Virtual whiteboard for sketching hand-drawn like diagrams
Useful tools for work, study & creative projects
Free online tools.
Open-source possibilities.
Explore 310 free online tools and open-source projects for work, study, design, writing, privacy, and coding. Search by category, tags, or GitHub popularity to find the right tool for your next task.
310TOOLS
10CATEGORIES
A thoughtful collection, ready to explore.
THE DIRECTORY
Find your next favorite tool.
Browse 310 open-source and browser-first projects, picked for getting useful work done.
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Featured
28 PICKSThe open-source CapCut alternative
Open-Source API Development Ecosystem. Alternative to Postman, Insomnia
A privacy-first, open-source platform for knowledge management and collaboration
Free, simple, and intuitive online database diagram editor and SQL generator
Community-built comprehensive 2D content creation appplication for graphic design, digital art, and interactive real-time motion graphics powered by a node-based procedural graphics engine
Ebook reader designed for immersive and deep reading experiences
Full-featured markdown editor
High-performance In-browser LLM Inference Engine
Powerful, privacy-first, client-side PDF toolkit that is self hostable and allows you to manipulate, edit, merge, and process PDF files
Modern relational spreadsheet. It combines the flexibility of a spreadsheet with the robustness of a database
Transfer Files Cross-Platform. No Setup, No Signup.
HTML/JS based tool for creating, testing, and learning about Regular Expressions
Collaborative office suite, end-to-end encrypted and open-source.
🎨 Classic MS Paint, ＲＥＶＩＶＥＤ + ✨Extras
A tool to enforce privacy & security best-practices on Windows, macOS and Linux, because privacy is sexy
Open source CapCut alternative
A 3D CAD running entirely in the browser
Free full-featured web-based audio & waveform editing tool
A free, browser-based screenshot editor. Beautiful backgrounds, device frames, 3D effects, animations, and video export. No signup, no watermarks.
An open-source cross-platform alternative to AirDrop, but works in LAN only
Ableton-style music composer for the web
Run classic Windows games in your browser
ATS-Friendly Resume Builder
Dependency-free WebGL studio for generative backgrounds and live embeds
seamless torrent streaming and file sharing
Play, visualize, learn, and export your MIDI music as gorgeous piano-roll videos, entirely client-side with zero uploads.
SpotMP3 is a free Spotify downloader that saves songs, playlists and albums as high-quality MP3s.
Editor’s picks
30 PICKSprovides a free, zero-install Microsoft Visual Studio Code experience running entirely in your browser, allowing you to quickly and safely browse source code repositories and make lightweight code changes
Provides a zero-install Godot enviroment that runs entirely in your browser.
An interactive online platform for visualizing algorithms from code and learning algorithm behavior through animations.
Collection of handy online tools for developers, with great UX
Easily and securely send things from one computer to another 🐊 📦
A browser-based “cyber” workbench for encoding, decoding, encryption, compression, hashing, parsing, and data analysis recipes.
File-converter fully in-browser
Online Subtitle Editor
Easy-to-use sprite editor. It can be used to create game sprites, animations, and pixel-art
The largest collection of free stuff on the internet!
Create pixel art in your browser
A configurable browser-based diagramming and whiteboarding tool for flowcharts, UML, network diagrams, ER diagrams, BPMN, and more.
"The last Markdown editor, ever."
A browser-based UI prototyping tool for designing Material 3 Expressive app screens, linking interactive flows, and generating prompts for AI coding tools.
Powerful SVG-Editor for your browser
Template designer, PDF viewer, and powerful generation capabilities. Create custom PDFs effortlessly
Spreadsheet for real-time collaborative editing
Simple and easy-to-use SVG editor experience
A browser-based electronic circuit simulator with animated schematics, example circuits, and editable components.
A CAD application built with Rust. 2D/3D drawing, DWG/DXF support, and GPU-accelerated rendering
next-generation web-based Digital Audio Workstation (DAW)
A directory of direct links to delete your account from web services.
An interactive browser-based viewer for KiCad schematics and PCB boards.
Markdown editor with live preview
A web client for the BRouter routing engine, providing OpenStreetMap-based route planning with profile customization and route export.
