Open source
ESLint
Pluggable JavaScript linter that finds and fixes code problems
Formatters and LintersJavaScript linter
Alternatives to Prettier
12 tools like Prettier, chosen by what they do. About Prettier
Open source
Biome
Fast formatter and linter for JavaScript, TypeScript, CSS and more
Build ToolsFast formatter and linter
Open source
textlint
Pluggable linter that checks prose in Markdown and plain text
Writing ToolsPluggable text linter
Open source
Transform
Converts code between formats such as JSON, YAML, SVG and TypeScript
Online UtilitiesConvert code between formats
Open source
JSON Crack
Visualize JSON, YAML, CSV and XML as interactive graphs
Online UtilitiesVisualize JSON as graphs
Open source
lint-staged
Runs linters and formatters only on files staged in Git
Release ToolingRun linters on staged files
Open source
Notepad++
Free Windows code editor with syntax highlighting for many languages
Code EditorsFree Windows source editor
Open source
quicktype
Generates typed models from JSON, JSON Schema and GraphQL
Online UtilitiesJSON to types generator
Free
TypeScript Playground
Browser editor to try TypeScript and see compiled output
Online PlaygroundsTry TypeScript in browser
Freemium
OneCompiler
Write, run and share code in 110+ languages in the browser
Online PlaygroundsCompile code in any language
Freemium
WebStorm
JavaScript and TypeScript IDE with code intelligence and debugging
Code EditorsJetBrains IDE for JavaScript