Kerbal Space Program
2,283 Mods
Utility and Navigation
Miscellaneous
Science
Parts Pack
Propulsion
Structural and Aerodynamic
Gameplay
Resources
Command and Control
Ship Systems
Sub-Assembly
Physics
Twitch Integration
KSP Interstellar Extended
1M DownloadsKSP Interstellar Extended aims to continue in providing a realistic road to the stars.
Near Future Propulsion
1M DownloadsAdvanced ion/plasma thrusters, VASIMR engines and two new fuel types with a stockalike aesthetic
B9 Aerospace 5.2.8
754k DownloadsEssential and enormous set of structural, control, propulsion, command and utility parts for aerospace designs.
KW Rocketry v2.7
743k DownloadsThe comprehensive launch vehicle construction pack
Near Future Electrical
703k DownloadsNuclear reactors, capacitors and large batteries with a stockalike aesthetic
OPT Space Plane Parts V2.0
677k DownloadsLarge, Sleek Spaceplane Parts!
Near Future Spacecraft Parts
655k DownloadsStockalike spacecraft parts with a futuristic look
Airplane Plus
605k DownloadsAdds plane parts. Images are on the album.
Kerbal Aircraft Expansion (KAX)
523k DownloadsA pack of select vanilla-inspired parts for your aircrafting needs!
Near Future Construction
517k DownloadsLarge trusses, new docking ports, multi-adapters and radial attach points for spacecraft construction
Near Future Launch Vehicles
482k DownloadsExtra-large launch vehicle parts
SpaceY Lifters (SYL) by NecroBones
406k DownloadsParts for large lifting rockets, 5m rocket parts and large SRBs, and matching decouplers for Kerbal Space Program.
Kerbal Reusability Expansion
280k DownloadsLanding Gear, Grid Fins and more!
Near Future Aeronautics
265k DownloadsAdvanced aircraft engines and accessories
Fuel Tanks Plus (FTP) by NecroBones/Orvidius
263k DownloadsA variety of additional rocket fuel tanks, mostly larger tanks, with several historically inspired colors and styles.
Mark IV Spaceplane System
245k DownloadsA stockalike spaceplane fuselage capable of lifting 2.5m parts
Kerbal Atomics
221k DownloadsAdditional nuclear engines for KSP
Cryogenic Engine Pack
204k DownloadsHigh Isp chemical rockets!
Firespitter
199k DownloadsPropeller plane and helicopter parts
Far Future Technologies
183k DownloadsOptimistic but generally viable future spacecraft technologies.