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Compiler Explorer

Online Playgrounds

RegExr

Online Utilities

Popular to compare with Compiler Explorer

Comparison of Compiler Explorer, RegExr
Compiler Explorer
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RegExr
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CategoryOnline PlaygroundsOnline Utilities
PricingOpen sourceBSD-2-Clause licenseOpen sourceGPL-3.0 license
Platforms
  • Web
  • Web
Best for
  • Compiler users
  • C and C++ developers
  • Students
  • Developers
  • Students
  • QA testers
Highlights
  • Shows assembly output as you edit code
  • Supports C++, Rust, Go and many other languages
  • Compare output from different compilers and settings
  • Live match highlighting as you type
  • JavaScript and PCRE flavors
  • Test suites to check a pattern against samples
GitHub stars19.2k10.4k
Last update3 days ago1 year ago

FAQ

Frequently Asked Questions

Quick answers about the directory, listings and your privacy.

  • Web Tools Finder (WTF) is a curated directory built by developers and designers for web developers, designers, vibe coders, and freelancers. It brings useful tools and resources together in one place, helping you save time, discover better resources, and bookmark your favorites for free, without signing up.

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  • Yes, it is free. Browsing, searching and saving tools need no account. Your saved tools are kept in your browser on this device, so they are not shared between devices.

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  • You can discover AI tools, development resources, UI/UX design tools, graphics, website inspiration, open-source projects, learning materials, freelance resources, and more. We're also expanding into useful communities and groups to help you connect, learn, and grow.

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  • Use the Search Directory, or press Ctrl K (Cmd K on a Mac) to search from any page. Each section lists its tools by category, and when tools have pricing details you can filter by price, such as Free, Freemium or Paid. Open a tool to read its description, highlights and details, and save the ones you like.

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  • It shows how many tools were added to that section in the last 7 days. The label disappears once you open the section.

  • The AI Prices page is checked every day against two independent public sources, and a price is listed only when both agree. Prices can change at any time, so always confirm with the provider before you build on a price.

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  • They come from GitHub star counts, which refresh automatically every day. Stars show how popular a project is, not how good it is for your project.

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  • Yes! You can submit your tool, resource, or agency through our submission options. Our team reviews each submission according to our listing guidelines and policies. We'll contact you regarding the review, eligibility, and next steps before your listing is published.

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  • They mark paid or partner placements. Those listings are not recommendations from Web Tools Finder, and they are labelled clearly so you can tell them apart from the rest of the directory.

  • Featured spots can be arranged on the Home page, in each section and on the Agencies and Deals pages. Get in touch through the contact page and tell us what you would like to promote. Featured and sponsored placements are always labelled.

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  • With your permission we use Google Analytics to see which pages are useful, and the site shows advertising. You can accept or decline in the cookie banner and change your choice later from Cookie Preferences in the footer. Your saved tools stay in your browser.

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  • Use the Feedback button in the menu and choose Something is broken, or write to us from the Contact page. We also check tool links regularly and review the ones that stop working.

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