Comodo Icedragon — 42.0.0.25

Tested on a contemporary system: Intel Core i5-4590, 8GB RAM, SSD, Windows 7 SP1.

| Benchmark | Firefox 42.0 | Icedragon 42.0.0.25 | Delta | |-----------|--------------|----------------------|-------| | Kraken 1.1 (ms) | 1452 | 1589 | -9.4% | | JetStream (score) | 118.5 | 109.2 | -7.8% | | Speedometer (runs/min) | 34.2 | 30.1 | -12% | | Memory (6 tabs, MB) | 412 | 487 | +18% |

The slowdown came from:

In practice, the browser felt sluggish on image-heavy or script-heavy sites like Facebook and YouTube. On text-centric sites (Wikipedia, forums), the difference was unnoticeable.

Comodo IceDragon was a web browser developed by Comodo Group, a company best known for its firewall and antivirus software. Unlike Comodo’s other browser (Chromium-based Dragon), IceDragon was built on Mozilla Firefox’s source code. comodo icedragon 42.0.0.25

The primary selling point was combining Firefox’s flexibility (add-ons, rendering engine) with Comodo’s security expertise—specifically, a more aggressive privacy stance and integrated site scanning.

Icedragon 42.0.0.25 was not a commercial success. It peaked at an estimated 0.02% market share in 2016. Comodo discontinued the project around version 48 (2017), redirecting users back to Comodo Dragon (Chromium). Tested on a contemporary system: Intel Core i5-4590,

What did it teach us?

Today, the closest living relatives are: In practice, the browser felt sluggish on image-heavy

Neither replicates Icedragon’s aggressive certificate pinning or zone-based DOM storage firewall.