Open source
IT Tools
Free collection of online tools for developers and IT work
Online UtilitiesHandy tools for developers
Dev Utilities
Editors, terminals and online playgrounds that make coding smoother.
92 tools
Latest Tools
6 toolsFreemium
JSFiddle
Online playground for testing HTML, CSS, JavaScript and frameworks
Online PlaygroundsClassic front end sandbox
Open source
JSON Crack
Visualize JSON, YAML, CSV and XML as interactive graphs
Online UtilitiesVisualize JSON as graphs
Open source
lazydocker
Terminal UI for managing Docker containers and compose projects
Local DevTerminal UI for Docker
Free
Open source
massCode
Free open source workspace for snippets, notes and API requests
Dev ProductivityOpen source snippet manager
API Clients
2 toolsOpen source
Freemium
CLI Tools
9 toolsOpen source
Open source
Open source
btop
Terminal resource monitor for CPU, memory, disks and network
CLI ToolsResource monitor for terminal
Open source
Open source
Open source
jq
Command line processor for filtering and transforming JSON data
CLI ToolsCommand line JSON processor
Open source
Open source
Open source
Code Editors
9 toolsOpen source
Freemium
IntelliJ IDEA
Java and Kotlin IDE with code intelligence and built-in tools
Code EditorsJava and Kotlin IDE
Open source
Open source
Neovim
Modern Vim-based editor with Lua config and built-in LSP
Code EditorsModern Vim for the terminal
Open source
Notepad++
Free Windows code editor with syntax highlighting for many languages
Code EditorsFree Windows source editor
Freemium
Paid
Open source
VSCodium
VS Code build from MIT-licensed source, with telemetry disabled
Code EditorsVS Code without telemetry
Freemium
WebStorm
JavaScript and TypeScript IDE with code intelligence and debugging
Code EditorsJetBrains IDE for JavaScript
Debugging
1 toolPopular
Debugging Tools
9 toolsFree trial
Charles Proxy
HTTP proxy for viewing and debugging web and mobile traffic
Debugging ToolsHTTP debugging proxy
Open source
GoAccess
Open source real-time web server log analyzer with live dashboards
Debugging ToolsReal time web log analyzer
Open source
lnav
Terminal log viewer that merges, filters and queries log files
Debugging ToolsTerminal log file viewer
Open source
mitmproxy
Free interactive HTTPS proxy to inspect and modify web traffic
Debugging ToolsInteractive HTTPS proxy
Curated
Proxyman
Native HTTP and HTTPS debugging proxy for Mac, iOS and more
Debugging ToolsNative HTTP debugging proxy
Open source
Redux DevTools
Debug Redux state changes with action history and replay
Debugging ToolsDebug Redux state changes
Curated
Seq
Self-hosted server for searching structured logs and traces
Debugging ToolsStructured log search server
Open source
Tampermonkey
Browser extension for running JavaScript userscripts on any website
Debugging ToolsPopular userscript managerInactive
Freemium
Wappalyzer
Finds the technologies a website uses, and builds company lead lists
Debugging ToolsIdentify website technologies
Dev Productivity
5 toolsFreemium
Alfred
Mac launcher for apps, files, web search and text snippets
Dev ProductivitymacOS launcher and workflows
Paid
Dash
Offline API documentation browser and code snippet manager
Dev ProductivityOffline API docs browser
Free
GitHub Gist
Share code snippets, notes and small files with a link
Dev ProductivityShare code snippets
Open source
massCode
Free open source workspace for snippets, notes and API requests
Dev ProductivityOpen source snippet manager
Open source
Docs
2 toolsFree
Open source
Editors and IDEs
2 toolsCurated
StackBlitz
Browser-based IDE that runs Node.js projects in a tab
Editors and IDEsBrowser-based dev environment
Open source
Visual Studio Code
Open-source code editor for writing, debugging and reviewing code
Editors and IDEsCode editor
Formatters and Linters
2 tools
Generators
1 toolFreemium
Local Dev
5 toolsOpen source
DDEV
Docker-based local PHP and Node.js dev environments for teams
Local DevLocal web dev with containers
Curated
Laravel Herd
Native local PHP and Laravel environment for macOS and Windows
Local DevFast local PHP environment
Open source
lazydocker
Terminal UI for managing Docker containers and compose projects
Local DevTerminal UI for Docker
Free
Open source
Podman Desktop
Free open source app for running containers and Kubernetes locally
Local DevOpen source container desktop
Online Playgrounds
8 toolsOpen source
Compiler Explorer
Online compiler that shows the assembly output of your code
Online PlaygroundsSee compiled assembly live
Free
Go Playground
Free browser sandbox for running and sharing Go programs
Online PlaygroundsRun Go code online
Freemium
JSFiddle
Online playground for testing HTML, CSS, JavaScript and frameworks
Online PlaygroundsClassic front end sandbox
Open source
