Open

Open

by Poly

Polysystems

Open Source

Building powerful developer tools and libraries. Free and open for everyone.

Poly MCP

A comprehensive MCP (Model Context Protocol) server with extensive tooling for filesystem operations, diagnostics, scripting, time management, network utilities, context handling, git operations, and user input. ~50 tools and expanding.

MCPFilesystemGitNetworkTools
Rust

Silent Shell Script

A modern, fast scripting language that combines Python-like syntax with powerful shell integration. Written in Rust for speed and reliability.

ScriptingShellRustLanguage
Rust

x-http

An instant HTTP API testing suite - type-safe alternative to Postman/curl that integrates seamlessly with your Rust codebase.

RustHTTPTestingAPI
Rust

cargo-why

A cargo subcommand that explains why dependencies are in your tree.

RustCargoDependenciesCLI
Rust

tool-useful

Function calling and tool orchestration framework for Rust AI applications. Build robust AI agents with powerful tool integration.

AIToolsRustFramework
Rust

gitent

Git but for agents - track, commit and rollback changes made by AI agents in the codebase. Version control designed for autonomous systems.

GitAIAgentsVersion Control
Rust

manifold

Differential geometry and optimization on Riemannian manifolds, for machine learning and physics simulations. High-performance numerical computing.

MathMLOptimizationGeometry
Rust

More Coming Soon

We're constantly building new tools and libraries for the developer community.