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What is LSP?

The Language Server protocol is used between a tool (the client) and a language smartness provider (the server) to integrate features like auto complete, go to definition, find all references and alike into the tool

–official Language Server Protocol specification

The LSP was created by Microsoft to define a common language for programming language analyzers to speak. Today, several companies have come together to support its growth, including Codenvy, Red Hat, and Sourcegraph, and the protocol is becoming supported by a rapidly growing list of editor and language communities. See below for details on and links to current client and server implementations.

Why LSP?

LSP creates the opportunity to reduce them-times-n complexity problem of providing a high level of support for any programming language in any editor, IDE, or client endpoint to a simplerm-plus-n problem.

For example, instead of the traditional practice of building a Python plugin for VSCode, a Python plugin for Sublime Text, a Python plugin for Vim, a Python plugin for Sourcegraph, and so on, for every language, LSP allows language communities to concentrate their efforts on a single, high performing language server that can provide code completion, hover tooltips, jump-to-definition, find-references, and more, while editor and client communities can concentrate on building a single, high performing, intuitive and idiomatic extension that can communicate withany language server to instantly provide deep language support.

The problem: "The Matrix"

	Go	Java	TypeScript	...
Emacs
Vim
VSCode
...

The solution: lang servers and clients

Go
Java
TypeScript
...

Emacs
Vim
VSCode
...

Current implementations

LSP is growing - fast. Seetables below for the latest on adoption.

Microsoft currently maintains aparallel list of language server implementations in the core LSP repository. This site is designed to operate alongside Microsoft's list by providing more information about the capabilities of language servers and LSP clients, informing users which features to expect when they download and install a new language server and/or client, and communicating to open-source contributors where help is needed.

Qualifications:

To be included on this list, language servers and clients must:

Be fully open source
Be editor-agnostic for language servers or language-agnostic for clients
Implement at least one of the key methods listed below

