VS Code
Dev ToolsFree
The world's most popular code editor
The world's most popular free code editor with extensions for everything.
code editorIDEdeveloper tool
Visit Tool Back to all tools
Best Free Dev Tools Tools — Curated by CodexStudio
The free developer tools we use every day: from VS Code and GitHub to Postman and Regex101. Whether you're building APIs, debugging regex, or managing cron jobs, this list has you covered.
CodePen
Dev ToolsFreePro
Live HTML/CSS/JS playground in the browser
Online HTML/CSS/JS playground. Share, fork, and demo code live in the browser.
HTMLCSSJavaScript
Visit ToolGitHub
Dev ToolsFreePro
Host code and collaborate with Git
Host code, collaborate on projects, and manage version control for free.
version controlGitcode hosting
Visit ToolPostman
Dev ToolsFreePro
Test and debug APIs visually
Test and debug APIs visually. Every developer's go-to tool for API work.
API testingREST APIdebugging
Visit ToolRegex101
Dev ToolsFree
Build and test regex with live explanation
Build, test, and debug regular expressions with live explanation and match highlights.
regexregular expressionsdeveloper tool
Visit ToolJSON Formatter
Dev ToolsFree
Format and validate JSON instantly
Paste ugly JSON and get a clean, readable, collapsible tree instantly.
JSONformattervalidator
Visit ToolCrontab Guru
Dev ToolsFree
Translate cron expressions into plain English
Translate cron schedule expressions into plain English. Every DevOps person loves this.
cronschedulerDevOps
Visit ToolChoosing dev tools tools
Developer utilities that earn a permanent bookmark: code editors and playgrounds, API clients, version control interfaces, and the small format-and-inspect tools you reach for several times a day without thinking about it.
The selection favours things that work in a browser or install cleanly, and that do not require an account to be useful. A tool you have to sign into before it will format a JSON blob is not saving you time.
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