Kerbal Space Program
2,277 Mods
Utility and Navigation
Miscellaneous
Science
Parts Pack
Propulsion
Structural and Aerodynamic
Gameplay
Resources
Command and Control
Ship Systems
Sub-Assembly
Physics
Twitch Integration
BoxSat
13.7k DownloadsIt's a satellite, in a box!
Antennas (ANTS)
13.7k DownloadsAdditional Antennas for Remote Tech, Antenna Range and Telemachus(v 1.2)
Improved Chase Camera v1.5.1
13.6k DownloadsA better chase camera that follows your velocity vector in atmospheric flight.
Kerbalised Soyuz Mod
13.5k DownloadsKerbalised Soyuz Mod
Nehemia Engineering Orbital Science
13.5k DownloadsA collection of orbital science mods for the early, mid, and late game.
Kerbal Exoplanets
13.3k DownloadsA star system pack that adds stars and more planets to the game.
CapCom - Mission Control On The Go
13.3k DownloadsManage, accept, decline, and cancel contracts outside of the Mission Control Center.
Daedalus v6
13.2k DownloadsDaedalus spaceship from Stargate, only need v6 or higher as its stand alone
ExperimentTracker
13.1k DownloadsLittle mod that helps deploying science experiments.
Athlonic Electronics / LCD - Launch CountDown
12.8k DownloadsUpgrade your KSP stock TT18-A Launch Stability Enhancer (aka launch clamp) with a countdown feature.
Impossible Innovations /L
12.6k DownloadsThis mod adds some late-game engines and tanks to the game.
Planes With Purposes (PWP)
12.4k DownloadsThis mod adds a series of plane contracts
Soundtrack Editor
12.4k DownloadsAllows adding, removing and replacing music in KSP. Includes stockalike tracks.
5dim Military contract pack
12.3k DownloadsPlay a military career with more than 30 missions
Goodspeed Aerospace (GOOD)
12.3k DownloadsThis parts pack add-on is an assortment of vaguely stock-alike parts, many tweakable, most requiring no additional texture memory (they mostly have unique models, but reuse stock part textures to save memory and achieve a stock-alike look)
James Webb For Kerbal
12.1k DownloadsJames Webb Space Telescope For Kerbal
Psycho Mechanic Industries Fuel Gen pack
12.1k DownloadsA simple pair of parts that when used with a large power suply, allow for barely cheaty fuel reserves.
Structure Pack
11.9k DownloadsAssortment of Structual parts for your Station building needs.
MK-1 Stockalike open cockpit (inline external seat)
11.9k DownloadsIf you built rocket from vintage Sci-Fi comics or just a biplane, this things make it better
Speedy's Hex Truss System
11.8k DownloadsInspired by Semni's Original mod. This is a Tri Hexagonal Truss System.