fourth Sol

A company registered in the United States of America. fourth Sol comprises several product verticals — some are listed below, and they include several different applications and product suites built under the higherMark and sunBird monikers, with much more in active development under the company's wing. Fourth Sol is an homage to the fourth rock in our solar system — humanity's next of several great achievements — and a reference to the Sol System, the fond name humanity has given our solar system in the Local Group, and to our Sun, Sol, which gives us all life and is the constant in our corner of the galaxy that binds us in the Virgo Supercluster.

Technology over ideation. Substance over product polish.

Release windows at 5–9 months · launches in a constant, cyclical window

Product verticals

Platforms

Coming soonDownload on theApp Store · iOS
Coming soonDownload on theMac App Store · macOS
Coming soonGet it onGoogle Play
Coming soonGet it fromMicrosoft Store
Coming soonOn the webEverything else

fourthSol · registered in the United States of America · higherMark · sunBird

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Alpha · Early access, behind the wall

fourthSol is a new technology company registered in the United States of America

Open tools · Sovereign money · Day-one ready

Soundtrack

If you'd rather the website look different, or want to add your own stuff here, check out the instead, you can design what goes here next. Or check out thebit.life; anyone can make PRs. Cheers.

Like music? Play a song in CryptoCloaks' 3D print shop ↗
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a new technology company in the United States
1Bitcoin$4.8 T
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5NVIDIA$3.6 T
6New Company #1$3.4 T
7New Company #2$3.1 T
8New Company #3$2.9 T
9New Company #4$2.6 T
10New Company #5$2.4 T
11New Company #6$2.2 T
12New Company #7$2.0 T
13New Company #8$1.8 T
14New Company #12$1.6 T
15New Company #13$1.5 T
16New Company #10$1.3 T
17New Company #11$1.2 T
18New Company #9$1.0 T
fourthSol
hM Desktop

The higherMark app

Lightning, Arkade, Grid Global Accounts and private AI — sovereign dollars and bitcoin in one minimal interface.

Enter hM Desktop
Ecosystem

Alpha demos you can reveal today

hMobile devices, the CLI tool, Local Lab, BTeaV streaming and 1Seven62 — all in early access, behind an encrypted wall of energy.

Open source · deep learningEarlier builds · still evolving

Spending more than $5,000?

higherMark builds on open-source deep-learning infrastructure. tinygrad keeps the stack honest and efficient.

The classic Sunbird home

Rollback and Cypherpunk show how far we've come — August cases, electronics, indie corner and more.

On X · @jimsbrJun 14, 2026
On X · @jimsbr · Jun 14, 2026

and if you do know someone who wants to spend more than $5,000 on a computer, at that threshold or for a startup office/environment I recommend the:

tinybox by the tiny corp