A privacy-first, end-to-end encrypted alternative to Google Docs for rich document editing.
📒 An offline capable Notepad PWA
Visualize code execution step-by-step to better understand programming concepts and debugging.
Computer Controlled Rhythmic Groove Machine
dsheets.new is alternative to google sheets & excel.
Interactive roadmaps, guides and other educational content to help developers grow in their careers
A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev
#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere
Real-time global intelligence dashboard. AI-powered news aggregation, geopolitical monitoring, and infrastructure tracking in a unified situational awareness interface
Next-gen knowledge base that brings planning, sorting and creating all together
A simple drawing/whiteboarding tool
visualization application that transforms various data formats, such as JSON, YAML, XML and CSV into interactive graphs
media downloader that doesn't piss you off. it's friendly, efficient, and doesn't have ads, trackers, paywalls or other nonsense.
Create and share beautiful images of your source code
Share text between devices securely with QR code or URL
A modern ebook manager and reader
Simply beautiful open-source icons
Image compression web app that reduces image sizes through numerous formats
Free SVG icons for popular brands. 3000+ icons, public domain, no signup.
Beautiful & consistent icon toolkit made by the community
Browser-based 3D room planner for designing and testing interior layouts.
A set of free MIT-licensed high-quality SVG icons for UI development.
A set of over 6000 free MIT-licensed high-quality SVG icons for you to use in your web projects.
The most customizable typing website with a minimalistic design and a ton of features. Test yourself in various modes, track your progress and improve your speed
FFmpeg for browser, powered by WebAssembly
Match command-line arguments to their help text
Creates interactive mind maps from Markdown with a live editor and visualization
An open-source, browser-based directory of OSINT tools and resources organized by investigation category.
Share quick reference cheat sheet for developers
Collection of powerful web-based tools for everyday tasks
Open Source Palantir Alternative
Find out the cost of adding a new frontend dependency to your project
A polyglot web converter
The customization marketplace for Windows and programs
A web interface to create custom vector-based visualizations on top of RAWGraphs core
A collection of over 1800 curated icons for services, applications and tools, designed specifically for dashboards and app directories
Open source neutral style icon system
The homepage of Phosphor Icons, a flexible icon family for everyone
Stay motivated and show off your contribution streak! Display your total contributions, current streak, and longest streak on your GitHub profile README
Edit, preview and share mermaid charts/diagrams. New implementation of the live editor.
A web tool to explore the ASTs generated by various parsers.
Shrink SVG sizes dramatically
A low poly 3D model editor
An application for drawing ASCII diagrams
Online editor to create and manipulate SVG paths
WebRTC video conferencing platform built on peer-to-peer (P2P) architecture for fast, secure real-time communication with end-to-end privacy
An open source icons library with 1600+ icons, supporting React, React Native, Flutter, Vue, Figma, and Framer.
Open source emojis for designers, developers and everyone else!
Collaborative JavaScript Debugging App
diagram rendering service that generates diagrams from text using tools like Mermaid, PlantUML, Graphviz, and more
An MCP server plus a CLI tool that indexes local code into a graph database to provide context to AI assistants
Cartographic poster engine
Truly universal online file converter
Turn PDFs and documents into realistic scanned copies, add watermarks, stamps and metadata in a few clicks, with all processing done locally for maximum privacy.
Create Anime Characters
Easily generate flowcharts and diagrams from text
Professional-grade background patterns and gradients for your websites and apps
Share expenses with your friends and family
Structured SVG editor
6,100+ SVG icons. Brands, AWS, Azure, GCP, and more. Search, copy, ship.
Your GitHub, rated out of 99 ⚽
A curated library of premium React micro-interactions and transition components powered by Motion.
Tool that lets you quickly generate clean, professional app icons using customizable shapes, gradients, and glyphs
Learn React, Redux, Node.js, MongoDB, GraphQL and TypeScript in one go
Professional video editing, zero installation. Create stunning content in your browser
Minimalistic web application designed for sending end-to-end encrypted notes and files
Powerful, minimalistic, cross-platform, opensource note-taking app
Configures mouse DPI, polling rate, buttons, and RGB
Takes CSV or tab-delimited data from Excel and converts it into several web-friendly formats, include JSON and XML.
