Tools for developers — No ads

25 match your filters — 24 of them answered our check today.

Watching this group for 20 days · how we check

This week5 new arrivals

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Doesn't mention AI25 Free17 No sign-up14 Works offline7 Open source2 Data stays with you7 No subscription2

FreeCustom.Email

Live

Instant, no-signup temporary email aliases with rotating domains to dodge blacklists, plus a public API for developers who want to build it into their own workflows.

FreeNo sign-upData stays with youOpen source

What to know▼

How it works: Creates custom, instant temporary email aliases (any inbox name) without sign-up, receiving emails in real-time from multiple rotating domains to avoid blacklists; also offers a public API and open-source frontend.
What's different: Rotating domains to avoid blacklists, plus no popups, timers, or tracking, unlike traditional temp mail tools.
Pricing: Free.
Best for: People needing disposable email for sign-up verifications or testing, and developers who want to build disposable email into their own workflows via the API.

Watched for 14 days · last checked 8d ago

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Best Website Template V.1.0

Live

A curated library of Webflow, Framer, and Shopify website templates, each scored by real designers and developers rather than paid rankings.

No ads

What to know▼

How it works: Filter by platform, category, price, and style; each template is tested and scored

Watched for 5 days · last checked today

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Cherry Time. Active Breaks

Live

A Pomodoro timer that guides desk stretches and eye-care breaks instead of passive countdowns, aimed at developers and remote workers.

No ads

What to know▼

How it works: A Pomodoro timer that guides desk stretches, quick movement, and eye-care routines during breaks instead of passive countdowns.
What's different: 100% private, no ads or tracking.
Best for: Developers and remote professionals.

Watched for 9 days · last checked 3d ago

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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.
Best for: Developers.

Watched for 7 days · last checked 5d ago

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DevToys

Live

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.

Watched for 12 days · last checked 6d ago

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HttpMaster

Live

A desktop HTTP testing and automation tool for developers, with request chaining, OpenAPI support and cURL generation. Runs fully offline, free, with no ads or subscription.

FreeWorks offlineNo subscriptionNo ads

What to know▼

How it works: A desktop HTTP testing environment for creating, automating and validating HTTP workflows, with OpenAPI support, request chaining, dynamic parameters, advanced response validation, and cURL generation.
What's different: Completely free and offline, with no ads, subscriptions, or feature restrictions, plus native ARM support.
Pricing: Free, with no ads, subscriptions, or feature restrictions.
Best for: Developers building and validating HTTP request workflows and APIs.

Watched for 13 days · last checked 7d ago

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HandyTools

Live

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.

Domain registered 9 months ago

FreeNo sign-upNothing to installData stays with you

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.

Watched for 13 days · last checked 7d ago

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Freepaycalc, A Free Freelancer's Friend

Live

A fee and margin calculator for freelance developers, designers and agencies that shows real take-home pay after gateway fees and currency conversion before you invoice.

Domain registered 27 days ago

FreeNo ads

What to know▼

How it works: Calculates international payment gateway fees, cross-border currency exchange splits, and true net take-home pay before you bill a client, including a Client Friction Multiplier to price out high-maintenance accounts.
What's different: Prices out difficult clients mathematically via the Client Friction Multiplier rather than through emotional negotiation.
Pricing: Free, ad-free.
Best for: Freelance developers, designers, and creative agencies billing international clients.

Watched for 13 days · last checked 7d ago

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AppCafe Tools

Live

A free collection of 40-plus no-signup web calculators and utilities covering personal finance, business paperwork, education, and developer tasks.

Domain registered 2 months ago

FreeNo sign-upNo ads

What to know▼

How it works: Runs instantly in the browser and spans personal finance (SIP, EMI, FD/RD, retirement, tax), business (GST, invoicing, quotations), education (CGPA, attendance), and developer tools (JSON formatter, JWT decoder, regex tester, cron builder).
Pricing: Free, no accounts, no paywalls.

Watched for 12 days · last checked 9d ago

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CalcLeaf

Live

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.

FreeNo sign-upNothing to installNo ads

What to know▼

Watch out: Built and maintained solo.

Watched for 2 days · last checked 1d ago

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SyntaxForge

Live

A free, ad-free text case-converter and formatter with a character-limit warning — a simple general-purpose utility the maker pitches at writers, students and developers alike.

FreeNo ads

What to know▼

How it works: A web-based text formatter with uppercase/lowercase toggles, a smart sentence-case algorithm, and an automated character-limit warning above 5,000 characters.
What's different: Ad-free with a dark mode, and a character-limit warning built specifically to prevent page crashes.
Pricing: Completely free.
Best for: Writers, students and developers who need a quick, no-clutter text case converter.

Watched for 15 days · last checked 2d ago

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Utility Hub

Live

A free, ad-free bundle of everyday web utilities (word counter, unit converter, password generator) in one place instead of juggling separate tabs — general-purpose despite the callout to developers and students.