Key

	Implemented
	WIP
	Not implemented
	Not applicable

Language servers

Language	Maintainer	Repository	Additional capabilities
ActionScript3	Josh Tynjala	github.com/BowlerHatLLC/vscode-nextgenas/tree/master/language-server
Ada	AdaCore	github.com/AdaCore/ada_language_server
ANTLR	Ken Domino	github.com/kaby76/AntlrVSIX	Semantic highlighting, rename, reformat, refactoring, ANTLR 2/3/4, Bison, W3C EBNF
Apache Camel	Camel Tooling	github.com/camel-tooling/camel-language-server
Ballerina	ballerina.io	github.com/ballerina-platform/ballerina-lang/tree/master/language-server
Bash	Mads Hartmann	github.com/bash-lsp/bash-language-server
BibTeX	Andrew Pilsch	https://github.com/oncomouse/citation-langserver
C#	OmniSharp	github.com/OmniSharp/csharp-language-server-protocol	Runs tests Quick fixes Debug profiles
C#	CXuesong	github.com/CXuesong/LanguageServer.NET
C#	Saulius Menkevičius	github.com/razzmatazz/csharp-language-server	suppport for go-to-definition in metadata (on imported dlls)
C / C++	LLVM Team	clang-tools-extra/trunk/clangd
C / C++	Jacob Dufault	github.com/cquery-project/cquery
C / C++	MaskRay	github.com/MaskRay/ccls
Clojure	snoe	github.com/snoe/clojure-lsp
Common Workflow Language (CWL)	Seven Bridges/Rabix	Rabix/Benten	Outline view Javascript expression test evaluation Preview of workflow graph Preview of linked files
Coq	Coq LSP Team	coq-lsp	Outline view Extensions: info panel request, file progress notification, performance report
Cucumber (Gherkin)	Cucumber core team	cucumber/language-server	Autocomplete steps Go to step definition Generate step definition from snippets Syntax highlighting (semantic tokens) Diagnostics for undefined steps Formatting Outline view
IBM Enterprise COBOL for z/OS	IBM	marketplace.visualstudio.com/items?itemName=IBM.zopeneditor	Outline view Previewing of included copybooks on hover Navigate to copybooks Code template snippets Refactoring such as "rename symbol" Variable completion
IBM Enterprise COBOL for z/OS	Broadcom	github.com/eclipse/che-che4z-lsp-for-cobol	Automatic copybook resolution Previewing of included copybooks on hover COBOL Control Flow integration Outline view Code snippets support Support for DB2, CICS and IDMS statements in Cobol Subroutines support
CSS/LESS/SASS	Microsoft	github.com/Microsoft/vscode/tree/main/extensions/css
CSS/LESS/SASS	DeltaEvo	github.com/vscode-langservers/vscode-css-languageserver-bin
D	WebFreak001	github.com/Pure-D/serve-d
Dart	Dart Team	github.com/dart-lang/sdk
Delphi	Embarcadero	Proprietary (DelphiLSP)	No arbitrary code execution² Multi-process architecture
Deno	Deno Team	github.com/denoland/deno/tree/master/cli/lsp
Dockerfile	Remy Suen	github.com/rcjsuen/dockerfile-language-server-nodejs
DreamMaker	SpaceManiac	github.com/SpaceManiac/SpacemanDMM/tree/master/crates/dm-langserver	No arbitrary code execution²
Erg	Shunsuke Shibayama and contributors	github.com/erg-lang/erg/tree/main/crates/els
Erlang	Erlang/OTPandVlad Dumitrescu	github.com/erlang/sourcer
Erlang	Roberto Aloi,Juan Facorro andother contributors	github.com/erlang-ls/erlang_ls
Elixir	Elixir LSP	github.com/elixir-lsp/elixir-ls
Elm	Elm Tooling	github.com/elm-tooling/elm-language-server	SymbolDescriptor extension⁴
F#	Ionide	github.com/fsharp/FsAutoComplete/
Fennel	XeroOl	git.sr.ht/~xerool/fennel-ls	No arbitrary code execution²
fluent-bit	Seonghyeon Cho	github.com/sh-cho/fluent-bit-lsp
Flux	InfluxData	github.com/influxdata/flux-lsp
Fortran	Chris Hansen	github.com/hansec/fortran-language-server
Fuzion	Tokiwa Software GmbH	github.com/tokiwa-software/fuzion-lsp-server	Renaming, Outline, Signature Help
Gauge	Gauge	github.com/getgauge/gauge
Gleam	Louis Pilfold	github.com/gleam-lang/gleam
GLSL	Sven-Hendrik Haase	github.com/svenstaro/glsl-language-server
GoArchived	Sourcegraph	github.com/sourcegraph/go-langserver	No arbitrary code execution²
Go	Go Team	github.com/golang/tools/tree/master/gopls
Grain	Grain Team	github.com/grain-lang/grain	Code formatting
GraphQL	GraphQL Foundation	github.com/graphql/graphiql
Groovy	Prominic	github.com/prominic/groovy-language-server
Groovy	Palantir	github.com/palantir/groovy-language-server
Groovy	VsCode Groovy Lint	github.com/nvuillam/vscode-groovy-lint/tree/master/server	Code Formatting Code refactoring (auto-fix errors)
