Open-Source Tools
A curated collection of open-source tools you can use instantly in your browser. No accounts, no signups, no tracking.
SHOWING 174 OF 174 TOOLS
Excalidraw
FeaturedVirtual whiteboard for sketching hand-drawn like diagrams
CryptPad
FeaturedCollaborative office suite, end-to-end encrypted and open-source.
Grist
FeaturedModern relational spreadsheet. It combines the flexibility of a spreadsheet with the robustness of a database
Datasette Lite
a full server-side Datasette Python web application directly in your browser
RAWGraphs
A web interface to create custom vector-based visualizations on top of RAWGraphs core
drawDB
FeaturedFree, simple, and intuitive online database diagram editor and SQL generator
Graphite
FeaturedCommunity-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
Mermaid Live
Edit, preview and share mermaid charts/diagrams. New implementation of the live editor.
privacy.sexy
FeaturedA tool to enforce privacy & security best-practices on Windows, macOS and Linux, because privacy is sexy
SVG-Edit
Powerful SVG-Editor for your browser
Method Draw
Simple and easy-to-use SVG editor experience
Piskel
Easy-to-use sprite editor. It can be used to create game sprites, animations, and pixel-art
Browserpad
Plain text editor in the browser.
Cryptii
App for modular conversion, encoding, and encryption
Markdown Live Preview
Markdown editor with live preview
EtherCalc
Spreadsheet for real-time collaborative editing
Dillinger
"The last Markdown editor, ever."
StackEdit
FeaturedFull-featured markdown editor
Resume Nation
Progressive resume builder which works offline
JS Bin
Collaborative JavaScript Debugging App
Python Tutor
Visualize code execution step-by-step to better understand programming concepts and debugging.
DartPad
An online Dart editor with support for console, web, and Flutter apps.
Pandoc WASM
Convert documents without leaving the browser.
Notepad PWA
📒 An offline capable Notepad PWA
JSPaint
Featured🎨 Classic MS Paint, ＲＥＶＩＶＥＤ + ✨Extras
PixelCraft
A pixel Art & Animation Creation Tool Built using HTML5 Canvas
PairDrop
FeaturedTransfer Files Cross-Platform. No Setup, No Signup.
LocalSend-Web
FeaturedAn open-source cross-platform alternative to AirDrop, but works in LAN only
WebLLM
FeaturedHigh-performance In-browser LLM Inference Engine
FileDrop
End-to-end encrypted peer-to-peer file transfer and chat in the
Clip Fish
App for quickly sharing links, text snippets, and files.
dDoc
A privacy-first, end-to-end encrypted alternative to Google Docs for rich document editing.
dSheets
dsheets.new is alternative to google sheets & excel.
draw.io
A configurable browser-based diagramming and whiteboarding tool for flowcharts, UML, network diagrams, ER diagrams, BPMN, and more.
Mr. Data Converter
Takes CSV or tab-delimited data from Excel and converts it into several web-friendly formats, include JSON and XML.
CyberChef
A browser-based “cyber” workbench for encoding, decoding, encryption, compression, hashing, parsing, and data analysis recipes.
BRouter-web
A web client for the BRouter routing engine, providing OpenStreetMap-based route planning with profile customization and route export.
KiCanvas
An interactive browser-based viewer for KiCad schematics and PCB boards.
CircuitJS1
A browser-based electronic circuit simulator with animated schematics, example circuits, and editable components.
Algorithm Visualizer
An interactive online platform for visualizing algorithms from code and learning algorithm behavior through animations.
Pixelorama
Create pixel art in your browser
ComposeYogi
Ableton-style music composer for the web
Drumhaus
Computer Controlled Rhythmic Groove Machine
VERT
File-converter fully in-browser
Spliit
Share expenses with your friends and family
PaperKnife
Merge, split, compress, and edit PDFs 100% locally on your device
Squoosh
Image compression web app that reduces image sizes through numerous formats
ente Paste
Share text between devices securely with QR code or URL
Linwood Butterfly
Powerful, minimalistic, cross-platform, opensource note-taking app
MiNi PhotoEditor
Online webgl photo editor with effects, filters and cropping
OmniClip
Powerful video editor right in your browser
Phosphor-Cam
Real-time ASCII art camera that transforms your webcam feed into glowing terminal aesthetics. Built with React + Canvas API
EasyPeasyCV
resume builder designed for professionals who value privacy, flexibility, and control over their data
Online Maven Download Tool
Download Maven JAR dependencies and transitive dependencies as ZIP
ProtegeMiDNI
Redact the non essential info from the spanish National Identification Document
Stirling-PDF
#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere
OpenCode Config Builder
Configuration builder/editor for opencode.
