Open Source Linux Language Servers
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Language Servers for Linux
View 1278 business solutionsBrowse free open source Language Servers and projects for Linux below. Use the toggles on the left to filter open source Language Servers by OS, license, language, programming language, and project status.
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Monitor production, track downtime and improve OEE.Evocon is a visual and user-friendly OEE software that helps manufacturing companies improve productivity and remove waste as they become better.
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clangd
clangd language server
clangd understands your C++ code and adds smart features to your editor: code completion, compile errors, definition, and more. clangd is a language server that can work with many editors via a plugin. Here’s Visual Studio Code with the clangd plugin, demonstrating code completion. -
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Verible
Verible is a suite of SystemVerilog developer tools
The Verible project's main mission is to parse SystemVerilog (IEEE 1800-2017) (as standardized in the SV-LRM) for a wide variety of applications, including developer tools. It was born out of a need to parse un-preprocessed source files, which is suitable for single-file applications like style-linting and formatting. In doing so, it can be adapted to parse preprocessed source files, which is what real compilers and toolchains require. The spirit of the project is that no-one should ever have to develop a SystemVerilog parser for their own application, because developing a standard-compliant parser is an enormous task due to the syntactic complexity of the language. Verible's parser is also regularly tested against an ever-growing suite of (tool-independent) language compliance tests. A lesser (but notable) objective is that the language-agnostic components of Verible be usable for rapidly developing language support tools for other languages. -
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rust-analyzer
A Rust compiler front-end for IDEs
rust-analyzer is a modular compiler frontend for the Rust language. It is a part of a larger rls-2.0 effort to create excellent IDE support for Rust. If you want to contribute to rust-analyzer or are just curious about how things work under the hood, check the ./docs/dev folder. If you want to use rust-analyzer's language server with your editor of choice, check the manual folder. It also contains some tips & tricks to help you be more productive when using rust-analyzer. rust-analyzer is an implementation of Language Server Protocol for the Rust programming language. It provides features like completion and goto definition for many code editors, including VS Code, Emacs and Vim. For VS Code, install rust-analyzer extension from the marketplace. Prebuilt language server binaries for Windows, Linux and Mac are available on the releases page. -
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lua-language-server
A language server that offers Lua language support - programmed in Lua
The Lua language server provides various language features for Lua to make development easier and faster. With around half a million installs on Visual Studio Code, it is the most popular extension for Lua language support. The language server can be installed for use in Visual Studio Code, NeoVim, and any other clients that support the Language Server Protocol. The language server can be configured using a configuration file. The language server and Visual Studio Code client can be installed from the VS Code Marketplace. Check the wiki for a guide to install the language server for use on the command line. This allows the language server to be used with other clients that follow the language server protocol. -
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GraphQL
The GraphQL LSP reference ecosystem for building browser & IDE tools
GraphiQL is the reference implementation of this monorepo, GraphQL IDE, an official project under the GraphQL Foundation. The code uses the permissive MIT license. Whether you want a simple GraphiQL IDE instance for your server, or a more advanced web or desktop GraphQL IDE experience for your framework or plugin, or you want to build an IDE extension or plugin, you've come to the right place! GraphiQL provides monaco editor with a powerful, schema-driven graphql language mode. It also provides CodeMirror with a parser mode for GraphQL along with a live linter and typeahead hinter powered by your GraphQL Schema. It comes with a runtime agnostic Language Service used by GraphQL mode for CodeMirror and GraphQL Language Service Server. It also provides an online immutable parser for GraphQL, designed to be used as part of syntax-highlighting and code intelligence tools such as for the GraphQL Language Service and codemirror-graphql. -
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Python LSP Server
Fork of the python-language-server project
