The Web Developer’s Toolkit
devdocs.io 14 — API documentation for all popular programming languages and frameworks. Includes instant search and works offline too.
glitch.com 18 — create your own web apps in the browser, import GitHub repos, use any NPM package or build on any popular frameworks and directly deploy to Firebase.
bundlephobia.com 8 — quickly find the import cost (download size) of any package in the NPM registry. Or upload your package.json file to scan all dependencies in your project.
babeljs.io/repl 6 — Write your code in modern JavaScript and let Babel transform your code into JavaScript that is compatible with even older browsers.
codeply.com 11 — quickly build frontend responsive layouts with frameworks like Bootstrap, Materialize CSS and SemanticUI.
httpie.org 4 — a command-line tool that is useful for making HTTP requests to web servers and RESTful APIs. Almost as powerful as CURL and Wget but simpler.
regexr.com 4 — A good tool for testing your regular expressions 1 in the browser.
jex.im/regulex 6 — Write any regular expression into the editor and get a visual representation of how the pieces work.
buildregex.com 4 — Construct regular expressions visually.
Also see: The Most Useful Websites on the Internet 6
explainshell.com 2 — Type any Unix command and get a visual explanation of each flag and argument in the command.
tldr.ostera.io — Unix man pages are long and complex. This site offers practical examples for all popular Unix command without you having to dive into the man pages.
mockaroo.com 1 — quickly generate dummy test data in the browser in CSV, JSON, SQL and other export formats.
jsdelivr.com 2 — Serve any GitHub file or WordPress plugin through a CDN. Combine multiple files in a single URL, add “.min” to any JS/CSS file to get a minified version automatically. Also see unpkg.com 1.
carbon.now.sh 6 — create beautiful screenshots 1 of your source code. Offers syntax highlighting for all popular languages.
wakatime.com 1 — know exactly how long you spend coding with detailed metrics per file and even language. Integrates with VS Code, Sublime text, and all popular code editors.
astexplorer.net 3 — paste your JavaScript code into the editor and generate the Abstract Syntax Tree that will help you understand how the JavaScript parser works.
hyper.is 3 — A better alternative to the command line terminal and also iTerm. Use with the Oh My Zsh 1 shell and add superpowers to your terminal.
curlbuilder.com 2 — make your own CURL requests in the browser.
htaccess.madewithlove.be 1 — easily test the redirect and rewrite rules in the .htaccess file of your Apache server. See useful .htaccess snippets 1.
Also see: The Best Places to Download HTML Templates 1
trackjs.com 1 — monitor errors in your JavaScript based web projects and get instant email notifications when a new error is detected.
ngrok.com 2 — Start a local web server, fire up ngrok, point to the port where the localhost is running and get a public URL of your tunnel.
codeshare.io 5 — An online code editor for pair programming, live interviews with video conferences or for teaching code 1 to students remotely.
webhooks.site 1 — Easily inspect the payloads and debug HTTP webhooks in the browser. All HTTP requests are logged in real-time. Another good alternative is RequestBin 1.
surge.sh 1 — the easiest way to deploy web pages and other static content from the command line. Supports custom domains and SSL. Also see Zeit Now 1.
visbug 3 — A must-have add-on for web developers that brings useful web design tools right in your browser. Available for Google Chrome and Firefox.
puppeteersandbox.com 2 — Puppeteer is a Node.js framework for automating Google Chrome. Use the sandbox to quickly test your scripts in the browser. Also see try-puppeteer.com 2.
prettier.io/playground 1 — Beautify your JavaScript and TypeScript code using Prettier, the favorite code formatter of programmers.
json.parser.online.fr 1 — The only JSON parser you’ll ever need to analyze and beautify your complex JSON strings.
scrimba.com 3 — Create your own programming screencasts in the browser or watch other developers code.code.
katacoda.com 2 — A training platform for software developers where anyone can create their own dedicated and interactive training environments.
codesandbox.io 2 — A full-featured online IDE where you can create web applications in all popular languages including vanilla JavaScript, React, TypeScript, Vue and Angular. Also see StackBlitz.com 1 and Repl.it 1.
apify.com 3 — Write your own web scrapers using JavaScript and schedule your scrapers to run at specific intervals automatically.
vim-adventures.com 3 — The Vim text editor 1 is hugely popular among programmers. The site will help you master the various key commands through a game.
insomnia.rest 2 — A desktop based REST client that lets you create HTTP requests and view response details all in a easy-to-use interface. Advanced users may consider Postman 1.