OSIRIS
Open Source Palantir Alternative
QuickRetro
Real-time app for conducting a remote sprint retrospective meeting
Grade Boundaries
A level and IGCSE grade boundary lookup
Enclosed
Minimalistic web application designed for sending end-to-end encrypted notes and files
Image Max URL
Finds larger/original versions of images and videos
QRazyBox
web-based application (a toolkit), that used to analyzing and recovering damaged QR Code
Vecto3d
A super simple tool to convert your SVG's to 3D models
Metadata Remover
Removes metadata from supported formats in-browser using WASM
Dashboard Icons
A collection of over 1800 curated icons for services, applications and tools, designed specifically for dashboards and app directories
Studio
A suite of random, mostly weird, generative art tools!
Gately
Simple and modern web-based logic gate simulator
World Monitor
Real-time global intelligence dashboard. AI-powered news aggregation, geopolitical monitoring, and infrastructure tracking in a unified situational awareness interface
dither
Pixel-perfect dithering utility. Drop an image, dial in the settings, ship a dither
image-scrubber
A tool for anonymizing photographs taken at protests
Satvisor
3D satellite tracker with orbit visualization, pass predictions, and antenna rotator control (GS-232, EasyComm, Hamlib)
Image to UnicodeASCII Generator
Easily transform any image into ASCII/Unicode art
delphitools
A collection of small, low stakes and low effort tools
SvgPathEditor
Online editor to create and manipulate SVG paths
Blockbench
A low poly 3D model editor
AudioMass
Free full-featured web-based audio & waveform editing tool
MiroTalk P2P
WebRTC video conferencing platform built on peer-to-peer (P2P) architecture for fast, secure real-time communication with end-to-end privacy
AST explorer
A web tool to explore the ASTs generated by various parsers.
IT-Tools
Collection of handy online tools for developers, with great UX
flowchart.fun
Easily generate flowcharts and diagrams from text
Koodo Reader
A modern ebook manager and reader
hoppscotch
Open-Source API Development Ecosystem. Alternative to Postman, Insomnia
JSON Crack
visualization application that transforms various data formats, such as JSON, YAML, XML and CSV into interactive graphs
Cobalt
media downloader that doesn't piss you off. it's friendly, efficient, and doesn't have ads, trackers, paywalls or other nonsense.
ToolsForImage
web application that provides a suite of image processing tools
TheSVG
6,100+ SVG icons. Brands, AWS, Azure, GCP, and more. Search, copy, ship.
CheezyPizza
WebRTC based p2p file transfers in your browser
Free CV Builder
Build a professional CV in a few minutes and download it as a PDF
Jobber
Dynamic Job Search RSS Feed Generator
Wavacity
Easy-to-use, multi-track audio editor and recorder
ClearCanvas AI
Generate images, compress photos, upscale pictures, and remove backgrounds
VeriSim
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
SQLChef
Query files like CSV, JSON, and Parquet directly in the browser
BentoPDF
Powerful, privacy-first, client-side PDF toolkit that is self hostable and allows you to manipulate, edit, merge, and process PDF files
ShadeStudio
Create a full color palette from a base color and export it to CSS, Tailwind and SVG
DropSilk
Modern, privacy-focused, peer-to-peer file transfer application built with WebRTC with screen-share and chat functionality
ToolsAtZero
A workbench of 52 everyday utilities (PDF manipulation, image processing, dev tools)
Online tools
Online tools provides md2, md5, sha1, sha2, sha512, bas64, html encode / decode functions
Texturinator
Procedural texture and volume generation toolkit for volumetric rendering, terrain generation
Gridfinity Layout Tool
A tool for planning drawer organization using the Gridfinity modular storage system
Tomodoro
A pomodoro web app with PIP mode, white noise generation, tasks and more!