Fork of the python-language-server project, maintained by the Spyder IDE team and the community. A Python 3.7+ implementation of the Language Server Protocol. The base language server requires Jedi to provide Completions, Definitions, Hover, References, Signature Help, and Symbols. Like all language servers, the configuration can be passed from the client that talks to this server (i.e. your editor/IDE or another tool that has the same purpose). The details of how this is done depend on the editor or plugin that you are using to communicate with python-lsp-server. The configuration options are available at that level are documented in CONFIGURATION.md. Overall configuration is computed first from user configuration (in home directory), overridden by configuration passed in by the language client, and then overridden by configuration discovered in the workspace. -
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ccls
C/C++/ObjC language server supporting cross references & hierarchies
C/C++/ObjC language server supporting cross-references, hierarchies, completion, and semantic highlighting. It has a global view of the code base and supports a lot of cross-reference features, see wiki/FAQ. It starts indexing the whole project (including subprojects if exist) parallelly when you open the first file, while the main thread can serve requests before the indexing is complete. Saving files will incrementally update the index. Hierarchies, call (caller/callee) hierarchy, inheritance (base/derived) hierarchy, member hierarchy. Symbol rename. Document symbols and approximate search of workspace symbol. Hover information. Diagnostics and code actions (clang FixIts). Semantic highlighting and preprocessor skipped regions. -
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nil
NIx Language server, an incremental analysis assistent
NIx Language server, an incremental analysis assistant for writing in Nix. This repo is also packaged via Nix flakes. The language server package is available in the default flake output github:oxalica/nil#, under bin/nil. To install, run nix profile install github:oxalica/nil. Alternatively, you can use this repository as a flake input, and add its output to your own flake-managed system-wide and/or home configurations. We are officially supported by nvim-lspconfig, see upstream docs, also the example config for testing. -
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Jsonnet Language Server
A Language Server Protocol (LSP) server for Jsonnet
A Language Server Protocol (LSP) server for Jsonnet. The design is influenced by several configuration languages internal to Google, and embodies years of experience configuring some of the world's most complex IT systems. Jsonnet is now used by many companies and projects. -
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Psalm
A static analysis tool for finding errors in PHP applications
It’s easy to make great things in PHP, but bugs can creep in just as easily. Psalm is a free & open-source static analysis tool that helps you identify problems in your code, so you can sleep a little better. Psalm helps people maintain a wide variety of codebases, large and small, ancient and modern. On its strictest setting it can help you prevent almost all type-related runtime errors, and enables you to take advantage of safe coding patterns popular in other languages. Psalm also fixes bugs automatically, allowing you to improve your code without breaking a sweat. If Psalm cannot infer a type for an expression then it uses a mixed placeholder type. mixed types can sometimes mask bugs, so keeping track of them helps you avoid a number of common pitfalls. Psalm has a Language Server that’s compatible with a range of different IDEs. Psalm can fix many of the issues it finds automatically. -
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Language Server Protocol for Emacs
Emacs client/library for the language server protocol
Client for Language Server Protocol (v3.14). lsp-mode aims to provide IDE-like experience by providing optional integration with the most popular Emacs packages like company, flycheck and projectile. Works out of the box and automatically upgrades if additional packages are present. Choose between full-blown IDE with flashy UI or minimal distraction-free. Supports all features in Language Server Protocol v3.14. Semantic tokens as defined by LSP 3.16 (compatible language servers include recent development builds of clangd and rust-analyzer). If LSP server supports completion, lsp-mode use symbols returned by the server to present the user when completion is triggered via completion-at-point. For UI feedback of the available code actions, you can enable lsp-modeline-code-actions-mode which shows available code actions on modeline. -
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Typst LSP
A brand-new language server for Typst, plus a VS Code extension
A brand-new language server for Typst. Syntax highlighting, error reporting, code completion, and function signature help. Compiles to PDF on save (configurable to as-you-type, or can be disabled) -
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Woke
Woke is a Python-based development and testing framework for Solidity
