Open-source tools — I'm wasting time

39 match your filters — 34 of them answered our check today.

Watching this group for 20 days · how we check

This week11 new arrivals

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Pandia

Live

Native desktop app for opening and editing multi-gigabyte JSON files instantly, for developers who hit size limits in browser-based JSON viewers.

FreeWorks offlineData stays with youOpen source
What to know▼
How it works
Opens huge files with no upload, shows JSON as Tree, Code, Grid, Graph, or Compare views, generates types for 9 languages.
What's different
Handles multi-gigabyte files offline where most JSON tools choke or require upload.
Pricing
Free
Watch out
Desktop-only (macOS, Windows, Linux).

Watched for 5 days · last checked today

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cngx

Live

A CLI that actually runs your test suite before letting an AI coding agent's merge-ready claim through, catching agents that say tests passed when they didn't.

Open source
What to know▼
How it works
A CLI that reads an AI coding agent's claim that tests passed, actually runs your real checks (pytest, npm test, go test, etc.), and blocks the merge if the agent's story doesn't match the command output.
What's different
The verdict comes from real command output, not a regex match on the agent's claimed text.
Best for
Developers using AI coding agents who want a guardrail against merge-ready claims that were never actually tested.

Watched for 16 days · last checked today

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OASIS-EASY

Live

An open-source AI agent platform for automating office and personal tasks — describe what you need in plain language and it builds a specialized assistant, no coding required.

Open source
What to know▼
How it works
An open-source AI agent platform where you create specialized 'office assistant' agents by describing what you need — e.g. one for the employee database, one for leave requests, one for expenses — and interact with them over WhatsApp, Telegram, or a native chat interface.
What's different
Open source and conversational (chat with agents like a colleague) instead of navigating a traditional ERP's pre-built interfaces.
Pricing
Open source.
Best for
Small offices wanting to automate workflows like HR, expenses or leave requests without learning a complex ERP UI.

Watched for 14 days · last checked 8d ago

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Randomeower

Live

An open-source discovery platform for random generators to find something fun or useful in seconds.

Domain registered 2 years ago

Open source
What to know▼
How it works
An open-source discovery platform of random generators for finding something fun, useful, or unexpected in seconds.

Watched for 5 days · last checked today

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TenTags Studio

Live

An open-source visual table editor with a Python DSL that exports to HTML, PDF, and Excel, for developers automating dashboards and reports without hand-writing layout code.

Open sourceCan export my data
What to know▼
How it works
A live preview grid stays bidirectionally synced with Python code via an AST; design visually or write code and both update.
Best for
Developers automating BI dashboards, KPI cards, Gantt charts, or heatmaps.

Watched for 7 days · last checked 1d ago

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Codewalk

Live

Reviews pull requests and maps code dependencies so developers can understand large codebases before refactoring, without indexing delay.

Domain registered 1 month ago

Open sourceSelf-hosted
What to know▼
How it works
Builds a dependency graph and semantic index, cites source in answers
What's different
instant PR reviews with no indexing step, open source and self-hostable
Pricing
open source
Best for
developers working in large or unfamiliar codebases

Watched for 6 days · last checked today

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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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Depheal

Live

An offline scanner that checks Python projects for known CVE vulnerabilities using local AST analysis, instead of a cloud-based dependency scanner.

Works offlineOpen source
What to know▼
How it works
Static AST analysis run entirely locally, with no internet connection or external dependencies required.
Pricing
Open source, published on PyPI.
Best for
Developers who want fast vulnerability scanning without sending code to a cloud service.

Watched for 7 days · last checked 1d ago

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OpenSpeedy

Live

Lets Windows gamers speed up or slow down single-player games in real time instead of needing a kernel driver.

FreeOpen source
What to know▼
How it works
Customizable hotkeys, five gear presets, and a hold-to-speed mode.
Pricing
free and open source

Watched for 1 day · last checked today

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Road Mapper

Live

Lets people turn a learning goal into a visual, level-based roadmap instead of a plain checklist.

