Self-Hostable Tools

Virtual whiteboard for sketching hand-drawn like diagrams. Supports real-time collaboration, export to PNG/SVG, and has a library of shapes and icons.

Share files instantly with nearby devices on your local network. Open-source successor to Snapdrop with P2P transfer.

Open-source browser-based audio editor with waveform visualization, cut/copy/paste editing, and effects including normalize, fade in/out, reverse, and amplify. Processes audio entirely in your browser — no uploads to any server.

Datasette running entirely in your browser via WebAssembly (Pyodide). Upload SQLite databases or CSV files and explore them with a full SQL interface — no server, no account, and your data never leaves your device. Built on the popular Datasette data exploration framework by Simon Willison.

Google-built image compression tool that runs entirely in the browser. Compare original vs compressed side-by-side, supports WebP, AVIF, MozJPEG, and more.

Combines multiple API documentations in a fast, organized, and searchable interface. Covers JavaScript, HTML, CSS, Node.js, Ruby, Python, and hundreds more.

Create and share beautiful images of your source code. Choose from dozens of syntax themes, languages, and export to PNG or SVG.

Free dynamic mathematics software for all levels of education. Combine geometry, algebra, spreadsheets, graphing, statistics, and calculus in one interactive tool.

A collaborative digital whiteboard with a clean, minimal interface. Draw freehand, add shapes, arrows, text, and sticky notes to create diagrams and visual notes.

SVG Viewer is a free online toolkit designed to help designers, developers, and creators view, edit, optimize, and convert SVG files directly in their web browser. Instead of installing dedicated graphics software, users can upload an SVG file or paste SVG code and immediately see a real-time visual preview. The platform requires no sign-up, making it a convenient solution for quickly working with vector graphics.

Multilingual grammar, style, and spell checker that supports over 30 languages. Detects errors that simple spell checkers cannot find.

Cloud-enabled, mobile-ready, offline-storage compatible Markdown editor. Preview rendered Markdown in real-time as you type.

Visualize JSON data into interactive graphs. Seamlessly explore complex JSON structures with a tree-like graph view, search, and filter capabilities.

Open-source browser tool that generates customizable privacy hardening scripts for Windows, macOS, and Linux. Browse 900+ organized tweaks — disable telemetry, advertising IDs, data collection services, and more — select what you want, and download a ready-to-run script. All script generation runs client-side: no account, no uploads, nothing leaves your browser.

Browser SOP Builder is a single-purpose worksheet for drafting controlled procedures from rough process notes. It captures owners, triggers, numbered actions, completion criteria, quality checks, and exception paths, then previews and exports Markdown. Inputs stay in browser memory.

Music Tools Lab is a free collection of browser-based utilities for musicians and audio workflows, including BPM and key detection, metronomes, tuners, playlist analysis, audio conversion, trimming, and vocal reduction. Core audio processing runs locally in the browser, so selected files are not uploaded, and no account is required.

Check Shopify product CSVs before import. CSV SafeCheck flags missing required columns, invalid values, duplicate handles, option and SKU risks, and formula-like cells. Deterministic safe fixes and reports are generated locally in your browser, with no upload, account, tracker, or cookie.

Open-source tests of web browser privacy. Compares tracking protection, fingerprinting resistance, and other privacy features across major browsers.

Online tool for converting between CSV, JSON, and SQL formats. Also includes data cleaning and transformation utilities. All processing happens in the browser.

Free, open-source video conferencing that works directly in your browser. Create a room and share the link — no account, download, or plugin needed.

Collection of 70+ developer utilities: hash generators, encoders, converters, formatters, and more — all in one place.

What's My IP Live is a free, no-login IP address checker that helps users instantly find their public IPv4 or IPv6 address, location, ISP, and network details. It also includes useful privacy and troubleshooting tools such as IP lookup, VPN detection, DNS lookup, WHOIS lookup, SSL checker, browser information, and speed test tools.

Open-source API development ecosystem. Test REST, GraphQL, WebSocket, and more — a lightweight Postman alternative.

The simplest way to host an AMA session. Create a space, share the link, and start answering. No registration required.

Interactive neural network visualization in the browser. Experiment with layers, neurons, activation functions, and learning rates to understand how neural networks learn.

This is a tool website forked from it-tools, containing 100+ tools.

A collection of 40+ free, browser-based color tools and SVG generators for creating backgrounds, patterns, textures, gradients, and shapes. Each tool works directly in the browser with zero signup required. Perfect for web designers and developers who need custom visuals without opening heavy design software.

A privacy-first writing and publishing platform that requires no account to use. Write anything, click publish, and instantly get a permanent shareable URL. No ads, no tracking, no required signup — just a clean editor that gets out of your way.

Share secrets securely with end-to-end encryption. Messages self-destruct after being read or after a set expiration time.