Fellou vs InfuseOS: Agentic Browser Execution vs Autonomous Productivity OS

A new execution surface in the browser vs a unified system-of-action across your work stack

2025 introduced a new gravity center for agents: agentic browsers.

Instead of relying on APIs and connectors, these products treat the browser itself as the universal action surface. Fellou fits this direction. InfuseOS is built around a different approach: executing work across your authenticated work stack with durable context and operational control.

What is Fellou?

Fellou is best understood as part of the agentic browser / computer-use category:

• The browser becomes the agent’s environment
• The agent can attempt tasks by navigating websites and UI flows
• It can unlock “last-mile” execution even when an API is missing

The promise: broad reach, because many workflows happen in web apps.

What is InfuseOS? (custom to Fellou)

InfuseOS is designed as a work-native execution layer, not a browser-native one.

Rather than optimizing for “can the agent click through anything,” InfuseOS optimizes for “can the agent reliably move work forward across the tools teams run on” with the right guardrails: permissions, repeatable workflows, persistent context about stakeholders and projects, and continuity across recurring operating rhythms.

This makes InfuseOS especially strong for workflows that live across:

• inbox and calendar coordination
• documents and project artifacts
• task and follow-up systems
• team communications

The real difference (in one sentence)

Fellou expands what an agent can do via the browser; InfuseOS focuses on reliable cross-tool execution with persistent context and operational control.

First experience: a real-world test

Scenario: “No-API vendor workflow”

You want a system to:

1. Log into a vendor portal
2. Download a statement
3. Update a spreadsheet or tracker
4. Email accounting with a summary
5. Create a follow-up task and schedule a reminder

Using an agentic browser (Fellou-style)

• Strong when work happens inside web UIs without clean integrations
• Useful for “do what I would do in the browser”
• Can reach many surfaces quickly

Tradeoff: UI execution can be brittle (UI changes, multi-step auth, inconsistent page flows).

Using InfuseOS

• Strong when execution spans email, calendar, docs, tasks, and chat repeatedly
• Optimized for recurring operating rhythms and multi-domain outcomes
• Designed to retain context and execute with guardrails over time

Feature comparison: Fellou vs InfuseOS

Category

Fellou (agentic browser category)

InfuseOS

Core identity

Browser-based agent executor

Autonomous Productivity OS

Execution surface

Web UI navigation

Authenticated actions across work tools

Best at

Last-mile tasks where APIs are missing

Cross-domain workflows that need continuity and follow-through

Reliability profile

Can be brittle when UI changes

Designed for repeatable execution with control and continuity

Context

Often session and task oriented

Persistent context across people and projects

Ideal user

Power users with web-heavy workflows

Individuals and teams running ongoing operational work

Where Fellou is strong (why it’s a serious competitor)

1. Universal executor wedge The browser can reach workflows APIs do not.
2. Fast automation of ad hoc web tasks Useful for one-off “go do this on that site” tasks.
3. New execution surface Agentic browsers can become a daily driver if they own the interface layer.

Where InfuseOS differentiates

1. Work semantics over UI steps InfuseOS is built around work objects (threads, meetings, tasks, docs, stakeholders), not just navigation.
2. Persistent memory Designed to keep continuity across days and weeks, not just within a single session.
3. Operating rhythms Strong fit for scheduled, repeatable workflows (weekly updates, inbox triage, follow-ups, research monitoring).
4. Governance and control Designed to execute across authenticated systems with permissions and audit expectations.

Which should you choose?

Choose Fellou if you need:

• Automation in web tools without APIs
• A browser-native “do what I would do” agent experience
• Last-mile UI execution for ad hoc workflows

Choose InfuseOS if you want:

• Cross-domain execution across your work stack
• Persistent context and repeatable operating rhythms
• A system designed for controlled, reliable follow-through over time