Reverse engineer any repo into it's original prompt
An online Dart editor with support for console, web, and Flutter apps.
Minimal and formal résumé (CV) website template for print, mobile, and desktop
Finds larger/original versions of images and videos
design editor for posters, layouts, social graphics, and other canvas-based compositions
Send fully encrypted secure notes or files with custom expiration
A pixel Art & Animation Creation Tool Built using HTML5 Canvas
App for modular conversion, encoding, and encryption
A super simple tool to convert your SVG's to 3D models
Merge, split, compress, and edit PDFs 100% locally on your device
Powerful video editor right in your browser
Online tools provides md2, md5, sha1, sha2, sha512, bas64, html encode / decode functions
A ROM patcher made in Javascript
Online SQLite playground
A tool for anonymizing photographs taken at protests
A terminal theme designer
Dashboard Icons provided by selfh.st
End-to-end encrypted peer-to-peer file transfer and chat in the
Image metadata and forensics analysis tool
A collection of small, low stakes and low effort tools
Transform any GitHub profile into a stunning portfolio in seconds.
Generate QR code easily
Online webgl photo editor with effects, filters and cropping
Secure and user-friendly pastebin with end-to-end encryption and paste history.
web-based application (a toolkit), that used to analyzing and recovering damaged QR Code
Text-to-speech document reader built with Next.js for EPUB, PDF, TXT, MD, and DOCX with multilingual, synchronized read-along playback
Transfer files between machines through the web, through a CLI, or both fully end-to-end encrypted. Made by the dev of croc file transfer
checklist to help you plan, build and grow your design system
Easy-to-use, multi-track audio editor and recorder
200+ layered, atmospheric gradients built from soft blend modes
a full server-side Datasette Python web application directly in your browser
Gain deeper insights into your favourite open-source GitHub repositories. Explore star trends showing daily stats.
Minimalist, end-to-end encrypted, self-hostable file and note sharing.
collection of cinematic video hero sections Browse, preview, copy & download production-ready backgrounds - instantly
A tool for planning drawer organization using the Gridfinity modular storage system
Say goodbye to bulky files! Crush video sizes by 90% with no quality loss, even offline
Modern and feature-rich painting app for the web
The Component Gallery is a collection of components from the best Design Systems.
Entropic Editor for Artists
A web editor to write, run and learn assembly code (X86, MIPS, RISC-V, M68K)
Font editor, made for hobbyists and typeface design beginners
A pomodoro web app with PIP mode, white noise generation, tasks and more!
Write a note, get a link, share it, and the note self-destructs the moment it's read
Share text & logs with a short URL
Share files quickly and securely without relying on cloud servers
WebRTC based p2p file transfers in your browser
End-to-end encrypted file transfer
Design floor plans in an intuitive 2D editor, then instantly preview them in a fully navigable 3D view
A suite of random, mostly weird, generative art tools!
Progressive resume builder which works offline
Learn from 30 historical figures through stories, dialogues, and AI conversation. Nonprofit, no signup.
AI inference, packed simply. A blazing-fast, zero-dependency WebGPU runtime to run GGUF models directly in the browser
Analyze huge log files (10GB+). Features JSON prettifier, regex filtering, and bookmarks.
Edit diagrams from textual descriptions!
Design organic, flowing gradients by sculpting a bezier-patched lattice in real-time WebGL. Export to images, video, code, or as editable project files
Curated protocols, assets, and tools for the modern archivist.
Real-time ASCII art camera that transforms your webcam feed into glowing terminal aesthetics. Built with React + Canvas API
Plain text editor in the browser.
Removes metadata from supported formats in-browser using WASM
GitHub Gists are the fastest way to share code, notes, and snippets. But they look terrible. This fixes that.
A web platform for modelling and solving linear optimization problems
A serverless, zero-setup Python notebook environment
Lightweight, local-first habit tracker designed to respect your privacy
helps developers, especially beginners in open source, understand large repositories faster without getting lost trying to figure out where to start
App for quickly sharing links, text snippets, and files.
