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A free online Unicode and ASCII character map for browsing, searching, and copying symbols, for anyone who needs a special character instead of an OS character-map tool.
Free
What to know▼
How it works
Browse characters by category or search by name/description, then click to copy to the clipboard.
Pricing
Free.
Best for
Finding and copying an emoji, symbol, accented letter, or currency sign quickly.
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Desktop API client built specifically for gRPC and Protobuf, replacing the manual grpcurl-in-terminal workflow backend engineers fall back to since REST-first tools bolt on gRPC support.
Watch out · macOS only.
What to know▼
How it works
You register your .proto files once and it automatically discovers every gRPC service and method, rendering a schema-aware request editor with enums as dropdowns.
What's different
Built specifically for gRPC and Protobuf rather than REST tools with gRPC bolted on.
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A terminal that turns natural-language descriptions of a task into a shell command for you to review before running.
What to know▼
How it works
Users type what they want to do in imperfect natural language, and the tool generates the equivalent shell command on the next terminal line for the user to inspect, edit, and run themselves.
What's different
Does not auto-execute sensitive commands — the user reviews and presses Enter.
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Collection of random generators for passwords, names, numbers, and colors with an API, for developers and casual users, instead of building your own generator.
What to know▼
How it works
Generate passwords, names, numbers, colors, and more through a customizable interface or an API.
What's different
No registration required for instant access.
Best for
Developers who want a random-generation API, or casual users needing a quick result.
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A free, no-signup toolbox of 100+ browser-based developer utilities (JSON, JWT, Base64, SQL and similar formatters and converters) aimed squarely at developers, not general users.
FreeNo sign-up
What to know▼
How it works
A collection of 100+ browser-based developer tools to format, validate, convert, and generate code for JSON, HTML, CSS, SQL, Base64, UUIDs, JWTs, and text processing.
Pricing
Free, no sign-up required.
Best for
Developers who want a no-signup toolbox of everyday formatting and conversion utilities.
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A command-line wrapper that runs your existing npm, yarn or pnpm commands through Bun for faster installs, without changing your workflow — a developer-only CLI tool, not a GUI app.
What to know▼
How it works
Intercepts npm, yarn, and pnpm commands and runs them through Bun instead, while keeping the same command syntax (npm install, yarn add, pnpm add) and formatting output to match the tool you called.
What's different
Claims 10-25x faster installs than the original package managers, is fully reversible, and never modifies your original npm/yarn/pnpm installs.
Best for
Developers who want faster package installs without changing their existing npm/yarn/pnpm commands or workflow.
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A Git-related tool aimed at solving account or identity mix-ups for developers, though the exact mechanism isn't described in the available text.
FreeOpen source
What to know▼
How it works
Automatically routes commits, pushes, and clones to the right GitHub account by reading each repo's remote URL, handling key, remote, and identity in one step.
What's different
Unlike gh auth switch (auth only) or includeIf (folder-based), it handles all three at once. Includes a setup wizard and supports unlimited profiles across platforms.
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A native (non-Electron) Git GUI for Mac and Windows built for speed and low memory use, positioned against GitKraken, SourceTree, Fork and Tower for developers who find those apps sluggish.
No sign-upWorks offline
What to know▼
How it works
A native Git GUI for macOS and Windows with a color-coded, virtualized commit graph and infinite scroll. Works fully offline and locally, with no account or cloud dependency.
What's different
Roughly 12 MB and launches in a fraction of a second, versus the 300–500 MB idle RAM and multi-second cold starts of Electron-based clients like GitKraken, SourceTree, Fork, and Tower.
Best for
Developers frustrated with the resource overhead of Electron-based Git clients.
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Fast, zero-config cross-shell terminal prompt written in Zig, with no network or telemetry.
Watch out · macOS and Linux only.
No sign-upNo tracking
What to know▼
How it works
Zero-config cross-shell prompt (fish, bash, zsh) written in Zig, showing git branch/state/status, toolchain versions for 39 languages, and a syntax-highlighted history picker on the up arrow.
What's different
Single compiled binary with no config file, no network or telemetry, rendering in about 2ms.
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Decodes a QR code from an uploaded photo entirely in-browser, no account or app install, for people who don't want to hand their images to a random QR scanner app.
Watch out · No app or sign-up needed.
Works offline
What to know▼
How it works
Upload a photo containing a QR code and it decodes it instantly in the browser.
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Open-source system that turns Obsidian into a publishing platform for Astro websites, for developers who want a local editing workflow instead of a hosted CMS.