Hack	HHVM Team	github.com/facebook/hhvm
Haskell	Haskell	https://github.com/haskell/haskell-language-server
Haxe	Haxe Foundation	github.com/vshaxe/haxe-language-server
Helm (Kubernetes)	qvalentin	github.com/mrjosh/helm-ls
IBM High Level Assembler	Broadcom	github.com/eclipse/che-che4z-lsp-for-hlasm
IBM High Level Assembler	IBM	marketplace.visualstudio.com/items?itemName=IBM.zopeneditor	Outline view Previewing of copybooks on hover Navigate to copybooks
HTML	Microsoft	github.com/Microsoft/vscode/tree/main/extensions/html
Imandra Protocol Language	Aesthetic Integration	https://github.com/AestheticIntegration/ipl-vscode
Java	Eclipse Foundation,Red Hat,Microsoft	github.com/eclipse/eclipse.jdt.ls
Java	georgewfraser	github.com/georgewfraser/vscode-javac
Java	Apache NetBeans	marketplace.visualstudio.com/items?itemName=ASF.apache-netbeans-java	Gradle, Maven, and mx support Polyglot and Native Image debugging OpenJDK sources support + jtreg
JavaScript	Typefox	github.com/theia-ide/typescript-language-server	Wrapstsserver
JavaScript	quick-lint-js	github.com/quick-lint/quick-lint-js
JavaScript (Flow)	Flowtype	github.com/flowtype/flow-for-vscode
JSON	Microsoft	github.com/microsoft/vscode/tree/main/extensions/json-language-features/server
JSON Schema	Microsoft	github.com/microsoft/vscode/tree/main/extensions/json-language-features/server
JSON-LD	Arthur Vercruysse	github.com/ajuvercr/jsonld-lsp
Jsonnet	Grafana Labs	github.com/grafana/jsonnet-language-server
JS/TS + PHP + Python + Java	SonarSource	github.com/SonarSource/sonarlint-language-server
Julia	David Anthoff	github.com/JuliaEditorSupport/LanguageServer.jl
Kotlin	fwcd	github.com/fwcd/KotlinLanguageServer
Langium	TypeFox	github.com/langium/langium	Tool for implementing a language server in any language
LanguageTool	Julian Valentin	github.com/valentjn/ltex-ls	Checking spelling and grammar in markup languages such as LaTeX, Markdown, XHTML, …
LaTeX	Eric Förster	github.com/efoerster/texlab
Lua	Alloyed	github.com/Alloyed/lua-lsp
Lua	tangzx	github.com/EmmyLua/EmmyLua-LanguageServer
Lua	LuaLS	github.com/LuaLS/lua-language-server
Markdown	Artem Pianykh	github.com/artempyanykh/marksman	Support for wiki-links Table of Contents generation Single-file mode
MOCA	Danny Glass	github.com/mrglassdanny/moca-language-server	Formatting, Semantic Highlighting, Signature Help, MOCA Client Capabilities
Nextflow	Seqera	github.com/nextflow-io/language-server	Formatting, rename, semantic highlighting, visualization of code as workflow diagrams
Odin	Daniel Gavin	https://github.com/DanielGavin/ols
OCaml	OCaml	github.com/ocaml/ocaml-lsp
Nim	PMunch	github.com/PMunch/nimlsp
openVALIDATION	openVALIDATION	github.com/openvalidation/ov-language-server
Perl	Gerald Richter	github.com/richterger/Perl-LanguageServer	Installable via CPAN - https://metacpan.org/pod/Perl::LanguageServer Implements Debug Adaptor Protocol
Perl	Brian Scannell	github.com/bscan/PerlNavigator	No external dependencies
Perl	Marc Reisner	github.com/FractalBoy/perl-language-server	InstallPLS from CPAN, and thePerl Language Server Visual Studio Code extension
PHP	Felix Becker	github.com/felixfbecker/php-language-server	No arbitrary code execution²
PHP	Dan Leech	github.com/phpactor/phpactor	No arbitrary code execution² Code Action Document Highlight Goto Implementation Document Symbol Has custom extensions
PHP	Tom Gerrits	gitlab.com/Serenata/Serenata	No arbitrary code execution² Has custom extensions
PHP	Hvy Industries	github.com/HvyIndustries/crane/blob/master/server
PHP	Matt Brown	github.com/vimeo/psalm	No arbitrary code execution²
IBM Enterprise PL/I for z/OS	IBM	marketplace.visualstudio.com/items?itemName=IBM.zopeneditor	Outline view Previewing of include files on hover Navigate to include files Refactoring such as "rename symbol" Variable completion
Polyglot (Java, JavaScript, Python, R, Ruby, …)	GraalVM	marketplace.visualstudio.com/items?itemName=oracle-labs-graalvm.graalvm	Supports polyglot programming Based on dynamic run-time data Supports delegation to other language servers
PowerShell	Microsoft	github.com/PowerShell/PowerShellEditorServices
Puppet	Lingua Pupuli	github.com/lingua-pupuli/puppet-editor-services
