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iA Writer vs SigmaOS

Side-by-side comparison of two indie startups from the Startup Spotlight directory.

Option A
iA Writer

iA Writer

Productivity

The Markdown writing app you'll love using.

iA Writer is a distraction-free Markdown editor focused on craft and clarity — used by writers, journalists, and developers.

Founder
Oliver Reichenstein
Founded
2005
Team
1-10
Listing
Free (nofollow)
Listed
May 2026
View iA Writer →
Option B
SigmaOS

SigmaOS

Productivity

The web is your operating system.

SigmaOS is an indie macOS browser built around workspaces and split-screen — a quieter Arc alternative from a small Berlin team.

Founder
Mahyad Ghassemibouyaghchi
Founded
2020
Team
1-10
Listing
Free (nofollow)
Listed
May 2026
View SigmaOS →

See more alternatives

iA Writer alternatives →SigmaOS alternatives →