Open source
What to know▼
How it works
Auto-detects your Astro theme and content structure, injects preconfigured plugins and hotkeys into Obsidian, and can instant-publish via the Git plugin.
Best for
Developers running an Astro site who want to write content in Obsidian.
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A free collection of web utilities like QR generators, color converters, and screen measurement tools, for developers who want quick tools without signing up.
FreeNo sign-up
What to know▼
How it works
Standalone browser utilities for common conversion and generation tasks
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170+ free browser-based calculators, text, PDF, and dev tools that run entirely client-side with nothing sent to a server, instead of ad-heavy online tool sites.
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A time-calculation app that parses everyday time expressions, durations, and timecodes into precise conversions across modes for HR, film, dev, logistics, and accounting.
Watch out · Only Android is out now; iOS is not yet available.
What to know▼
How it works
Type time in natural formats like '2h 30m + 45m' or SMPTE timecodes; the app parses and converts them while distinguishing durations from dates.
Best for
People who need to compute time math in many formats: HR, film, dev, logistics, or accounting.
Watch out
Only Android is out now; iOS is not yet available.
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A free, open-source collection of browser tools you can use instantly with no signup, install or tracking; the site doesn't say what the tools actually are.
Watch out · The description doesn't say what the actual tools do.
No sign-upOpen sourceNo tracking
What to know▼
How it works
A collection of browser-based tools you can use instantly via a link, with no signup, install or tracking.
What's different
No account, no install and no tracking required to use any tool.
Watch out
The description doesn't say what the actual tools do.
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A local, privacy-first JSON viewer and formatter for developers, with JWT decoding and CSV/YAML/TypeScript export; free for everyday use, $29 one-time for Pro features.
FreeWorks offlinePay once
What to know▼
How it works
A JSON viewer and formatter that runs 100% locally with zero network requests, handling 100MB+ files, inline JWT decoding, and export to CSV, TSV, YAML, or TypeScript (Pro features).
What's different
Positioned as a trustworthy local replacement after a popular JSON formatter with 2M+ users was sold and turned into adware.
Pricing
Free forever for everyday use; Pro is $29 one-time, lifetime.
Best for
Developers who want a JSON viewer that never sends data over the network.
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A free bulk URL opener that opens multiple links in tabs with delay, dedup, and SEO status checks.
FreeCan export my data
What to know▼
How it works
Opens multiple URLs simultaneously in separate tabs with custom delays to prevent crashes, deduplicates URLs, checks Dofollow/Nofollow status, and exports active tab lists.
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Free QR/barcode generator and scanner that encodes data directly into the code so it never expires or gets tracked, with a public API.
FreeNo adsCan export my data
What to know▼
How it works
Generates and scans QR codes and Code 128/EAN-13 barcodes that encode content directly rather than a redirect link, so they never expire or track scans; supports custom colors/logo, PNG/SVG export, and a free public API needing no key.
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Generates exact-size test files with correct magic bytes/MIME signatures for upload limits and testing pipelines.
No sign-up
What to know▼
How it works
Generates exact-size test files with correct magic bytes and MIME signatures in-browser, or downloads verified MP4/MOV/WebM/PDF/Office samples from stable URLs.
Pricing
No account or upload required.
Best for
Testing upload limits, file validation, and Playwright/Cypress fixtures.
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A free collection of 20+ browser-based developer utilities — IP checker, JWT decoder, password generator, and more — running client-side with no signup.
FreeNo sign-upNothing to install
What to know▼
How it works
A collection of 20+ browser-based utilities — IP checker, JWT decoder, email validator, password generator, speed test, and more — most running entirely client-side.
Pricing
Free, no signup, no paywalls.
Best for
Developers who want quick access to common utilities.
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A free Indonesian-language code-snippet reference with 170+ ready-to-copy snippets, for local developers and students who'd otherwise hunt through English-only docs.
Watch out · Content is Indonesian-language.
Free
What to know▼
How it works
An interactive, searchable dictionary of 170+ ready-to-copy code snippets across PHP, JavaScript, Python, HTML/CSS, and SQL.
Pricing
Free.
Best for
Indonesian developers and students who prefer a local-language reference over English-only docs.
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An open-source SDK that serves weather, ocean and elevation data as map tiles with values baked into the pixels, so you can restyle colormaps or switch to contours client-side without refetching. For developers.
FreeOpen source
What to know▼
How it works
Serves weather, ocean and elevation data as map tiles with the physical values baked directly into the pixels and decoded on the GPU, so you can change colormaps, switch to wind streamlines or contours, or re-scale client-side without refetching.