Mermaid Live Editor
Online editor for writing and previewing Mermaid text diagrams
Online PlaygroundsLive Mermaid diagram editor
Freemium
OneCompiler
Write, run and share code in 110+ languages in the browser
Online PlaygroundsCompile code in any language
Curated
Playcode
Build websites and apps with AI, run them in the cloud
Online PlaygroundsInstant online code playground
Free
Tailwind Play
Official online playground for trying Tailwind CSS in the browser
Online PlaygroundsTailwind CSS playground
Free
TypeScript Playground
Browser editor to try TypeScript and see compiled output
Online PlaygroundsTry TypeScript in browser
Online Utilities
14 toolsPopular
Crontab Guru
Cron schedule editor that explains expressions in plain English
Online UtilitiesCron expression editor
Open source
CyberChef
Browser tool for encoding, encryption, compression and data analysis
Online UtilitiesThe cyber swiss army knife
Open source
DevToys
Offline desktop toolkit with 30 tools for everyday developer tasks
Online UtilitiesOffline developer utilities
Free
DummyJSON
Free fake REST API with placeholder JSON data for testing
Online UtilitiesFake REST data for testing
Curated
Epoch Converter
Convert Unix timestamps to dates and back, with code examples
Online UtilitiesUnix timestamp converter
Open source
IT Tools
Free collection of online tools for developers and IT work
Online UtilitiesHandy tools for developers
Open source
JSON Crack
Visualize JSON, YAML, CSV and XML as interactive graphs
Online UtilitiesVisualize JSON as graphs
Free
JWT.io
Decode, verify and generate JSON Web Tokens in your browser
Online UtilitiesDecode and verify JWTs
Curated
OGimage.gallery
Hand-picked collection of Open Graph images for inspiration
Online UtilitiesOG image inspiration and tools
Freemium
OpenGraph
Preview how links look on social media and generate OG images
Online UtilitiesPreview Open Graph tags
Open source
quicktype
Generates typed models from JSON, JSON Schema and GraphQL
Online UtilitiesJSON to types generator
Open source
RegExr
Learn, build and test regular expressions with live matching
Online UtilitiesLearn and test regexInactive
Open source
Transform
Converts code between formats such as JSON, YAML, SVG and TypeScript
Online UtilitiesConvert code between formats
Curated
UUID Generator
Generate random version 4 UUIDs online, one at a time or in bulk
Online UtilitiesGenerate UUIDs online
Package Managers
8 toolsOpen source
Bundlephobia
Check the bundle size and cost of any npm package before installing
Package ManagersFind npm package cost
Free
crates.io
Central registry for sharing and installing Rust crates
Package ManagersRust package registry
Open source
Homebrew
Package manager for command line tools and apps on macOS and Linux
Package ManagersPackage manager for macOS
Open source
JSR
Open source registry for JavaScript and TypeScript packages
Package ManagersModern JS and TS registry
Curated
npm trends
Compare download counts and trends for npm packages side by side
Package ManagersCompare npm package trends
Free
PyPI
Official package index for finding and installing Python packages
Package ManagersPython package index
Open source
uv
Fast Python package and project manager written in Rust
Package ManagersFast Python package manager
Open source
Volta
Tool manager that pins Node and JavaScript tools per project
Package ManagersJavaScript tool manager
Terminal
1 toolCurated
Terminals Shells
11 toolsOpen source
Alacritty
Fast GPU-accelerated terminal emulator with sensible defaults
Terminals ShellsGPU accelerated terminal
Open source
fish
Friendly interactive shell with suggestions and syntax highlighting
Terminals ShellsFriendly interactive shell
Open source
Ghostty
Fast terminal emulator with native UI and GPU rendering
Terminals ShellsFast native terminal emulator
Open source
Open source
kitty
GPU-based terminal emulator with image display and remote control
Terminals ShellsFast feature rich terminal
Open source
Nushell
Shell that passes structured data between commands in pipelines
Terminals ShellsShell with structured data
Open source
Oh My Zsh
Community framework for managing your Zsh configuration
Terminals ShellsZsh config framework
Open source
Starship
Minimal, fast shell prompt that works with most shells
Terminals ShellsFast custom shell prompt
Open source
tmux
Terminal multiplexer for splitting and detaching shell sessions
Terminals ShellsTerminal multiplexer
Open source
WezTerm
Cross-platform terminal emulator and multiplexer configured in Lua
Terminals ShellsLua configurable terminal
Open source
Zellij
Terminal workspace with panes, tabs and detachable sessions
Terminals ShellsTerminal workspace manager
Testing
2 toolsOpen source
Open source
Version Control
1 toolFreemium