PureScript	Nicholas Wolverson	github.com/nwolverson/purescript-language-server
Python	Microsoft	github.com/microsoft/pyright
PythonArchived	Microsoft	github.com/Microsoft/python-language-server
PythonArchived	Sourcegraph	https://github.com/sourcegraph/python-langserver	Automatic dependency management¹ No arbitrary code execution²
Python	python-lsp	github.com/python-lsp/python-lsp-server
Python	Samuel Roeca	github.com/pappasam/jedi-language-server
Q#Archived	Microsoft	github.com/microsoft/qsharp-compiler
R	REditorSupport	github.com/REditorSupport/languageserver	Code Formatting
Racket	Conor Finegan	github.com/jeapostrophe/racket-langserver
Raku	Brian Scannell	github.com/bscan/RakuNavigator
Red	bitbegin	github.com/bitbegin/redlangserver
reStructuredText	swyddfa	github.com/swyddfa/esbonio
Rego	Styra	github.com/StyraInc/regal	Goto Definition Request, Code Actions, Folding Range, Formatting, Inlay Hints
Rell	ChromaWay	gitlab.com/chromaway/core-tools/rell-toolbox/	Goto Definition, Code Actions, Code Formatting, Signature Help, Rename, Semantic highlighting, Outline view
Robot Framework	Robocorp	github.com/robocorp/robotframework-lsp	Code Formatting
Ruby	Fred Snyder	github.com/castwide/solargraph
Ruby	Shopify	github.com/Shopify/ruby-lsp
RustArchived	Nick Cameron and the Rust community	github.com/rust-lang/rls	Automatic dependency management¹
Rust	Aleksey Kladov and contributors	github.com/rust-analyzer/rust-analyzer	Automatic dependency management¹
Scala	Iulian Dragos	github.com/dragos/dragos-vscode-scala
Scala	Scalameta	github.com/scalameta/metals	Automatic dependency management¹ Tree View Protocol⁵ Decoration Protocol⁶
SPARQL	Ioannis Nezis	github.com/IoannisNezis/Qlue-ls
SPARQL	Stardog Union	github.com/stardog-union/stardog-language-servers/tree/master/packages/sparql-language-server	No arbitrary code execution²
Smalltalk/Pharo	Benoît Verhaeghe	github.com/badetitou/Pharo-LanguageServer	Code Formatting, Signature Help
Snyk	Snyk	https://github.com/snyk/snyk-ls	Automatic download of Snyk CLI with custom notification of path to binary, diagnostic workspace scans over all workspace folders on startup. Supports Snyk Code, Snyk IaC and Snyk Open Source. Authentication to Snyk is supported and token returned via custom notification.
Standard ML	Ariel Davis	Millet	Code formatting
Swift & C-family	Apple Inc	github.com/apple/sourcekit-lsp
Systemtap	Red Hat	Systemtap LSP
SystemVerilog	dalance	github.com/dalance/svls
Terraform	Julio Tain Sueiras	github.com/juliosueiras/terraform-lsp	Dynamic completion from provider binary
Terraform	Hashicorp	github.com/hashicorp/terraform-ls
TTCN-3	Nokia	github.com/nokia/ntt	Automatic dependency management¹
Turtle	Stardog Union	github.com/stardog-union/stardog-language-servers/tree/master/packages/turtle-language-server	No arbitrary code execution²
TypeScript	TypeFox	github.com/theia-ide/typescript-language-server	Wrapstsserver
V	vlang	https://github.com/vlang/v-analyzer
Vala	vala-lang	https://github.com/vala-lang/vala-language-server
Veryl	dalance	github.com/dalance/veryl/tree/master/crates/languageserver	Formatting, Semantic highlighting
VimScript	iamcco	github.com/iamcco/vim-language-server
Wikitext	Bhsd	github.com/bhsd-harry/vscode-extension-wikiparser	Color decorator Document link Rename Folding Outline view Signature help Inlay hint
XML	IBM	github.com/microclimate-devops/xml-language-server
XML	Red Hat andAngelo ZERR	github.com/angelozerr/lsp4xml	XML Schema validation/completion, Foldings, Rename element, Formatting, Document Link, Extensible to add custom completion, hover, etc
YAML	Red Hat	github.com/redhat-developer/yaml-language-server
YANG	TypeFox	github.com/yang-tools/yang-lsp
Xtext (Any Language)	TypeFox	github.com/eclipse/xtext-core
Work in Progress
CrystalArchived	Ryan L. Bell andcontributors	github.com/crystal-lang-tools/scry
PlantUML	Patrick Dewey	github.com/ptdewey/plantuml-lsp
reStructuredTextArchived	Lex Li	github.com/lextm/restructuredtext-antlr
Ruby	Fumiaki MATSUSHIMA	github.com/mtsmfm/language_server-ruby
TypeCobol	TypeCobol Team	TypeCobol Language Server
WebAssemblyArchived	Darin Morrison	github.com/wasm-lsp/wasm-language-server
Zig	zigtools andcontributors	github.com/zigtools/zls