FreeWorks offlineOpen source
What to know▼
How it works
Milestone levels with sub-task checklists that unlock in sequence; works offline or syncs via Supabase.
Pricing
free and open source (MIT)

Watched for 1 day · last checked today

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Plasma

Live

A free, open-source browser tool for designing WebGL gradient backgrounds, exportable as a raw shader, CDN script or no-code iframe embed — built for developers adding visuals to sites.

FreeOpen sourceCan export my data
What to know▼
How it works
Lets you design WebGL gradient backgrounds in the browser, customizing colors, flow speed, noise and grain live, then export as a raw WebGL shader, a lightweight CDN script, or a zero-code iframe embed link.
Pricing
Free and open-source.
Best for
Developers who want to add a customizable animated gradient background to a site without writing shader code from scratch.

Watched for 10 days · last checked 4d ago

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SDKCraft

Live

A free, open-source CLI and web tool that turns an OpenAPI spec into a ready-to-use client SDK in TypeScript, Python, Go, Dart or Java — a developer tool, not an API service.

FreeNo sign-upOpen source
What to know▼
How it works
Turns an OpenAPI spec into a production-ready SDK in TypeScript, Python, Go, Dart or Java, with a code preview, ZIP download, a CLI (npx sdkcraft), API change detection, and an AI documentation generator.
What's different
Free, open source and requires no signup.
Pricing
Free and open source.
Best for
Developers who need a client SDK generated from an existing OpenAPI spec instead of writing one by hand.

Watched for 13 days · last checked 7d ago

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Yerd

Live

An open-source, Docker-free local PHP environment for macOS and Linux — automatic HTTPS, per-site PHP versions, zero-config sites. A direct alternative to Laravel Herd for developers.

Open sourceNo subscription
What to know▼
How it works
A local PHP development environment: park a folder and every project inside becomes instantly live at .test; issues per-site HTTPS certificates automatically; installs multiple PHP versions side by side, pinned per site; runs MySQL, MariaDB, PostgreSQL, Redis and an SMTP catcher as native processes supervised by one daemon; streams Laravel dump()/dd(), queries, jobs and requests to a dedicated window.
What's different
Open-source, rootless and Docker-free — a direct alternative to Laravel Herd, MIT licensed with every feature included.
Pricing
Open-source, no subscription.
Best for
macOS and Linux developers running local PHP/Laravel projects who want to avoid Docker.

Watched for 18 days · last checked 2d ago

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LineSolv

Live

An open-source desktop calculator that parses phrases like '20% of 150' plus unit conversion and graphing, a general tool despite the developer-flavored tech stack.

Open source
What to know▼
How it works
A cross-platform desktop calculator that parses natural-language phrases like '20% of 150' or '5 kg in pounds', with unit conversion, function graphing and step-by-step evaluation.
What's different
Built with Go + Wails for a roughly 25 MB binary that starts instantly, versus heavier calculator apps.
Pricing
Free and open source, MIT licensed.

Watched for 15 days · last checked 9d ago

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Branda

Live

Paste a company's URL and it auto-generates on-brand ad creatives for LinkedIn and X using that brand's logo, colors and copy style, no login or design skills needed. Open-source and self-hostable.

No sign-upOpen sourceSelf-hosted
What to know▼
How it works
You paste a website URL and it pulls the brand's logo, colors and campaign imagery via Context.dev's Brand API, reads the homepage to match the copy tone, then generates ready-to-ship ad creatives for LinkedIn and X.
What's different
No login or asset upload required, and it's open-source and self-hostable rather than a closed SaaS tool.
Best for
Marketers who need on-brand ad creatives quickly without design skills or manually assembling brand assets.

Watched for 13 days · last checked 7d ago

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Ortu

Live

A cross-platform clipboard manager with full history, search and secret masking for anyone who copy-pastes constantly - handy for developers managing API keys, but useful for any heavy copy-paste workflow.

