Startup Spotlight
← Back to directory

Compare

SigmaOS vs Roam Research

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

Option A
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 →
Option B
Roam Research

Roam Research

Productivity

A note-taking tool for networked thought.

Roam pioneered bi-directional linking in personal note-taking — a graph database for your brain, with a cult following among researchers and writers.

Founder
Conor White-Sullivan
Founded
2019
Team
1-10
Listing
Free (nofollow)
Listed
May 2026
View Roam Research →

See more alternatives

SigmaOS alternatives →Roam Research alternatives →