What's different
One open-source SDK works across MapLibre, Mapbox, Leaflet, OpenLayers, deck.gl and React, and the tile format is documented so you can decode it yourself without being locked to their renderer.
Pricing
Transparent pricing with a free tier.
Best for
Developers building map-based visualizations of weather, ocean or elevation data.
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A no-signup suite of web utilities spanning text, image, conversion and business tools that run without tracking, a general toolbox rather than something built for one workflow.
No sign-upNo tracking
What to know▼
How it works
A suite of instant online tools spanning text, business, development, image, conversion, and time/efficiency utilities that run without requiring signup.
Best for
Anyone needing a quick one-off utility without creating an account.
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A free collection of everyday online conversion, calculation, and utility tools — unit converters, finance calculators, JSON formatting, word counting — with no signup required.
FreeNo sign-upNo ads
What to know▼
How it works
Bundles unit converters, financial calculators, date tools, JSON formatting, word counters, and similar utilities into one free hub.
Best for
Students and professionals needing quick one-off calculations or conversions without creating an account.
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An ad-free dashboard of developer micro-utilities, covering webhook inspection, DNS checks, JSON formatting, JWT decoding, and regex testing, for quick tasks instead of scattered, cluttered tool sites.
No ads
What to know▼
How it works
A suite of 15+ developer micro-utilities for webhook inspection, DNS checks, JSON formatting, JWT decoding, and regex testing in an ad-free dashboard.
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A native, open-source desktop GUI for managing NATS messaging — connecting, publishing and subscribing, and managing JetStream, Key-Value, and Object Store — for developers on Windows, macOS, or Linux.
Open source
What to know▼
How it works
Cross-platform native desktop app for connecting to NATS servers and managing JetStream, Key-Value, and Object Store.
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Open-source CLI for developers to find and safely delete dev caches and build junk eating up Mac disk space.
Open sourceNo tracking
What to know▼
How it works
An open-source macOS CLI that scans for developer caches, build artifacts, Electron junk, and orphaned app data, showing an itemized list before deleting anything.
What's different
Never deletes without showing the itemized list first; pure bash, zero telemetry.
Pricing
Open source, MIT licensed.
Best for
macOS developers whose disk is being eaten by accumulated dev caches and build junk.
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A free set of 17+ client-side developer utilities (JSON/XML/YAML/SQL formatters, regex tester, JWT decoder, hash generator) that run entirely in the browser with nothing sent to a server.
FreeNo sign-upNothing to install
What to know▼
How it works
Provides 17+ browser-based developer tools, JSON/XML/YAML/SQL formatters, a regex tester, a JWT decoder, a hash generator and more, all running client-side so nothing pasted is uploaded or logged.
Pricing
No signup, no rate limits on the core tools.
Best for
Developers who want quick formatting/decoding tools without an account or sending data to a server.
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Five Python scripts for repetitive office tasks — CSV cleanup, bulk email, file organizing, PDF merging, web scraping. The code is free; the paid bundle adds support, and you'll need enough Python comfort to run scripts yourself.
Free
What to know▼
How it works
Five Python scripts that automate repetitive office tasks: CSV cleaning, bulk emails, file organizing, PDF merging, and web scraping.
Pricing
The code is free on GitHub; the $29 bundle adds support.
Best for
Developers or makers comfortable running Python scripts who want to automate recurring office tasks.
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A free suite of browser-based developer tools, JSON formatter, regex tester, cron builder, a WCAG accessibility checker, that runs client-side with no signup, ads, or data sent to a server.
FreeNo sign-upData stays with you
What to know▼
How it works
A small suite of browser-based dev tools — JSON formatter, regex tester, cron builder, WCAG contrast checker, and API request tester — that run entirely client-side.
What's different
No accounts, no ads, and no data sent to a server, unlike bookmarked dev-tool sites that get slower and ad-heavier over time.
Pricing
Free.
Best for
Developers who want quick utility tools without signing up or sending data to a server.
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A gamified regex-learning tool with daily puzzle hunts, timed challenges, multiplayer regex golf, and structured lessons for developers.
What to know▼
How it works
A browser-based regex practice game: solve daily hunts, beat par, race other players in multiplayer regex golf, and work through structured Academy lessons on anchors, character classes, quantifiers, groups and alternation.
What's different
Turns regex practice into competitive, gamified challenges rather than static tutorials.
Best for
Developers who want to learn or sharpen regex skills through games rather than reading docs.