No sign-upWorks offlineOpen source
What to know▼
How it works
Remembers everything you copy - text, images, files - across macOS, Windows and Linux, with full-text search, a paste stack, secret masking with encryption, and smart auto-grouping.
What's different
Runs 100% locally with no account, and is open source.
Pricing
Not stated beyond being open source.
Best for
Developers and anyone who copy-pastes constantly, including people managing API keys via clipboard.

Watched for 16 days · last checked 10d ago

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FlashCard

Live

A free, open-source Mac flashcard app modeled on Anki but with zero setup — no account or cloud, cards stay on your Mac, fully keyboard-driven review.

FreeNo sign-upWorks offlineOpen source
What to know▼
How it works
Brings spaced-repetition flashcards to macOS with fully keyboard-driven review (Space to reveal, arrows to grade) and CSV import.
What's different
Zero setup compared to Anki — no account, no cloud, no scheduler to configure; cards stay on your Mac.
Pricing
Free and open source (MIT).
Best for
Mac users who want Anki's spaced-repetition power without its setup complexity.

Watched for 16 days · last checked 10d ago

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Capsule - Easy File Transfers

Live

Encrypted, self-destructing file transfers via a memorable three-word link, usable from the browser, terminal or Android app; open source and self-hostable, aimed at technical users rather than a dedicated mobile app.

Open sourceSelf-hosted
What to know▼
How it works
Upload a file from the browser, terminal, or Android app and share a link built from three readable words; the file is end-to-end encrypted on-device using the age format with a BIP39 mnemonic passphrase, and deleted from the server an hour later.
What's different
True end-to-end encryption across all clients (web, CLI, Android) with fully interoperable encrypt/decrypt between them, plus open source and self-hostable.
Best for
Technical users moving a file between devices or people who want it gone after an hour, rather than a permanent hosted link.

Watched for 18 days · last checked 2d ago

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Schema Cast

Live

An open-source tool that generates and keeps JSON schemas in sync with your code, for developers building and validating APIs. It doesn't offer its own API despite the framing.

Open source
What to know▼
How it works
Automatically generates JSON schemas from your code and keeps them synchronized with your models.
What's different
Open-source and focused on keeping schemas in sync with code changes rather than a one-time generation.
Best for
Developers building and validating APIs who need schemas to stay current with their models.

Watched for 15 days · last checked 9d ago

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Screenshot beautifier

Live

Free browser tool that adds device frames, gradients, and shadows to screenshots without uploading them anywhere.

FreeNo sign-upOpen sourceCan export my data
What to know▼
How it works
Runs entirely in-browser via html2canvas, no server uploads
What's different
100% client-side processing, open source
Pricing
free, no signup

Watched for 4 days · last checked 2d ago

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PWAA

Live

Packs an entire web app or documentation site into a single offline ZIP file that runs without breaking on JS/CORS restrictions, unlike typical offline export formats.

Works offlineOpen source
What to know▼
How it works
Maps a ZIP to memory and spins up a local HTTP server so the packed app 'thinks' it's online
What's different
Open source, avoids CORS breakage that plagues other offline formats

Watched for 5 days · last checked 4d ago

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RPG NPC Generator

Live

Generates complete D&D NPCs with AI portraits and optional 5e stats in seconds, fully offline and open source, free on Google Play, a tabletop game-master tool.

FreeWorks offlineOpen source
What to know▼
How it works
Rolls a complete D&D NPC — race, profession, alignment, personality, motivation, languages and name — with any trait re-rollable, an AI-generated portrait built from those traits, and optional 5e combat stats (abilities, AC, HP, CR).
What's different
Offline-first and 100% open source, with roster backups including portraits.
Pricing
Free on Google Play.
Best for
Dungeon masters who need a believable NPC on the fly at the table.

