Kerbal Space Program
2,278 Mods
Kerbal Planetary Base Systems
1M DownloadsParts for bases on other planets. Includes Habitats, Greenhouse, support for Life Support mods and much more.
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
OPT Space Plane Parts V2.0
664k DownloadsLarge, Sleek Spaceplane Parts!
[1.1.3] Astronomer's Visual Pack - BEYOND KERBAL
664k DownloadsAuroras, UHD clouds, sand storms, lightning, HD particle textures, sun flare, high altitude clouds, and much more... All bodies now carry an extremely different mood to them and are very pleasing to explore and look at.
Near Future Spacecraft Parts
631k 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
502k DownloadsLarge trusses, new docking ports, multi-adapters and radial attach points for spacecraft construction
Near Future Launch Vehicles
460k 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.
Stockalike Station Parts Expansion Redux
391k DownloadsBuild stations with inflables, centrifuges and much much more!
Kerbal Reusability Expansion
280k DownloadsLanding Gear, Grid Fins and more!
Mark IV Spaceplane System
245k DownloadsA stockalike spaceplane fuselage capable of lifting 2.5m parts
Near Future Aeronautics
243k DownloadsAdvanced aircraft engines and accessories
Firespitter
199k DownloadsPropeller plane and helicopter parts
Stockalike Station Parts Expansion
163k DownloadsSpace station and surface base parts [just updated with more parts]
Unofficial B9 Aerospace REPACK
134k DownloadsMy "Unofficial" repack of B9 Aerospace that Just Works (TM)
SpaceY Expanded (SYX) by NecroBones
120k DownloadsAn optional add-on for the SpaceY Heavy Lifters parts pack, adding 7.5m parts, engines, and other accesories.
The Maritime Pack
118k DownloadsYachts, Cargo Ships, Carriers, Paddlewheelers, RoRo's, Submarines, Tug Boats and lots more.