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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.

VS Code

Dev Tools
Free

The world's most popular code editor

The world's most popular free code editor with extensions for everything.

code editorIDEdeveloper tool
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CodePen

Dev Tools
FreePro

Live HTML/CSS/JS playground in the browser

Online HTML/CSS/JS playground. Share, fork, and demo code live in the browser.

HTMLCSSJavaScript
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GitHub

Dev Tools
FreePro

Host code and collaborate with Git

Host code, collaborate on projects, and manage version control for free.

version controlGitcode hosting
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Postman

Dev Tools
FreePro

Test and debug APIs visually

Test and debug APIs visually. Every developer's go-to tool for API work.

API testingREST APIdebugging
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Regex101

Dev Tools
Free

Build and test regex with live explanation

Build, test, and debug regular expressions with live explanation and match highlights.

regexregular expressionsdeveloper tool
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JSON Formatter

Dev Tools
Free

Format and validate JSON instantly

Paste ugly JSON and get a clean, readable, collapsible tree instantly.

JSONformattervalidator
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Crontab Guru

Dev Tools
Free

Translate cron expressions into plain English

Translate cron schedule expressions into plain English. Every DevOps person loves this.

cronschedulerDevOps
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