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ddcci

Free#20 of 24 in Monitor Control Software

ddcci: A focused open-source CLI for querying and controlling compatible Linux monitors. Ranked #20 of 24 in Monitor Control Software by our editors (6.4/10); pricing: Open source; best for linux developers needing low-level DDC/CI.

6.4/10Editor score

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ddcci6.4 View ddcci

At a glance

Editor score
6.4 / 10
Pricing
Open source
Best for
Linux developers needing low-level DDC/CI
Paid from
Free
Supported platforms
Linux
Facts checked
20 Sep 2026

Where it wins
- Queries EDID, capabilities, and available monitor controls
- Reads and writes monitor values, including brightness
- Supports input selection and saved settings where supported
Where it doesn't
- Linux-only platform support
- Requires comfort with terminal commands and Linux I2C devices
- Does not provide profiles, scheduling, or desktop-oriented features

Our verdict on ddcci

ddcci is an open-source Linux command-line utility for communicating with compatible monitors through DDC/CI. It is designed for developers and technically comfortable Linux users who want direct access to monitor controls rather than a desktop-focused interface. The utility can discover monitors, query EDID and DDC/CI capabilities, inspect individual controls, read values, write new values, adjust brightness, select an input where supported, and save monitor settings. It is distributed as GPL software and available as source code through its project repository.

Its main strength is the breadth of low-level monitor communication in a focused command-line tool. The published feature set covers both discovery and control: users can identify available monitors and controls, inspect capabilities, then apply values through DDC/CI. Input selection is included where supported, and the Samsung DDC/CI enable command addresses a documented monitor-specific requirement. This makes ddcci a practical fit for Linux workflows that need scripting, terminal access, or direct interaction with monitor hardware through Linux I2C devices.

The trade-off is its narrow scope. ddcci concentrates on DDC/CI communication and control instead of profiles, scheduling, automatic brightness, or desktop-oriented features. Its platform coverage is Linux, and its command-line approach assumes familiarity with terminal commands and the underlying device model. Choose ddcci when low-level DDC/CI discovery and control matter most, especially for brightness, input selection, capability queries, and saved settings. Choose another monitor-control tool if you want a graphical desktop experience, automated scheduling, verified profiles, or automatic brightness management.

Your product? Our editors can test ddcci in depth and publish a review, labelled as paid · from $149/mo →

ddcci pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on bhuvanchandradv.github.io

ddcci fact sheet

Free plan	Not verified
Paid from	Free
Supported platforms	Linux
DDC/CI control	Yes
Input switching	Yes
Monitor profiles	Not verified
Settings scheduling	Not verified
CLI or API access	Yes
Auto brightness	Not verified
Deployment	Self-hosted
Platforms	Linux
Support	Docs
Built for	Solo, Small business (editorial estimate)
Pricing	Open source
Website	bhuvanchandradv.github.io
Facts checked	20 Sep 2026

Alternatives to ddcci

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Featured on iTechGuides

ddcci is listed in our Monitor Control Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update