Softwr

Browser Extensions · head to head

FireMonkey vs Neovim

FireMonkey logo

FireMonkey

Browser Extensions

User scripts and user styles in one Firefox extension

From
Free
Rated
-
Full reviewWebsite
Neovim logo

Neovim

Technology

hyperextensible Vim-based text editor

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.; Neovim no official first-party GUI is shipped; Neovim itself is a terminal-based editor and only maintains a curated list of third-party GUI front-ends
  • They diverge on capability: FireMonkey covers Scripts and styles together, Neovim covers Async job control.
  • Prices and features above were last checked on 15 September 2026.

Where they differ

Only the attributes on which FireMonkey and Neovim actually diverge.

Attributes where FireMonkey and Neovim differ
AttributeFireMonkeyNeovim
Pricing modelopen-sourceUnknown
PlatformsFirefoxWindows, macOS, Linux
CategoryBrowser ExtensionsTechnology
FoundedUnknown2014

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

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 Neovim

  • Async job control
  • Lua scripting
  • Built-in LSP client
  • Tree-sitter syntax highlighting
  • Extensible UI
  • Terminal emulator
  • Modern plugin architecture
  • Better defaults

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 Neovim
  • Restyling sites with CSS alongside scripted behaviour changesnot Neovim
  • Editing scripts in a full editor inside the browsernot Neovim
  • Injecting CSS globally across every sitenot Neovim
  • Managing a mixed library of scripts and styles from one dashboardnot Neovim

Neovim

  • General source-code editingnot FireMonkey
  • Terminal-based development workflows, including over SSH on remote serversnot FireMonkey
  • Building custom IDE-like environments via LSP and Lua pluginsnot FireMonkey
  • Embedding as an editor component in other GUI/IDE front-ends via --embednot FireMonkey
  • Vim-compatible scripting and automation of text editingnot 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.

Neovim

  • No official first-party GUI is shipped; Neovim itself is a terminal-based editor and only maintains a curated list of third-party GUI front-ends
  • Licensing is not uniform: code contributed after commit b17d96 is Apache 2.0, but code carried over from Vim (tagged vim-patch) remains under Vim's own license
  • Built-in LSP client and Tree-sitter integration are frameworks requiring separate configuration or plugins for language servers/grammars to be useful, not out-of-box language support
  • No official iOS, Android, or web build

Pricing, plan by plan

FireMonkey

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

Neovim

Free

No published plan breakdown. See the Neovim review.

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 Neovim if

  • You need async job control.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want lua scripting.
Neovim review

Questions people ask

Is FireMonkey or Neovim better?
Neither clearly leads. FireMonkey starts at Free and Neovim at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, FireMonkey or Neovim?
FireMonkey starts at Free and Neovim at Free.
Does FireMonkey or Neovim run on more platforms?
FireMonkey runs on Firefox. Neovim runs on Windows, macOS, Linux.
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 Neovim is typically brought in for.
What can FireMonkey do that Neovim cannot?
FireMonkey covers Scripts and styles together, Monaco editor with ESLint, Unlimited client-side storage, Global injection. Neovim covers Async job control, Lua scripting, Built-in LSP client, Tree-sitter syntax highlighting.

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
Neovim: How much does Neovim cost?

Neovim is free and open-source software. No cost is associated with downloading, using, or distributing Neovim. The project is community-driven with optional sponsorship opportunities for those who wish to support its development.

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
Neovim: Is Neovim open source?

Yes, Neovim is free, open-source software available to everyone at no cost. Users can download, modify, and distribute it freely for any purpose.

Source
FireMonkey: Is FireMonkey open source?

Yes, under the MPL-2.0 licence.

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
FireMonkey: What editor does FireMonkey use?

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

Source
Share

Related pages

More on FireMonkey

More on Neovim

Keep looking

Other head to heads