Watched for 13 days · last checked 11d ago

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VerifiedTools

Live

A directory of tools that are genuinely free with no forced signup, re-checked daily to catch any that started requiring an account. Solves the annoyance of 'free' tools that quietly ask for a credit card.

FreeNo sign-upOpen source
What to know▼
How it works
A curated, open-source directory of genuinely free tools, with an automated bot that pings every tool daily to verify it's still free and hasn't added a forced login wall.
What's different
Daily automated re-verification, so tools that quietly add a signup requirement get caught and removed.
Pricing
Free.
Best for
People looking for tools that are genuinely free without hidden account or credit-card requirements.

Watched for 13 days · last checked 11d ago

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BigJSON

Live

A free, open-source desktop app for opening and searching multi-gigabyte JSON files on macOS and Windows in seconds - a free alternative to paid tools like Dadroit.

FreeOpen sourceCan export my data
What to know▼
How it works
Opens and searches multi-gigabyte (2-3 GB) JSON files on macOS and Windows, with a tree viewer, regex search over keys and values, subtree extraction, export to CSV/XML, and multi-file union.
What's different
Free, open-source alternative to paid large-JSON viewers like Dadroit, with no cost or usage limits, including for commercial use.
Pricing
Free.
Best for
Developers who regularly need to open and search very large JSON files.

Watched for 15 days · last checked 2d ago

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Dungeon Mastron

Live

An open-source tool for building choose-your-own-adventure games with a visual node editor, playable in browser or loaded onto a 3D-printed Raspberry Pi console. You can also generate one via ChatGPT.

FreeOpen source
What to know▼
How it works
A free, MIT-licensed open-source platform for building choose-your-own-adventure games with a visual node graph editor, playable instantly in the browser or exportable via a ChatGPT prompt template, and loadable onto a 3D-printed Raspberry Pi cartridge console.
Pricing
Free and open source under the MIT license.
Best for
Developers and hobbyists who want to build and share interactive fiction games, including onto physical Raspberry Pi hardware.

Watched for 16 days · last checked 2d ago

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ICTDesk

Live

An open-source live chat platform with an AI chatbot that auto-answers common visitor questions and a shared team inbox, aimed at customer support teams wanting to cut repetitive workload.

Open source
What to know▼
How it works
An open-source live chat platform where an AI chatbot crawls your website to build a knowledge base and auto-answers common visitor questions, backed by WebSocket-powered real-time chat, a shared team inbox, and real-time visitor intelligence (device, browser, location, page and conversation history).
What's different
Open source and self-hostable, combining AI auto-replies with full visitor intelligence in one tool rather than separate live-chat and analytics products.
Best for
Customer support teams who want to cut repetitive question volume with an AI chatbot while keeping a shared inbox for complex cases.

Watched for 18 days · last checked 11d ago

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YouTube Creator Mindset Engine

Live

A free, open-source AI tool that generates YouTube titles, hooks and scripts modeled on top creators' styles, for YouTubers wanting a quick strategy starting point, not real coaching.

FreeOpen source
What to know▼
How it works
A fine-tuned Llama-3.2-1B model generates YouTube titles, hooks and scripts modeled on the style of specific top creators (e.g. MrBeast, Ali Abdaal, MKBHD) — you pick a style and it produces a viral framework.
What's different
Free and open-source, built on a self-hosted fine-tuned model rather than a wrapper around a paid API.
Pricing
100% free, open-source.
Best for
YouTubers wanting a quick starting framework for titles and hooks, not a coaching service.

Watched for 18 days · last checked 9d ago

Details →

gitspark

Live

Finds real beginner-friendly open-source GitHub issues and explains them with AI, no account needed.

No sign-upNothing to installOpen source
What to know▼
How it works
Fetches beginner-friendly GitHub issues live, filtered by language and contribution status, and explains them with AI-powered explanations; issues can be saved locally.
Watch out
No signup, no backend, no account needed.

Watched for 3 days · last checked 2d ago

Details →

CoolDesk

Live

A Raycast-style launchbar that groups your tabs, apps, links and notes into project workspaces instead of one generic list, for people juggling several projects through their full lifecycle.