Private end-to-end encrypted pastebin
Real-time app for conducting a remote sprint retrospective meeting
Redact the non essential info from the spanish National Identification Document
Provides a board for quick little notes post-it like
WSAM powered frappe playground running entirely in the browser.
Distraction free YouTube client without any recommendations, no shorts, no auto-play, no home screen videos, no now trending feeds
Build a professional CV in a few minutes and download it as a PDF
An online creation tool for LALR and LR(1) parsers to learn how language theory works
An interactive resume builder with templates. Paste a job link and AI rewrites your resume to match
resume builder designed for professionals who value privacy, flexibility, and control over their data
Verilog simulator built by compiling Icarus Verilog to WebAssembly. No server, no install: edit, compile, simulate, view waveforms, and synthesize to a gate-level or RTL schematic
web application that provides a suite of image processing tools
Bi-directional visual editor for Mermaid.js flowcharts
Convert documents without leaving the browser.
A tool for sanitizing logs, stack traces, config snippets, and terminal output before you paste them into GitHub issues, support tickets, Slack, or AI chats.
Run ffmpeg directly in your browser with a terminal-like interface.
Turns TypeScript algorithm functions into step-by-step visual stories
Digital business cards you actually own
Fast file-transfer solution with support for Tor, and LAN messaging
Clear, in-depth guides to everything from how a computer boots up to how the internet, databases, and AI really work
Control your Razer device's RGB, effects, and settings
Procedural texture and volume generation toolkit for volumetric rendering, terrain generation
A live AsciiDoc editor with real-time preview, syntax highlighting, and export functionality.
Dynamic Job Search RSS Feed Generator
Query files like CSV, JSON, and Parquet directly in the browser
A web app that enables you to search the Apple App Store in your browser and view app meta-data.
Modern, privacy-focused, peer-to-peer file transfer application built with WebRTC with screen-share and chat functionality
A workbench of 52 everyday utilities (PDF manipulation, image processing, dev tools)
An interactive tool for visualizing relational database schemas in 3D.
Web Serial Plotter with as much customization as possible
3D satellite tracker with orbit visualization, pass predictions, and antenna rotator control (GS-232, EasyComm, Hamlib)
WebRTC peer-to-peer file transfer
Allows you to see deleted reddit posts, private profiles and profile stats (top subreddits, activity heatmap, common words used)
A minimal PDF. Note: doesn't modify existing PDF text.
A collection of open-source developer tools for everyday tasks - encoders, decoders, generators, converters, and more.
Go-to resource for gaining insights into pentesting, bug bounty hunting, and scripting
Simple and modern web-based logic gate simulator
A free, browser-based tool for analyzing, querying, and repairing broken or oversized CSV files
Get the highest resolution favicon for any domain or look up a service icon by name.
A markdown to PDF converter & live previewer
A huge, searchable collection of 200+ local-first developer tools for everyday text, data, and format tasks.
collaborative whiteboard for drawing and note-taking
Text editor that highlights poor wording in real-time - and makes you write better
Daggerheart GM Screen
Datamosh your photos and videos, glitch effects in sync with music.
Configuration builder/editor for opencode.
Recording looper and analysis tool designed for musicians who want to transcribe music or learn songs by ear
feature-rich color picker and analysis tool
A level and IGCSE grade boundary lookup
Create a full color palette from a base color and export it to CSS, Tailwind and SVG
Link words across a translation, then export the diagram.
Convert and inspect fonts locally in your browser
Download Maven JAR dependencies and transitive dependencies as ZIP
Pixel-perfect dithering utility. Drop an image, dial in the settings, ship a dither
Local image and video filters with shaders, on an infinite canvas
A client-side web utility to scale, crop, and tile images onto sheets of paper for printing at exact real-world dimensions.
A Markdown reader that reads .md files & folders
General developer tools
Secure, temporary, and minimal file sharing with zero-knowledge encryption
A visual cubic-bezier curve editor for crafting custom CSS easing functions
static, explanation-first quiz catalog for self-learners, with public quizzes, private local imports, and an AI-first quiz format
Generate images, compress photos, upscale pictures, and remove backgrounds
A simple collection of video processing tools
AI writing assistant that lives entirely in your browser
Easly connects 2 browsers to transfer files
Free URL shortener that lets you create branded short links with custom domains, QR codes, click analytics, and an easy-to-use dashboard
Use Ai models right now, for free and privately, without setup.
