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Browser Extensions · head to head

FireMonkey vs Nimbus Screenshot

FireMonkey logo

FireMonkey

Browser Extensions

User scripts and user styles in one Firefox extension

From
Free
Rated
-
Full reviewWebsite
Nimbus Screenshot logo

Nimbus Screenshot

Browser Extensions

Screen capture and video recording

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: FireMonkey firefox only, and requires a recent one: version 93 on desktop, 113 on Android.; Nimbus Screenshot nimbus Web has rebranded to FuseBase; nimbusweb.me now redirects to thefusebase.com, and the screenshot tool sits inside a broader client portal and AI workspace product
  • They diverge on capability: FireMonkey covers Scripts and styles together, Nimbus Screenshot covers Full page capture.
  • Prices and features above were last checked on 15 September 2026.

Where they differ

Only the attributes on which FireMonkey and Nimbus Screenshot actually diverge.

Attributes where FireMonkey and Nimbus Screenshot differ
AttributeFireMonkeyNimbus Screenshot
Pricing modelopen-sourcefreemium
PlatformsFirefoxChrome, Firefox, Edge, Opera
FoundedUnknown2014

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Browser Extensions).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in FireMonkey

  • Scripts and styles together
  • Monaco editor with ESLint
  • Unlimited client-side storage
  • Global injection
  • Notifications and clipboard
  • Firefox for Android

Only in Nimbus Screenshot

  • Full page capture
  • Area selection
  • Annotation tools
  • Video recording
  • Chrome support
  • Firefox support
  • Edge support
  • Opera support

What people use each for

The jobs each tool is most often brought in to do.

FireMonkey

  • Running user scripts and user styles without two separate extensionsnot Nimbus Screenshot
  • Restyling sites with CSS alongside scripted behaviour changesnot Nimbus Screenshot
  • Editing scripts in a full editor inside the browsernot Nimbus Screenshot
  • Injecting CSS globally across every sitenot Nimbus Screenshot
  • Managing a mixed library of scripts and styles from one dashboardnot Nimbus Screenshot

Nimbus Screenshot

  • Capturing full page and partial browser screenshotsnot FireMonkey
  • Recording screen video from a browser tabnot FireMonkey
  • Annotating captures before sharing themnot FireMonkey

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

FireMonkey

  • Firefox only, and requires a recent one: version 93 on desktop, 113 on Android.
  • Not a drop-in replacement for Greasemonkey, Tampermonkey or Stylus. The project says so itself, so an existing library may need adjusting.
  • A much smaller user base than Tampermonkey or Violentmonkey, which means fewer people have hit the bug you are about to hit.
  • No Chrome, Edge or Safari build, so it cannot be the answer for anyone working across browsers.
  • Combining scripts and styles in one extension also combines the blast radius: one extension with permission to inject both into every page.

Nimbus Screenshot

  • Nimbus Web has rebranded to FuseBase; nimbusweb.me now redirects to thefusebase.com, and the screenshot tool sits inside a broader client portal and AI workspace product
  • No Nimbus-branded pricing, plan or storage limit remains published at the original domain
  • The destination product is positioned around client portals, AI agents and project management rather than a standalone screenshot extension

Pricing, plan by plan

FireMonkey

Free
  • Open sourceFree
    • MPL-2.0 licensed
    • Unlimited scripts and styles
    • No account required

Nimbus Screenshot

Free
  • FreeFree
    • Screenshot capture
    • Basic annotation
    • Cloud storage

Which should you pick?

Choose FireMonkey if

  • You need scripts and styles together.
  • You want to start without paying.
  • You work on Firefox.
  • You also want monaco editor with eslint.
FireMonkey review

Choose Nimbus Screenshot if

  • You need full page capture.
  • You want to start without paying.
  • You work on Chrome, Firefox, Edge, Opera.
  • You also want area selection.
Nimbus Screenshot review

Questions people ask

Is FireMonkey or Nimbus Screenshot better?
Neither clearly leads. FireMonkey starts at Free and Nimbus Screenshot at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, FireMonkey or Nimbus Screenshot?
FireMonkey starts at Free and Nimbus Screenshot at Free.
Does FireMonkey or Nimbus Screenshot run on more platforms?
FireMonkey runs on Firefox. Nimbus Screenshot runs on Chrome, Firefox, Edge, Opera.
Can I use FireMonkey for free?
Both have a free tier, so you can try either at no cost before committing.
What is FireMonkey best used for?
FireMonkey is most often used for running user scripts and user styles without two separate extensions, restyling sites with css alongside scripted behaviour changes, editing scripts in a full editor inside the browser, injecting css globally across every site. Of those, running user scripts and user styles without two separate extensions and restyling sites with css alongside scripted behaviour changes are not what Nimbus Screenshot is typically brought in for.
What can FireMonkey do that Nimbus Screenshot cannot?
FireMonkey covers Scripts and styles together, Monaco editor with ESLint, Unlimited client-side storage, Global injection. Nimbus Screenshot covers Full page capture, Area selection, Annotation tools, Video recording.

Answered from the vendors’ own pages

FireMonkey: What makes FireMonkey different from Violentmonkey?

It manages user styles as well as user scripts. The usual arrangement is a script manager plus a separate style manager such as Stylus; FireMonkey replaces both with one extension.

Source
Nimbus Screenshot: What is the pricing for FuseBase's Solo plan?

The Solo plan is free to start, includes a 14-day trial, and provides 1,000 AI requests, 1 portal, 1 client, 1,000 automation runs, and 5 hours of transcriptions per month.

Source
FireMonkey: Which browsers does FireMonkey support?

Firefox only. Desktop requires Firefox 93 or later and Android requires 113, with an API minimum of 102.

Source
Nimbus Screenshot: What tiers does FuseBase offer?

FuseBase offers Solo (free), Essentials, Advanced (most popular), and Unlimited (custom pricing) plans. All paid plans include a 14-day free trial.

Source
FireMonkey: Is FireMonkey open source?

Yes, under the MPL-2.0 licence.

Source
Nimbus Screenshot: What do I get with FuseBase's Advanced plan?

The Advanced plan includes 50,000 AI requests, 100 portals (or unlimited with contact), 1,000 clients, 50,000 automation runs, 300 hours of transcriptions, granular permissions, and white-label capability. Exact pricing requires checking or contacting for current rates.

Source
FireMonkey: Will my existing Tampermonkey scripts work?

Not necessarily. The project states that while it shares functionality with Greasemonkey, Tampermonkey and Stylus, there are differences, so scripts and styles written for those may need adjusting.

Source
Nimbus Screenshot: Can I pay annually for FuseBase and get a discount?

Yes. FuseBase offers annual billing options with discounts compared to monthly payments. Upgrades charge immediately while downgrades apply at the end of your billing cycle.

Source
FireMonkey: What editor does FireMonkey use?

Current versions use the Monaco editor with ESLint, the same editor component that powers VS Code.

Source
Nimbus Screenshot: What add-ons are available for FuseBase?

FuseBase offers paid add-ons including extra automation runs (1,000/month), additional client portals, transcription hours (20/month), and per-user FuseBase AI costs.

Source
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