Notes:

Automatic dependency management: Language servers that support this feature are able to resolve / install a project's 3rd-party dependencies without the need for a user to manually intervene.
No arbitrary code execution: Language servers that support this featuredon't execute arbitrary code (some language servers do this when running build scripts, analyzing the project, etc.).
Tree View Protocol: Language servers that support this feature are able to render tree views.See this link for more information.
Decoration Protocol: Language servers that support this feature are able to provide text to be displayed as "non-editable" text in the text editor.See this link for more information.

LSP clients

Editor/client	Maintainer	Repository
Acme	Fazlul Shahriar	https://github.com/fhs/acme-lsp
BBEdit	Bare Bones Software, Inc.	Proprietary
C++Builder	Embarcadero	Proprietary
Delphi	Embarcadero	Proprietary
Eclipse LSP4E	Eclipse	github.com/eclipse/lsp4e/
Eclipse Che	Eclipse,Codenvy	github.com/eclipse/che/
ecode	Martín Lucas Golini	github.com/SpartanJ/ecode
Emacs	Vibhav Pant	github.com/emacs-lsp/lsp-mode
Emacs	João Távora	github.com/joaotavora/eglot
Emacs	Andy Stewart	github.com/manateelazycat/lsp-bridge
Geany	Jiří Techet	github.com/techee/geany-lsp
GNATStudio	AdaCore	https://github.com/AdaCore/gps
Helix	Blaž Hrastnik	https://github.com/helix-editor/helix
IntelliJ / JetBrains IDEs	Ballerina-Lang Team	github.com/ballerina-platform/lsp4intellij
IntelliJ / JetBrains IDEs	Guillaume Tâche	github.com/gtache/intellij-lsp
Kakoune	Ruslan Prokopchuk	github.com/ul/kak-lsp
Kate	Kate Team	invent.kde.org/kde/kate
Moonshine IDE	Prominic	github.com/prominic/Moonshine-IDE
Oni	Oni	github.com/onivim/oni
Qt Creator	Qt Project	code.qt.io/cgit/qt-creator
VSCode	Microsoft	github.com/microsoft/VSCode
multilspy	Microsoft	github.com/microsoft/monitors4codegen
vim	Yegappan Lakshmanan	github.com/yegappan/lsp
Neovim	Neovim Team	github.com/neovim/neovim
vim/neovim	Nate Bosch	github.com/natebosch/vim-lsc
vim/neovim	Prabir Shrestha	github.com/prabirshrestha/vim-lsp
vim/neovim	Junfeng Li	github.com/autozimu/LanguageClient-neovim
vim/neovim	w0rp	github.com/w0rp/ale
vim/neovim	Qiming zhao	github.com/neoclide/coc.nvim
Sublime Text	Tom van Ommeren	github.com/sublimelsp/LSP
MS Monaco Editor	TypeFox	github.com/TypeFox/monaco-languageclient
Work in progress
Atom	GitHub	github.com/atom-community/atom-languageclient
CodeMirror	Wylie Conlon	github.com/wylieconlon/lsp-editor-adapter
CodeMirror 6	Mahmud Ridwan	github.com/FurqanSoftware/codemirror-languageserver
Emacs	Corey Richardson	github.com/sourcegraph/emacs-lsp
Sublime	Sourcegraph	github.com/sourcegraph/sublime-lsp
Theia	Theia IDE	github.com/theia-ide/theia
Spyder IDE	Spyder IDE Dev Team	github.com/spyder-ide/spyder
Ycmd	Ycmd team	github.com/Valloric/ycmd
Brackets	Adobe	github.com/adobe/brackets
JupyterLab	Michał Krassowski	krassowski/jupyterlab-lsp
Rapunzel	Sebastiaan Mathôt	opensesame-extension-language_server

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