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Todoist vs SigmaOS

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

Option A
Todoist

Todoist

Productivity

Clear your mind and accomplish more.

Todoist is a beautifully simple task management app trusted by millions for personal and team productivity.

Founder
Amir Salihefendić
Founded
2007
Team
201-500
Listing
Free (nofollow)
Listed
May 2026
View Todoist →
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

Todoist alternatives →SigmaOS alternatives →