Browser-based parametric 3D CAD modeler with AI-powered tools and native Inventor file parsing
Compress, convert, resize, and optimize images & SVGs offline, all in your local browser. No uploads, no limits, no account.
Draw easing curves on a visual graph, preview them on a live shape, and export to CSS, GSAP, SVG, JavaScript, Flutter, Jetpack Compose, iOS and Android.
A modern web application for looking up E-number food additives with comprehensive data from Open Food Facts
DDL into interactive entity-relationship diagrams instantly
View and analyze FIT/GPX tracks right in the browser: bulk upload, map, summary, metrics and charts
HTML, CSS, JS editor & playground
Helps analyze how text is split into tokens for different GPT and OpenAI model encodings, and estimate cost impact per model.
Easily transform any image into ASCII/Unicode art
Design & Graphics
?
A notepad for the web written in Flutter
Writing & Docs
CC BY-NC-SA 4.0
Convert any Unicode symbol, emoji, or glyph into a custom favicon
Design & Graphics
MIT
Enter your stats once and get a full picture of your health: what your numbers mean, where your goals should be, and the knowledge to back it up
Utilities
?
A Dynamic HTML Email Builder from templates
Productivity
MIT
Stock market simulator for practicing trades with virtual money across stocks, crypto, forex, and futures.
Education
?
Format code for 40+ different languages & minify for 9 different targets.
Development
GPL-3.0
Free supplemental English QWERTY typing practice with 24 lessons, on-screen key guidance, WPM and accuracy feedback, submitted by an AI assistant authorized by Hello Keyboard’s operator.
Free printable coloring pages and a no-login activity studio for mazes, word searches and custom activity books, with optional paid AI image generation.
Free browser-local tools for PDFs, images, text, JSON and data, with no account or installation required.
kannso. is a free, ad-free online Kanban board that helps individuals and small teams organize tasks, projects, and notes directly in their browser.
A free browser tool for creating printable multiplication charts and worksheets.
Free phonetic Telugu Unicode typing in your browser, with online spelling suggestions, copy, TXT and editable DOCX downloads.
MangaTranslate by Ficory LLC translates manga/comic images and PDFs, with editing tools; limited free web credits and paid plans are available; this vendor nomination is submitted by an AI assistant for the product provider.
Early-stage MIT self-hosted AI creative canvas for text, image, video and audio workflows with user-configured providers; software is free, but hosting and external model usage may cost money.
Design & Graphics
MIT
Create an Islamic marriage biodata with guided fields, a live preview and PDF export through your browser’s print dialog, free with no signup and drafts saved locally.
Free browser-based tools to convert EML and MSG emails to PDF, add PDF bleed and crop marks, and remove crop marks without signing up.
Free, no-login photo planner for manual shot lists, scouting notes and gear checklists, with print/download controls and a link to the separate Asterfold iPhone app, submitted by its publisher Honest Little Apps.
Free browser calculator estimates gross shift pay from hours, breaks and a user-set overtime threshold; it links to the optional EarnCheck iPhone app.
A free image compressor that processes selected images locally in your browser without requiring an account.
Submitted on the owner’s behalf: Easy Morse Code is a free, no-account browser tool for translating text and Morse symbols, listening to Morse audio, and exploring alphabet references and practice activities.
A free Japanese-language color reference and browser toolkit for named colors, palettes, image color picking, HEX/RGB/HSL conversion, CSS gradients and text/background contrast checks.
I work on ToolJovia; this free browser tool turns up to 10 photo issues into a PDF report, CSV checklist and editable JSON without an account or uploading files.
A free website for comparing hosting, VPS, cloud, dedicated server and domain prices, with a website/IP lookup to identify hosting and network providers.
Submitted on the owner’s behalf: a free browser calculator for combining room areas in imperial or metric units and planning flooring with a chosen waste allowance, without an account.