Woke is a Python-based development and testing framework for Solidity. A testing framework for Solidity smart contracts with Python-native equivalents of Solidity types and blazing-fast execution. A property-based fuzzer for Solidity smart contracts that allows testers to write their fuzz tests in Python. See examples and documentation for more information. Fuzzer builds on top of the testing framework and allows efficient fuzz testing of Solidity smart contracts. Woke implements an LSP server for Solidity. The only currently supported communication channel is TCP. -
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csharp-ls
Roslyn-based LSP language server for C#
This is a hacky Roslyn-based LSP server for C#, as an alternative to omnisharp-roslyn. csharp-ls requires .NET 7 SDK to be installed. However, it has been reported to work with projects using older versions of dotnet SDK, including .NET Core 3, .NET Framework 4.8 and possibly older ones too as it uses the standard Roslyn/MSBuild libs that Visual Studio & omnisharp does. csharp-ls implements the standard LSP protocol to interact with your editor. However there are some features that need a non-standard implementation and this is where editor-specific plugins can be helpful. Supports automatic installation, go-to-metatada (can view code from nuget/compiled dlls) and some additional features. -
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JupyterLab LSP
Coding assistance for JupyterLab (code navigation + hover suggestions
Hover over any piece of code; if an underline appears, you can press Ctrl to get a tooltip with function/class signature, module documentation or any other piece of information that the language server provides. Critical errors have red underline, warnings are orange, etc. Hover over the underlined code to see a more detailed message. Use the context menu entry, or Alt + 🖱️ to jump to definitions/references (you can change it to Ctrl/⌘ in settings); use Alt + o to jump back. Place your cursor on a variable, function, etc and all the usages will be highlighted. When a kernel is available the suggestions from the kernel (such as keys of a dict and columns of a DataFrame) are merged with the suggestions from the Language Server (in notebook). If the kernel is too slow to respond promptly only the Language Server suggestions will be shown (default threshold: 0.6s). You can configure the completer to not attempt to fetch the kernel completions if the kernel is busy. -
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LSP-AI
LSP-AI is an open-source language server
LSP-AI is an open source language server that serves as a backend for AI-powered functionality in your favorite code editors. It offers features like in-editor chatting with LLMs and code completions. Because it is a language server, it works with any editor that has LSP support. -
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LunarVim
An IDE layer for Neovim with sane defaults
LunarVim is an opinionated, extensible, and fast IDE layer for Neovim >= 0.5.0. LunarVim takes advantage of the latest Neovim features such as Treesitter and Language Server Protocol support. LunarVim ships with a sane default config for you to build on top of. Features include autocompletion, integrated terminal, file explorer, fuzzy finder, LSP, linting, formatting and debugging. Just because LunarVim has an opinion doesn't mean you need to share it. Every built-in plugin can be toggled on or off in the config.lua file. This is the place to add your own plugins, keymaps, autocommands, leader bindings and all other custom settings. LunarVim lazyloads plugins wherever possible to maximize speed. Disabled plugins also will not decrease speed due to the plugin list being compiled with only the active plugins. This strategy allows LunarVim to not have to choose between features and speed. -
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PHP Language Server
PHP Implementation of the VS Code Language Server Protocol
A pure PHP implementation of the open Language Server Protocol. Provides static code analysis for PHP for any IDE. -
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Swift Package Manager Project
The package manager for the Swift Programming Language
The Swift Package Manager is a tool for managing distribution of source code, aimed at making it easy to share your code and reuse others’ code. The tool directly addresses the challenges of compiling and linking Swift packages, managing dependencies, versioning, and supporting flexible distribution and collaboration models. We’ve designed the system to make it easy to share packages on services like GitHub, but packages are also great for private personal development, sharing code within a team, or at any other granularity. Swift Package Manager includes a build system that can build for macOS and Linux. Starting with Xcode 11, Xcode integrates with SwiftPM to provide support for including packages in iOS, macOS, watchOS, and tvOS applications. The SourceKit-LSP project leverages libSwiftPM and provides Language Server Protocol implementation for editors that support LSP. -