Domain registered 11 months ago

No sign-upOpen source
What to know▼
How it works
A launchbar for browser and desktop that organizes tabs, apps, links and notes into project workspaces, with AI Spotlight Search to jump to anything instantly.
What's different
Organizes around project lifecycle rather than being a generic launcher like Raycast, and pulls native desktop apps into the same workspaces via a companion app.
Best for
People juggling several projects who want their tabs, apps and notes grouped by project instead of scattered.

Watched for 13 days · last checked 7d ago

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Dynamic Feed

Live

A single API call returns live, cryptographically signed data across 87 sources so AI agents and software can verify what they're consuming — a developer-facing trust layer, not a consumer app.

No sign-upOpen source
What to know▼
How it works
A single keyless API call returns structured JSON for 87 live tools across 19 verticals; each datapoint carries its source, licence, timestamp and an Ed25519 signature, optionally Bitcoin-anchored.
What's different
Data is cryptographically verifiable rather than just scraped and cited, and it works without signup or an API key via an MCP endpoint or batch POST.
Best for
Developers building AI agents or software that need to independently verify the live data they consume.

Watched for 17 days · last checked today

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Drumbeats

Live

Never miss a beat! Unified monitoring for cron jobs, workers, and uptime.

FreeOpen source

First seen today · last checked today

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FindAlternate

Live

Discover and compare software alternatives

FreeOpen source

First seen today · last checked today

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Free Finance Tools

Live

A free hub of 25+ e-commerce and freelance calculators (Etsy, Amazon FBA, Shopify, Stripe profit) with a built-in AI helper.

FreeOpen sourceNo ads
What to know▼
How it works
25+ calculators for calculating true profit on Etsy, Amazon FBA, Shopify and Stripe sales, with saved calculations and an open-source AI helper called Penny.
Pricing
Completely free, no ads or paywalls.
Best for
E-commerce sellers, freelancers and small businesses.

Watched for 3 days · last checked 2d ago

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WebVox

Live

Reads web articles, blogs and pages aloud in a clean, ad-free listening mode using Android's built-in text-to-speech. A general read-it-later/listen tool for anyone, not developer-specific despite the tag.

No sign-upOpen source
What to know▼
How it works
Converts web articles, blogs and pages into a clean reader-mode layout and reads them aloud using Android's built-in text-to-speech engine, stripping ads, popups and banners; users paste a URL or share directly from the browser to start.
Best for
Anyone on Android who wants to listen to web articles instead of reading them, not developers specifically despite the extraction-tool angle.

Watched for 18 days · last checked 2d ago

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EduScreen

Free & open-source screening for ADHD, Dyslexia & more.

FreeOpen source

First seen today

Details →

Multi-Agent Content Engine

An open-source, bring-your-own-key multi-agent tool that turns a topic into X, LinkedIn, and Instagram social campaigns.

FreeOpen source
What to know▼
How it works
Uses CrewAI and Gemini 3.1 Flash-Lite to run a sequential pipeline of agents — a Researcher extracting insights and personas, a Copywriter structuring X threads/LinkedIn posts/IG captions, and an Editor polishing flow.
What's different
Open-source and bring-your-own-key, built with Streamlit.
Pricing
Free if you paste your own Gemini API key.
Best for
Marketers and teams turning a topic into social campaigns.

Watched for 13 days · last checked 7d ago

Details →

TuxPaint Online

A browser version of the classic kids' drawing program, with no installation required.

Domain registered 6 years ago

Nothing to installOpen source
What to know▼
How it works
Runs the classic open-source drawing program entirely in the browser, keeping artwork on your own device, with brushes, stamps, shapes, text tools, and magic effects.
What's different
No installation required, unlike the original desktop program.
Best for
Kids, families, teachers, and classrooms.

Watched for 12 days · last checked 1d ago

Details →