Services
3.6K indexed services
Astronomy Magazine
Astronomy news, sky events, equipment reviews, and astrophotography tips
Sky & Telescope
Astronomy magazine — observing guides, equipment reviews, science news, and interactive sky chart
CircuitLab
Online circuit simulator — design, simulate, and share electronic circuits in the browser
GEDmatch
DNA comparison and genealogy — upload raw DNA from any testing company, find matches across platforms
AstroBin
Astrophotography community — upload, share, and discuss deep-sky and planetary images
Soundslice
Interactive sheet music and tablature — synced notation with recordings, slow down, and loop
KiCad
Free open-source EDA — schematic capture, PCB layout, 3D viewer, and BOM management
Hooktheory
Music theory learning and songwriting — interactive books, chord database, and melody tools
Instructables
DIY project community by Autodesk — step-by-step tutorials for crafts, electronics, cooking, and more
Yousician
Music learning app — guitar, piano, bass, ukulele, and singing with real-time feedback
Hackster.io
Hardware project community — IoT, Arduino, Raspberry Pi, AI, and robotics project tutorials
MuseScore
Free sheet music and composition — notation software, community scores, and playback