GitHub Repository

One language server per workspace, shared by every editor and agent. Works with rust-analyzer, gopls, tsserver, clangd, pyright, jdtls and more: two sessions on one workspace stop paying for two indexes.

1 starsRust

Drey, open source LSP multiplexer so you have to buy less RAM

Name: Drey, open source LSP multiplexer so you have to buy less RAM
Availability: InStock
Author: mdjanic

by mdjanic·Jul 22, 2026·1 point·0 comments

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AI Analysis

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Cuts rust-analyzer memory usage by 70% by sharing one index across all clients.

Strengths

•Shim-based installation requires zero config changes to existing editors or AI agents.
•Handles divergent unsaved edits per client while sharing the same underlying server process.
•Workspace containment logic allows opening sub-crates without re-indexing the whole monorepo.

Weaknesses

•Git worktrees and branches remain separate, limiting sharing across complex repo structures.
•Single point of failure: if the daemon crashes, all connected clients lose language features.

Post Description

I got annoyed with the many LSP instances running and the memory they take, so wrote this. Hopefully it's useful - let me know if you have any feedback!