Products

C4

Open source The C4 operator: every tool’s folders are just a view.

cccc.io SourceMITProductivity & Collaboration / File Storage & Sync

AI Benchmark
Desktop
Mobile
Monthly visits
<5K
Oct 2026
Public revenue
Undisclosed
No public revenue evidence yet
Entry price
Free
No monthly subscription pricing
Creators
joshuak
GitHub @avalanche-io
Launched
8mo ago
2026-03-31 · Est.

Traffic

Last 12 months
Monthly visitsData through Oct 2026
Events1 marketing move

Marketing moves

Launches, search & content, referrals, promotions

  • Launched on Show HN (4 pts · 1 comments)Launch

    C4 – Separate file description from file content — C4 is a standardized identification system that separates file description from file content so they can be stored or transmitted independ…

    Mar 31 · 8mo agoLaunch page

Third-party reviews & case dossiers

Acquisition breakdowns, engineer reviews & open-source metrics
Show HN
2026-03-31Source
Post excerpt:
C4 is a standardized identification system that separates file description from file content so they can be stored or transmitted independently. You can send a small text-based filesystem description by email while the file content is fulfilled by content ID from any source. Running c4 on any path produces a c4m file and stores the content: $ c4 ./projects/H

Open Source & Agent Ecosystem

GitHub · MCP / Skill
Avalanche-io/c4
Last commit 2026-10-03
GitHub Stars
Public repo
Forks
—
License
MIT
Primary language
Go
Browse peer open-source projects →

Agent, MCP & Developer Integration

CLI / SDK
Integration docs
Ecosystem & integrations:
HomebrewGoPythonTypeScriptSwiftC
Exposed tool capabilities:
File Version ControlC4 stores content automaticallySee it instantly
Browse developer & CLI tools →

Traffic sources

Oct 2026

Traffic breakdown

Channels

  • Direct33%
  • Organic Search32%
  • Referrals14%
  • Social6%
  • Other15%

Countries

  • Italy62%
  • United States38%

Search

Domain authority —Domain registered 2013-11-16

No search keyword data for this website yet.

Traffic data: Vaneform

Pricing

Pricing page not identified yet, or no public pricing listed.

Pages & changes

Tracked since 2026-07-31

Key pages

Weekly snapshots
cccc.io/ Snapshot 2026-11-04

Changes

No pricing, plan, or positioning changes detected since tracking started.

Questions & evidence

How much website traffic does C4 get?
Vaneform estimates <5K website visits in 2026-10. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
What is C4 and what platforms does it support?
C4 is catalogued under File Storage & Sync: Open source The C4 operator: every tool’s folders are just a view.. Supported platforms: CLI / SDK.
Is C4 open source?
C4 has a public repository (https://github.com/Avalanche-io/c4) under the MIT license.Source

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Productivity & Collaboration / File Storage & Sync

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