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A free browser toolkit for everyday PDF, image and QR tasks (edit, compress, OCR) with no installs, plus a couple of extras like a JWT decoder and BMI calculator. A general public tool, not built for developers.
Nothing to install
What to know▼
How it works
A suite of browser-based utilities for editing PDFs, compressing images, running OCR and generating QR codes, plus extras like a JWT decoder and a BMI calculator — all without file uploads, signups or installs.
Pricing
Free.
Best for
General users needing quick everyday PDF, image and QR tasks without installing software; not built specifically for developers despite the JWT decoder.
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A bundle of everyday developer utilities — JSON formatter, regex tester, API client, code generators — in one searchable workspace, for engineers doing routine programming tasks.
What to know▼
How it works
A bundle of developer utilities in one workspace, including JSON formatters, regex testers, API clients and code generators.
Best for
Engineers who want common day-to-day dev utilities in a single place instead of scattered separate tools.
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A grab-bag of free browser-based utilities - word counter, PDF compressor, BMI calculator, JSON formatter - with no signup. A general toolbox, not built around one job.
FreeNo sign-upNothing to install
What to know▼
How it works
A collection of free browser-based utilities: word counter, PDF compressor, BMI calculator, JSON formatter, and other developer/creator/student tools.
Pricing
Free, no signup required, works in the browser.
Best for
Developers, creators, and students who need a quick one-off tool without installing anything or making an account.
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A free collection of 10 browser-based everyday utilities like a word counter and QR generator, with nothing stored.
FreeNo sign-up
What to know▼
How it works
Provides 10 free browser-based utilities — word counter, password generator, unit converter, JSON formatter, QR code generator, and calculators for loans, age, percentages, BMI, and countdowns — with nothing stored or sent anywhere.
Pricing
Free, no signup, no accounts.
Best for
People wanting quick everyday tools without creating an account.
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A free developer toolkit for image optimization, password generation, and file sharing, paired with a hand-written tips library on CSS, JS, and web performance.
FreeNo sign-up
What to know▼
How it works
Provides image optimization, resizing, conversion, and downloading, plus a secure password generator and expiring-link file sharing, with no account required.
What's different
Paired with a hand-written Pro Tips library covering CSS, JavaScript, HTML, React, Next.js, WordPress, and performance.
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A single browser page with 70+ small dev utilities (JSON formatter, Base64, JWT decoder, cron parser) so you don't need a dozen separate tab-opened tools.
FreeNo sign-up
What to know▼
How it works
Runs entirely client-side in the browser
What's different
No signup, private, 70+ tools in one place
Pricing
Free
Best for
Developers who repeatedly need quick format/encode/decode utilities
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Free, no-signup toolkit of 169 diagnostics for DNS, email authentication, TLS certificates, IP blacklists and security headers, built for self-hosters debugging mail and web infrastructure.
FreeNo sign-upData stays with you
What to know▼
How it works
runs DNS/SPF/DKIM/DMARC/TLS/blacklist/header checks plus in-browser dev utilities (JWT, cron, regex, hashing)
What's different
replaces juggling six separate diagnostic sites; some checks keep data local to your machine
Pricing
free to run checks; watchlists, alerts, embeddable badges and API available on top
Best for
self-hosters and sysadmins debugging DNS/email/TLS issues
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A free client-side calculator for developers doing bitwise math — AND, OR, XOR, NOT, and bit shifts — with step-by-step results in binary, decimal, and hex.
No sign-upNo tracking
What to know▼
How it works
enter values in any base, see results across all bases plus a 32-bit visualization
What's different
100% client-side, no signup, no tracking, includes calculation history
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A free bundle of 17 SEO and developer utilities — meta tag checker, OG preview, SSL/robots/sitemap validators, and text/code encoders.
Watch out · No sign-up, no ads.
FreeNo sign-upNo ads
What to know▼
How it works
17 tools including meta tag checker, OG preview for Facebook/Twitter/LinkedIn/Google, SSL checker, robots.txt and sitemap validators, structured data tester, JSON formatter, Base64/URL encoder-decoder, QR code generator, color converter, and password generator.
We check every product on this page once a day and record whether it still answers.
A single-page toolbox of 40 client-side developer utilities (JSON, Base64, JWT, regex, hashes, diff, and more), for developers, instead of separate bookmarked sites for each tool.
No sign-upNo ads
What to know▼
How it works
Runs entirely client-side with no ads or sign-up; includes formatters, decoders, converters, and testers.