No ads

What to know▼

How it works: A bundle of everyday web utilities — word counter, temperature converter, password generator and more — in one interface instead of separate tabs or sites.
Pricing: Free, ad-free.
Best for: Anyone who regularly needs small utilities like counters or converters and wants to avoid ad-heavy single-purpose sites.

Watched for 17 days · last checked 2d ago

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Rocket Web Tools

Live

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 installWorks offline

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.

Watched for 17 days · last checked 8d ago

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Quietbench

Live

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 youNo ads

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.

Watched for 18 days · last checked 2d ago

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RealTimeZones

Live

A fast, ad-free interactive timezone visualizer for coordinating across remote teams.

Domain registered 11 days ago

Data stays with youNo ads

What to know▼

How it works: An interactive timezone visualizer built for engineers and remote teams to coordinate across borders, designed to be ad-free, lightweight, and privacy-first.

Watched for 9 days · last checked 3d ago

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FreeMetaTools - Free Online Utility Tools

Live

A free bundle of 332 small web utility tools pitched as secure and privacy-first, though the listing gives no detail on what each tool does or how it handles data.

FreeNo sign-upData stays with youNo ads

What to know▼

How it works: A bundle of 332 free web utility tools, pitched as privacy-first.
Pricing: Free.

Watched for 15 days · last checked 9d ago

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QuickSEO Toolkit

Live

A free bundle of 17 SEO and developer utilities — meta tag checker, OG preview, SSL/robots/sitemap validators, and text/code encoders.

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.
Pricing: Free.
Watch out: No sign-up, no ads.

Watched for 10 days · last checked 7d ago

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Resonance Merge Defense

Live

A free in-browser puzzle game for developers to decompress by linking crystal towers into networks.

FreeNo sign-upNothing to installNo ads

What to know▼

How it works: An in-browser puzzle game where you link crystal towers into resonance networks and hold the Nexus.
Pricing: Free, no install, no ads, no account.
Best for: Developers decompressing between coding sessions.

Watched for 10 days · last checked 7d ago

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FakeCam

Live

A lightweight Windows app that streams a video or image file as your webcam feed into Zoom, Teams, Skype, Discord or Telegram, running fully offline with no account or tracking.

FreeNo sign-upWorks offlineNo subscription

What to know▼

How it works: A lightweight virtual webcam app for Windows that streams a video or image file as your camera feed into apps like Zoom, Teams, Skype, Discord and Telegram.
What's different: Runs entirely locally with no account, subscription, ads or tracking — download and run, 25MB portable, works offline.
Pricing: Free for Windows.
Best for: Windows users who want a virtual webcam feed for video call apps without an account or bloatware.

Watched for 18 days · last checked 2d ago

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Knocket

Live

A connections app centered on reaching someone with a single 'knock,' per its tagline 'One Knock. Every Connection' — the listing does not specify the mechanism beyond that.

FreeOpen sourceNo ads

Watched for 18 days · last checked today

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gogitype

Live

A typing practice tool that analyzes per-keystroke timing to find and drill your specific weak key patterns, for typists who want targeted improvement instead of a generic speed test.

Domain registered 1 month ago

FreeNo sign-upWorks offlineNo ads

What to know▼

How it works: Analyzes context-dependent weak spots (e.g. being slow at one letter only after another), builds drills from real words containing your problem patterns, and retires each drill once you've fixed it. Includes finger heatmaps, metronome rhythm training, multiplayer races, and a co-op arcade mode.
Pricing: Free, no ads, works offline, no account needed to try.

Watched for 13 days · last checked 10d ago

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QRKit

Live

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.
What's different: Also available on Android and as a Telegram bot.
Pricing: Free, no signup, no ads on the API.

Watched for 3 days · last checked 2d ago

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DukoTools

Live

100+ free offline browser tools spanning PDF, image, developer, finance and niche calculators, no ads or signup.

FreeNo sign-upWorks offlineNo ads

What to know▼

How it works: 100+ free offline tools spanning PDF, image, developer, finance, and niche categories, including a Zakat calculator, Pakistani electricity bill calculator, CNIC validator, cricket run rate calculator, and QR clipboard sync.
What's different: Works offline as a PWA, available in 5 languages.
Pricing: Free, no ads, no signup.

Watched for 3 days · last checked 1d ago

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Eleganote

Live

A local-first notebook combining handwriting, rich documents and PDF markup in one workspace, for students and professionals tired of juggling multiple note apps.

Works offlineData stays with youNo adsNo tracking

What to know▼

How it works: A local-first notebook combining handwriting (ink, pens, highlighters, shapes, lasso selection), rich text boxes, tables, images, audio memos, and PDF import with searchable text, all on a multi-page canvas organized with folders and tags.
What's different: Combines handwriting, structured documents and PDF markup in one workspace instead of forcing a choice between separate apps, without ads or tracking SDKs.
Best for: Students, professionals and creators who currently juggle multiple note apps and want handwriting, documents and PDF annotation in one place.

Watched for 18 days · last checked 2d ago

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Glooba

The private GLP-1 tracker. No account, all on-device.

No sign-upWorks offlineNo adsCan export my data

First seen today

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