Sharp11 – Music Theorization and Improvisation Engine
Sharp11 – Music Theorization and Improvisation Engine launched on May 14, 2016 with 113 votes, #387 of 3,824 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 10 years on.
In plain words
Sharp11 is a music theory tool with a focus on jazz, offering both a web application and an API for developers. It helps musicians and programmers work with music theory concepts and improvisation techniques. The platform is designed for those interested in jazz who want to explore theory through practical tools rather than traditional learning methods.
written from the facts on this page · September 2026
From the sources
Sharp11 is a music theory multitool with a jazz focus. Developers are encouraged to check out the Sharp11 API upon which this web app isfrom julianrosenblum.com
Does a similar job
all alternatives →
Soundslice – YouTube + synced guitar tabs + HTML52012 · soundslice.com · ▲492Learn music better with our living sheet music.
Guitar Dashboard – Open source music theory explorer for guitarists2018 · guitardashboard.com · ▲590A free, open source, music theory explorer for guitarists. Discover how scales and modes map to the fretboard and how chords work within scales.
- APA piano chord reference tool2022 · pianochord.io · ▲206
A place to explore piano chords freely and interactively
I made a tool for learning scales, chords, and how to combine themMay 2026 · projects.alesh.com · ▲36This started out when I vibe-coded a guitar scale fingering generator. It came out pretty good, and I started adding stuff to it: chords, then how chords and scales interact. Then I added charts for other instruments I mess around with: piano, cello, alto recorder. There's a complexity toggle to go from basic harmony to extended/experimental stuff. It's honestly still mostly a toy, but I thought other people might be interested in playing with it. Source is on github, so it's easy enough to run locally and fork. https://github.com/aleshh/gtr-scales
More life & fun this month
the category →
A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.
Life & fun · 2d ago · permit.petercai.com
- IV
Life & fun · 14d ago · tanzaniaeducationproject.org
Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.
Life & fun · 15d ago · bigwords.page
Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.
Life & fun · 9d ago · guitoro.com
Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.
Life & fun · 13d ago · carrierexplode.com
Life & fun · 23d ago · space.bl2.net
Source: Show HN post ↗
Launched alongside, May 2016
the whole month →
Gboard by Google▲1,207Google Search, GIFs, emojis & more—right from your keyboard
Life & fun · 2016 · apps.apple.com
