (MIT license), installer about 100MB. Note the distinction: Visual Studio Code (free open-source editor) and Visual Studio (Microsoft’s heavy IDE) are two different products. When people say “VS Code,” they mean the former.⚠️ About VSCodium: Although VS Code’s source code is open source, Microsoft’s official build includes some telemetry (usage data collection) and proprietary components (like the Microsoft extension marketplace). If this concerns you, download VSCodium (vscodium.com) — it’s built from VS Code’s open-source code but with all telemetry and proprietary components removed.
3-Minute Quick Start
- Open code.visualstudio.com, download the Windows version
- During installation, check “Add to PATH” and “Set VS Code as default editor for supported file types”
- After launching → Ctrl+Shift+X to open the extension marketplace
- Search for the programming language plugin you need (e.g., “Python”) → Install
- Open your project folder → Start coding
- Ctrl+` opens terminal, F5 for debugging, Ctrl+Shift+G for source control (Git)
Recommended Settings and Plugins
Basic settings:
- File → Preferences → Settings: Search “format on save” → enable auto-formatting on save
- File → Preferences → Keyboard Shortcuts: View and customize all shortcuts
- Settings Sync: Log in with a GitHub/Microsoft account → enable settings sync → automatically sync your plugins and configuration across multiple computers
Plugins almost every developer should install:
- GitHub Copilot (AI code completion, $10/month)
- GitLens (Git enhancement — shows blame, author, and time for each line)
- Prettier (code formatter)
- Error Lens (displays error messages inline after the code line, not in the bottom panel)
- Path Intellisense (auto-completes file paths)
Frequently Asked Questions
Q: Is VS Code an IDE or an editor? Strictly speaking, it’s a “code editor,” but with plugins it can approach IDE-level functionality. Compared to JetBrains IDEs (PyCharm, IntelliJ, etc.), VS Code’s native code intelligence (without plugins) is weaker, but with language-specific plugins installed, the gap narrows significantly. For most developers and most projects, VS Code’s capabilities are entirely sufficient — that’s why 75% of developers use it.
Q: Can VS Code run on low-end computers? VS Code is based on Electron (Chromium engine), so startup speed is not as fast as Sublime Text or Notepad++. On older computers with 4GB RAM, it may be slightly slower, but normal use after startup is fine. If you only need to quickly edit text on a very old computer, Notepad++ is a better choice.
Q: Do I need to pay for it? Completely free. GitHub Copilot (AI assistant) is an optional paid service. All other features (including almost all plugins in the marketplace) are free.
VS Code is the ultimate default option in the code editor world — it may not be the best in every dimension, but in the sum of all dimensions, no editor can beat it. When someone asks “what editor should I use to write code,” answering “VS Code” has a 75% chance of being right. That’s not coincidence — it’s something it has proven over a decade.