VoidMesh
Local image and video filters with shaders, on an infinite canvas
GreenDolphin
Recording looper and analysis tool designed for musicians who want to transcribe music or learn songs by ear
Fluid
Dependency-free WebGL studio for generative backgrounds and live embeds
Screenshot Studio
A free, browser-based screenshot editor. Beautiful backgrounds, device frames, 3D effects, animations, and video export. No signup, no watermarks.
Icon Maker
Tool that lets you quickly generate clean, professional app icons using customizable shapes, gradients, and glyphs
Bundlephobia
Find out the cost of adding a new frontend dependency to your project
Schema3D
An interactive tool for visualizing relational database schemas in 3D.
Transform
A polyglot web converter
explainshell.com
Match command-line arguments to their help text
Pattern Craft
Professional-grade background patterns and gradients for your websites and apps
Component Gallery
The Component Gallery is a collection of components from the best Design Systems.
ASM Editor
A web editor to write, run and learn assembly code (X86, MIPS, RISC-V, M68K)
Tokeko
An online creation tool for LALR and LR(1) parsers to learn how language theory works
ROOC Optimization
A web platform for modelling and solving linear optimization problems
Agora Cosmica
Learn from 30 historical figures through stories, dialogues, and AI conversation. Nonprofit, no signup.
Lucide
Beautiful & consistent icon toolkit made by the community
lookscanned
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.
Planar
A client-side web utility to scale, crop, and tile images onto sheets of paper for printing at exact real-world dimensions.
gists.sh
GitHub Gists are the fastest way to share code, notes, and snippets. But they look terrible. This fixes that.
Compress
Say goodbye to bulky files! Crush video sizes by 90% with no quality loss, even offline
Simple Icons
Free SVG icons for popular brands. 3000+ icons, public domain, no signup.
Phosphor Icons
The homepage of Phosphor Icons, a flexible icon family for everyone
Remix Icons
Open source neutral style icon system
Iconoir
An open source icons library with 1600+ icons, supporting React, React Native, Flutter, Vue, Figma, and Framer.
OpenMoji
Open source emojis for designers, developers and everyone else!
heroicons
A set of free MIT-licensed high-quality SVG icons for UI development.
Feather
Simply beautiful open-source icons
Tabler Icons
A set of over 6000 free MIT-licensed high-quality SVG icons for you to use in your web projects.
Sipp Chat
AI inference, packed simply. A blazing-fast, zero-dependency WebGPU runtime to run GGUF models directly in the browser
Midee
Play, visualize, learn, and export your MIDI music as gorgeous piano-roll videos, entirely client-side with zero uploads.
DoHabit
Lightweight, local-first habit tracker designed to respect your privacy
Visual Studio Code for the Web
provides 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
Scratch Tabs
local-first developer workspace for exploring, transforming, and validating text/data formats
Universal Résumé Template
Minimal and formal résumé (CV) website template for print, mobile, and desktop
selfh.st Icons
Dashboard Icons provided by selfh.st
carbon
Create and share beautiful images of your source code
MakeGirlsMoe
Create Anime Characters
ASCIIFlow
An application for drawing ASCII diagrams
AFFiNE
Next-gen knowledge base that brings planning, sorting and creating all together
Logseq
A privacy-first, open-source platform for knowledge management and collaboration
Glyphr Studio
Font editor, made for hobbyists and typeface design beginners
CodeGraphContext (CGC)
An MCP server plus a CLI tool that indexes local code into a graph database to provide context to AI assistants
GoatPad
A notepad for the web written in Flutter
Oscilloscope Online V2
Web Serial Plotter with as much customization as possible
RegExr
HTML/JS based tool for creating, testing, and learning about Regular Expressions
Webtor.io
seamless torrent streaming and file sharing
QuickRef.ME
Share quick reference cheat sheet for developers
zkdrop
Secure, temporary, and minimal file sharing with zero-knowledge encryption
Cryptgeon
Send fully encrypted secure notes or files with custom expiration
Mermify
Bi-directional visual editor for Mermaid.js flowcharts
DrawShare
collaborative whiteboard for drawing and note-taking
EditorPilot
AI writing assistant that lives entirely in your browser
Full Stack open
Learn React, Redux, Node.js, MongoDB, GraphQL and TypeScript in one go