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Default Folder X vs SigmaOS

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

Option A
Default Folder X

Default Folder X

Productivity

Open and save dialogs, supercharged.

Default Folder X enhances every macOS open/save dialog with recent files, favorites, and tagging — solo-developed by St. Clair Software since 1992.

Founder
Jon Gotow
Founded
1992
Team
1-10
Listing
Free (nofollow)
Listed
May 2026
View Default Folder X →
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

Default Folder X alternatives →SigmaOS alternatives →