Who should use CF-Predictor?

CF-Predictor is a consumer product built for codeforces competitive programmers.

Is CF-Predictor free?

Yes — CF-Predictor is free to use.

What platforms does CF-Predictor run on?

CF-Predictor runs on the web and embeddable surfaces.

Is CF-Predictor still maintained?

Unverified. CF-Predictor has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to CF-Predictor?

Similar projects tracked by PulseGate include CF Local Predictor, CF Analytics, and CF Filtered-Rating Heatmap.

Who makes CF-Predictor?

CF-Predictor is developed by Wsl_F.

When did CF-Predictor launch?

CF-Predictor first shipped in 2017.

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CF-Predictor

Name: CF-Predictor
Author: Wsl_F

mozilla.orgBrowser DevTools & extensions

CF-Predictor is a Firefox extension for Codeforces users that modifies contest standings pages to show approximate rating changes for contestants. It provides estimates during and after contests so competitive programmers can track likely rating outcomes before official updates.

FreeWebEmbeddable

Visit mozilla.org

1alternative

5features

2017since

Overview

5 features

CF-Predictor sits in PulseGate's Browser DevTools & extensions category. It focuses on waiting for Codeforces rating updates and estimating contest rating changes. It is built as a consumer product for codeforces competitive programmers. CF-Predictor costs nothing to use. It runs on the web and embeddable surfaces.

It is developed by Wsl_F, and it first shipped in 2017. Among its 5 catalogued features are rating predictions, contest standings, and live deltas. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Rating predictions
Contest standings
Live deltas
Post-contest estimates
Codeforces integration

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed9 Sept · 02:16 UTC
CF-Predictor verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about CF-Predictor

What is CF-Predictor?: CF-Predictor focuses on waiting for Codeforces rating updates and estimating contest rating changes. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use CF-Predictor?: CF-Predictor is a consumer product built for codeforces competitive programmers.
Is CF-Predictor free?: Yes — CF-Predictor is free to use.
What platforms does CF-Predictor run on?: CF-Predictor runs on the web and embeddable surfaces.
Is CF-Predictor still maintained?: Unverified. CF-Predictor has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to CF-Predictor?: Similar projects tracked by PulseGate include CF Local Predictor, CF Analytics, and CF Filtered-Rating Heatmap.CF Local Predictor CF Analytics CF Filtered-Rating Heatmap
Who makes CF-Predictor?: CF-Predictor is developed by Wsl_F.
When did CF-Predictor launch?: CF-Predictor first shipped in 2017.

At a glance

Pricing: Free
Platforms: Web
First seen: 9 Sept 2026
Built for: Codeforces competitive programmers
Model: B2C
Solves: Waiting for Codeforces rating updates and estimating contest rating changes.

Registered as

Firefox Add-ons: cf-predictor

Developer

Wsl_F

Index record

Indexed: 9 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 9 Sept 2026

Identity audit (13)

Slug: cf-predictor-mozilla-org
Lifecycle state recorded: 9 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 9 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 9 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/cf-predictor

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