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Developer Tools

1. Focus Lens

Screenshot spotlight editorFocusLens is a browser-based screenshot spotlight editor. It helps product teams, founders, designers, and technical writers highlight one important part of a user interface without adding complex annotation layers.

Design Tools Developer Tools

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2. ScreenSize.net

A fast, free online tool to instantly detect your screen resolution, viewport size, and device pixel ratio. Perfect for developers and designers optimizing responsive web layouts.

Design Tools Developer Tools Online Community

3. WonderLaunch

WonderLaunch is like a launchpad plus a long-term product directory. A founder submits a product, the product enters moderation, and once approved it gets assigned a launch date. Before launch day, the product page acts as a pre-launch countdown page where visitors can learn what is coming, subscribe for launch updates, and share the page. When the countdown ends, the same URL transforms into the live product page with upvotes, comments, product details, screenshots, founder info, and leaderboard placement.Unlike a one-day launch site where products disappear quickly, WonderLaunch is built around permanent discoverability. Products stay indexed, searchable, categorized, and ranked over time. The platform also has AI-powered search so visitors can describe what they need in natural language and discover relevant tools.

Developer Tools Directory Platforms

4. Pastery

Pastery is a native macOS clipboard manager that captures everything you copy.It uses cutting-edge tech already on your Mac to analyze images, links, and text, making your whole history instantly searchable.Everything you've ever copied appears in a visually pleasing Timeline — find anything in seconds.It all runs locally; your clipboard never leaves your device.Pastery also transforms text before you paste: change case, format JSON, fix spacing, and more in one click.

Developer Tools Machine Learning Productivity

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5. buggy.run

buggy.run audits your web app, finds vulnerabilities and data leaks, and explains exactly how to fix them in plain English.

Developer Tools SaaS Security

6. Tangy Tools

I built TangyTools because I was tired of bulky text sites full of ads and sign-ups. TangyTools is a collection of simple, free online text tools designed to get you fast results with zero friction. Every utility runs completely in your browser. This means there is no tracking, no account to create, and your data never leaves your device. Right now, you can use it as a:• Subscript Generator – Perfect for chemistry formulas (like H₂O) or math notes.• Superscript Generator – Great for math exponents (like x²), citations, or footnotes.• Small Caps Generator – Turn lowercase words into clean, minimalist capital letters for bios and headings.• Shakespeare Translator – Turn modern English into fun, classic Elizabethan prose.Just type or paste your text, get your instant layout styling, and copy the output directly into Discord, Twitter, Canva, or a Google Doc. More text utilities are coming soon! Check it out and let me know what you think.

Design Tools Developer Tools Productivity

7. svg-to-png

SVG to PNG is a free, browser-based image conversion tool that converts SVG files to PNG instantly — no file uploads, no sign-up required, no watermarks. Powered by WebAssembly, all processing runs locally in your browser for complete privacy. Supports batch conversion of up to 20 files, custom scale options (1x/2x/4x), transparency control, and quality settings. Also includes PNG to SVG, JPG to PNG, WebP to PNG, and SVG Compressor tools. Built for designers and developers.

Developer Tools Productivity

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8. appstackbuilder

App Stack Builder helps founders, startups, and businesses discover, compare, and evaluate software faster. Explore AI tools, SaaS products, developer tools, browser extensions, mobile apps, and business software in one place. Find alternatives, compare features, discover newly launched products, and get recommendations for building the right technology stack. Whether you're validating an idea, launching a startup, scaling a business, or replacing existing software, App Stack Builder simplifies the research process and helps you make smarter software decisions with confidence.

Artificial Intelligence Developer Tools SaaS

9. Snapy

Snapy turns any file, PDF, or AI-built page into a clean shareable link in seconds, with no signup. Every link has built-in tracking that shows who opened it, when, and which pages they viewed, plus a custom subdomain, QR code, password, and expiry controls. It also publishes pages built in tools like Claude, v0, and Bolt as live links. Free, no account.

Developer Tools Productivity Web Development

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10. Roblox GUI Maker

Roblox GUI Maker helps Roblox Studio creators generate ScreenGui layouts for menus, HUDs, inventory screens, shop panels, settings panels, and other game UI from a prompt. It provides a Roblox-style preview plus Lua starter code that developers can copy into Studio and customize.

Artificial Intelligence Developer Tools Game Development

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