Kerbal Space Program
2,268 Mods
KSP Interstellar Extended
1M DownloadsKSP Interstellar Extended aims to continue in providing a realistic road to the stars.
Near Future Propulsion
986k DownloadsAdvanced ion/plasma thrusters, VASIMR engines and two new fuel types with a stockalike aesthetic
KW Rocketry v2.7
743k DownloadsThe comprehensive launch vehicle construction pack
B9 Aerospace 5.2.8
723k DownloadsEssential and enormous set of structural, control, propulsion, command and utility parts for aerospace designs.
Near Future Electrical
685k DownloadsNuclear reactors, capacitors and large batteries with a stockalike aesthetic
OPT Space Plane Parts V2.0
646k DownloadsLarge, Sleek Spaceplane Parts!
Near Future Spacecraft Parts
620k DownloadsStockalike spacecraft parts with a futuristic look
Airplane Plus
605k DownloadsAdds plane parts. Images are on the album.
Kerbal Aircraft Expansion (KAX)
519k DownloadsA pack of select vanilla-inspired parts for your aircrafting needs!
Near Future Construction
489k DownloadsLarge trusses, new docking ports, multi-adapters and radial attach points for spacecraft construction
Near Future Launch Vehicles
451k 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!
Fuel Tanks Plus (FTP) by NecroBones/Orvidius
251k DownloadsA variety of additional rocket fuel tanks, mostly larger tanks, with several historically inspired colors and styles.
Mark IV Spaceplane System
242k DownloadsA stockalike spaceplane fuselage capable of lifting 2.5m parts
Near Future Aeronautics
234k DownloadsAdvanced aircraft engines and accessories
Firespitter
199k DownloadsPropeller plane and helicopter parts
Kerbal Atomics
189k DownloadsAdditional nuclear engines for KSP
Cryogenic Engine Pack
184k DownloadsHigh Isp chemical rockets!
Far Future Technologies
149k DownloadsOptimistic but generally viable future spacecraft technologies.