𝑛-Body and Extended Body Gravitation for Kerbal Space Program

Remote Procedure Calls for Kerbal Space Program

Multiplayer mod for Kerbal Space Program (KSP)

Nexus AutoDL is an autoclicker (a.k.a., autodownloader, bot) that helps automate downloading mods from Nexus Mods

Community developed continuation of Kerbal Space Program's RemoteTech mod.

Real Scanning, Real Science, at Warp Speed!

Hundreds of Kerbals were killed in the making of this mod.

An add-on for Kerbal Space Program (KSP) to enable virtual reality.

Powered Explicit Guidance Ascent System - a KSP & RO autopilot using the Space Shuttle guidance algorithm, UPFG

KSP Trajectory Optimization Tool

Non-cooperative satellite operations challenge problems implemented in the Kerbal Space Program game engine

Python library for space enthusiasts

MOARdV's Avionics Systems for Kerbal Space Program - a new generation of IVA enhancement.

KSP Delta-V Planner is a tool to calculate your rocket Delta-V for interplanetary travels in Kerbal Space Program. Also known as KSP Delta-V Calculator.

kOS library that enables scripted orbital transfer window planning and vessel rendezvous for the the game Kerbal Space Program

DMagic Orbital Science: KSP science parts and modules.

Kerbal Markup Lister - A persistence file editor for Kerbal Space Program

An online tool providing automatic design of trajectories with multiple gravity assists for Kerbal Space Program.

Calculate Optimal Design of Rocket Propulsion Systems (Kerbal Space Program).

Telemetry project for Kerbal Space Program. The program uses a server that is running on the KSP side and a client which is capable of running both the KSP side computer or any other one over a web browser.

A revamp of the Kerbal Simpit Mod for KSP

A language server for the Kerboscript (kOS) a language for Kerbal Space Program

A space-navigational aide for Kerbal Space Program

Ignition is a game inspired by Kerbal Space Program

Exclusive add-ons with hundreds of asteroids, comets, moons and overhauls RSS

Ruby client library for kRPC

Recall for KSP blunders, screw ups and borks.

Parts pack for Kerbal Space Program that consists of a stockalike Service Module and accessories inspired by NASA’s Orion MPCV, and designed specifically for use with the stock Mk1-3 Command Pod.

Online tool for Kerbal Space Program that helps players determine delta-v requirements for a mission, and what type of comms dishes a certain satellite requires.

A Mod Manager for Kerbal Space Program on macOS