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clojure-lsp
Clojure & ClojureScript Language Server (LSP) implementation
Clojure‑LSP provides a Language Server Protocol server for Clojure and ClojureScript. It statically analyzes code to offer rich editor features such as autocomplete, go-to-definition, find-references, renaming, code actions, refactorings, linting, formatting, code lens, semantic highlighting, call hierarchy, and Java interop support. Works across editors via LSP clients. -
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Eclipse GLSP
Graphical language server platform for building web-based diagram
The Graphical Language Server Platform (GLSP) is an extensible open-source framework for building custom diagram editors based on web technologies. Alongside an extensible client framework and a server framework, GLSP provides a language server protocol (LSP) for diagrams. With that, GLSP enables the development of modern, web-based diagram editors, whereas the heavy lifting, such as loading, interpreting, and editing according to the rules of the modeling language, is encapsulated in the server. GLSP provides integration layers, to use GLSP editors seamlessly in web pages, Eclipse Theia, VS Code and even Eclipse desktop. GLSP provides the perfect basis for the efficient development of web-based diagram editors including edit functionality, layouting, shapes, palettes and everything else you expect from a powerful, modern diagram editor. GLSP doesn't hide the underlying rendering technologies, such as Eclipse Sprotty, SVG, and CSS. -
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Elm Plugin for Visual Studio Code
Improving your Elm experience since 2019
Errors and pieces of information when changing code and when saving (Control + S) Format on save (Control + S) (Make sure you also enable the "Editor: Format on Save" setting for this to work). Suggests completions and snippets (Control + Space) Test explorer integration. Lists all references to a type alias, module, custom type or function (Alt + Shift + F12) Jump to the definition of a type alias, module, custom type or function. Shows type annotations and documentation on hover for type alias, module, custom type or function. Rename a type alias, module, custom type or function (F2) Browse file by symbols (Control + Shift + O). Browse the workspace by symbols (Control + Shift + R) Codelenses show how many times you call a function and if it's exposed or not. -
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Objeck
Objeck is a modern object-oriented programming language
General-purpose object-oriented and functional programming language. Designed to be intuitive, lightweight, cross-platform and fast. The Objeck compiler produces two types of binaries. The first is an executable and the second type is a library. Libraries can be linked into executables by passing the names of libraries to the compiler. Objeck can be built for a variety of targets. The language is implemented in C++, assembly (i.e., generated machine code) and assisted by code generators for bindings to SDL2 and GTK 3/4. -
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cquery
C/C++ language server supporting multi-million line code base
C/C++ language server supporting multi-million line code base, powered by libclang. Emacs, Vim, VSCode, and others with language server protocol support. Cross-references, completion, diagnostics, semantic highlighting, and more. cquery is a highly-scalable, low-latency language server for C/C++/Objective-C. It is tested and designed for large codebases like Chromium. cquery provides accurate and fast semantic analysis without interrupting workflow. cquery implements almost the entire language server protocol and provides some extra features to boot. cquery is able to respond to queries quickly because it caches a huge amount of information. When a request comes in, cquery just looks it up in the cache without running many computations. As a result, there's a large memory overhead. For example, a full index of Chrome will take about 10gb of memory. If you exclude v8, webkit, and third_party, it goes down to about 6.5gb. -
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ALE
Check syntax in Vim/Neovim asynchronously and fix files
ALE is an asynchronous linting and fixing engine for Vim and Neovim that keeps feedback flowing without blocking your editor. It runs external linters and formatters in the background as you type or save, streaming diagnostics into the sign column and statusline. The project focuses on breadth and practicality: dozens of languages work out of the box, and configuration is usually a matter of selecting tools you already use on the command line. ALE can also act as a lightweight Language Server Protocol client, providing go-to-definition, hover, and code actions through LSP servers when available. Its fix-on-save pipelines and formatter integration help enforce team style guides reliably and repeatably. For large codebases and slower linters, ALE’s job queueing and smart debouncing prevent UI hiccups while still surfacing timely results.