Best for
Developers who want common conversion/formatting tools in one page without accounts or ads.
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15 free browser-based developer tools, JSON formatter, regex tester, encoders, generators, styled with a nostalgic Windows 95 look. Runs in the browser, not installed, nothing uploaded to a server.
FreeNo sign-upNothing to install
What to know▼
How it works
15 free developer and productivity tools — JSON formatter, regex tester, base64/URL encoders, UUID and password generators, unit and color converters — running entirely in the browser with a Windows 95-styled interface.
What's different
Nothing is uploaded to a server; everything runs client-side with no signup, ads or tracking.
Pricing
Free.
Best for
Developers who want quick browser-based utility tools without installing anything.
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A free collection of 200+ browser-based developer tools for formatting, validating, and converting JSON, XML, CSV, and similar formats without installing anything.
We check every product on this page once a day and record whether it still answers.
A privacy-first IP lookup and network diagnostics toolkit (DNS, WHOIS, WebRTC leak checks) with no account and no tracking, aimed at technical users rather than general consumers.
No sign-upData stays with you
What to know▼
How it works
Shows your public IPv4/IPv6 address, approximate location, ISP and ASN, and runs DNS, WHOIS/RDAP, reverse DNS and WebRTC leak checks.
What's different
No account, no marketing trackers, and no persistent raw IP storage in app-controlled systems.
Best for
Technical users who want network diagnostics without creating an account or being tracked.
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A free hub of 100+ browser-based tools spanning PDFs, images, SEO and developer utilities, no sign-up or downloads required. A general toolkit with a dedicated developer section, not built for one profession.
FreeNo sign-upNothing to install
What to know▼
How it works
A browser-based hub of 100+ tools for PDFs, images, text, developer utilities, SEO, calculators and generators, with no downloads or sign-up.
What's different
Runs entirely in the browser with no account or install, covering many task categories in one place.
Pricing
Free.
Best for
Students, developers, creators and professionals who want quick access to varied everyday tools without setting up accounts.
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A free collection of 50 client-side web utilities (code formatter, regex tester, image compressor, timestamp converter and more) that run entirely in your browser with no login required.
No sign-upData stays with you
What to know▼
How it works
A collection of 50 client-side web utilities — code formatter, regex tester, image compressor, Unix timestamp converter and more — that run entirely in the browser.
What's different
Runs 100% locally with no login required, so tools work instantly without uploading data.
Best for
Developers who want quick one-off utilities without creating an account or uploading files.
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110+ browser-based dev utilities — JSON, JWT, regex and SQL formatting and more — that run entirely client-side with no signup, uploads or server calls.
FreeNo sign-upData stays with you
What to know▼
How it works
A collection of 110+ developer utilities — JSON formatter, JWT decoder, regex tester, base64, diff checker, SQL formatter and more — that run entirely in the browser.
What's different
No uploads, no server calls, and no signup, unlike tools that process input server-side.
Pricing
Free.
Best for
Developers who want quick one-off formatting or decoding tools without sending data to a server.
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A Chrome extension that scans pages you visit and flags matching Homebrew packages you can install. Aimed at developers who use Homebrew on macOS, positioned as privacy-first.
Data stays with you
What to know▼
How it works
A Chrome extension that scans the pages you browse and detects matching Homebrew formulae and casks as you go.
What's different
Positioned as privacy-first, with the description noting it avoids uploading data.
Best for
Developers on macOS who use Homebrew and want relevant packages surfaced while browsing.
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A free collection of browser-only utilities — JSON formatter, regex tester, password generator, QR generator and more — for developers and quick technical tasks, with nothing ever uploaded to a server.
FreeData stays with you
What to know▼
How it works
A collection of browser-only tools - JSON formatter, password generator, regex tester, unit converter, QR generator and more - that run entirely client-side.
What's different
Nothing ever leaves the browser to a server.
Pricing
Free.
Best for
Developers needing quick technical utilities without uploading data.
We check every product on this page once a day and record whether it still answers.
Over 168 small utilities — converters, calculators, dev tools — running client-side in your browser with nothing uploaded, no account needed, and offline support once loaded.
FreeNo sign-upNothing to install
What to know▼
How it works
A collection of 168+ browser-based utilities — developer tools, image converters, text analytics, calculators, network utilities and more — that run entirely client-side.
What's different
Every tool runs in your browser so your data never leaves your device, works offline once loaded, and there's no account, paywall or ads on the tools themselves.
Pricing
Free.
Best for
Developers and everyday users who want quick one-off utilities without uploading data or creating an account.
