Hisashi SpaceHi, I'm Hisashi.
Eleven products, one person.
Six Mac apps and five on the web, all built by me. The oldest is @SOHO, a freelance marketplace I built in 2004 that now has 300,000 members and still exactly one developer. Everything else started as something I needed to keep that running before lunch.
- 6Mac apps
- five shipped, one on the way
- 6web products
- all running in production
- 1developer
- that would be me
Writing
All writing
October 20, 2026 · 3 min read
How to Remove Background Music and Keep Only the Voice. With Prompts for Claude Code, Codex, Grok and Antigravity
I pulled just the narration out of my old TikTok videos with Demucs, a free model from Meta, in about 16 seconds on a Mac. How I asked Claude Code, and a step by step prompt for Codex, Grok and Antigravity.
October 16, 2026 · 5 min read
Thanks to AI? Links to my site started arriving from an unexpected route
I traced every external link to my site in Search Console. Strangers' articles had started listing my posts in their References sections. Where they come from, what they look like, and whether they help search at all.
October 13, 2026 · 5 min read
Cloudflare split "Block AI Bots" into Search, Training and Agent. I checked all 26 of my sites through the API
Cloudflare's AI crawler setting is now three categories: Search, Training and Agent. What changed, how I read the bot_management settings for 26 zones through the API, and how a site that wants to be cited in AI answers should set them.
On the Mac
All apps
SpaceDeck
Mission control for every app you live in.
macOS · $129 one-time
Kagemusha
Turn any website into a standalone macOS app.
macOS · Free for 3 apps
Caltimate
A native Mac calendar that syncs with Google Calendar.
macOS · Free tier
Koffret
Keep only the menu bar icons you actually use.
macOS · $14.99 one-time
Atriens
File management for working with AI.
macOS · Free tier
On the web
Running for years, in Japanese. The oldest of them pays for everything else.
@SOHO
A freelance marketplace with 300,000 members.
Rizaflow
Bookings for businesses that get paid in person.
Pinateca
Project management with eight kinds of board.
Halict
From form submission to answered, in one screen.
Koeamp
Record once, publish everywhere.
Tsudoo
One place for a class, a club or a neighbourhood.
What shipped, and what broke
One letter at a time, from a one-person software company. No schedule, no filler, and real numbers when there are any.
SubscribeHisashi Space
Founder of @SOHO · Indie hacker · Worked abroad from 2011 to 2023
The usual worry with an app from one person is that the person disappears. I started @SOHO in 2004 and have run it alone ever since, through every macOS release in between. I answer the support mail and get up at three in the morning when the server does something strange.
More about me