Free community documentation for Codex Router, with installation guides, model-provider setup and troubleshooting for the open-source local proxy used with Codex App and CLI.
Submitted on the owner’s behalf: a free browser tool that converts text into small caps, superscript and subscript Unicode styles without an account; character support varies across apps.
Overlay Cat is a currently free Bongo Cat keyboard, mouse and gamepad input overlay with a browser preview and desktop app for OBS and TikTok LIVE Studio.
Recommended on behalf of its publisher, Space Planner is a free, no-sign-up browser tool for comparing small rectangular bedroom furniture layouts in 2D and 3D using your own measurements, with illustrative fit checks and browser-local plans.
Free multilingual browser tool for timed manual click counting and clicks-per-second calculation, useful for comparing practice attempts with the same device and duration.
Detect the musical note, frequency in hertz, and tuning offset of a sung or played note in your browser.
Estimate standby-generator installed cost with itemized low, typical, and high ranges for size, fuel, location, and installation scope.
Italian-language browser tool for free local P7M document previews and technical signature checks, with no signup or document upload; PDF export is paid and the checks are not a complete qualified-signature validation.
Free MIT-licensed iOS software for signing cryptocurrency transactions on a separate offline phone using QR codes; v1.0.0 supports mainnet only, and the software has not had an independent third-party security audit.
Privacy & Security
MIT
Maintainer submission: a free preliminary rectangular-room lighting calculator with editable inputs, a 2D layout and PNG/CSV exports; not measured photometry, IES/CAD integration, electrical design or installation approval.
Free website ad revenue calculator for publishers and bloggers, with adjustable pageviews, CPM, ad placements, fill rate and viewability to estimate monthly and annual revenue without signing up.
A free, unofficial browser tool for PokéBonk players to check pairs of moves and browse fusion recipes by move, result, or type.
A free browser calculator that compares the total cost of buying a product in China with its price at home using your own exchange rate, eligible refund, card fees and additional costs.
Free browser-based developer utilities for formatting JSON, converting CSV and JSON, decoding JWTs, testing regular expressions, and converting Unix timestamps.
100% Private In-Browser Media Compressor, PDF Studio & Universal File Converter
Utilities
MIT
Free desktop painting and layered PSD editing with optional local MCP collaboration. See the workspace and 63-second demo at https://peerbrush.com/#demo.
Design & Graphics
GPL-3.0-only
Free open-source PDF editor that lets you edit existing text and images, fill forms, and organize pages locally in your browser.
Writing & Docs
AGPL-3.0
SmartTeddy, Inc.’s proprietary but free online toolkit offers 106 PDF tools for text editing, signing, forms, conversion, merging, compression, OCR and translation, with no sign-up, trial or card and fair hourly limits for AI tools.
Free riddles, movement breaks and browser games for elementary classrooms, with presenter tools for teachers.
Free browser-based song practice with chords, lyrics and line-by-line play-along for guitar, ukulele and piano.
Education
Proprietary — free to use
A free online utility for converting PHP code snippets for use in ASPRunner.NET projects.
Free Japanese personality and self-reflection quizzes with instant results, no registration, and published scoring explanations. For entertainment and reflection, not medical or psychological diagnosis.
Convert typed notes and markdown into clean handwritten notebook sheets.
Writing & Docs
MIT
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ABOUT THIS DIRECTORY
A practical directory of free online tools
CareerFlora Open Tools helps you discover third-party software for common work, study, creative, and development tasks. Browse by category, search descriptions and tags, or sort listings by GitHub stars and listed date.
Listings are reviewed before they are added. Each tool is operated by its own publisher, so check the destination website for current availability, sign-in requirements, privacy terms, pricing, and license details.
Frequently asked questions
What is the CareerFlora Open Tools directory?
It is a curated directory of third-party free online and open-source tools across work, study, design, writing, privacy, and development categories.
Does CareerFlora host or operate the listed tools?
No. Listings link to third-party websites and repositories. Check each destination for its current account requirements, privacy practices, pricing, and license.
How can I suggest a tool or report a listing?
Use the Submit a tool action to send a listing for review, or choose Report an entry and select the listing. Requests are reviewed before changes are made to the directory.