soulhotel/FF-ULTIMA
The Firefox theme with too many options.. FF Ultima. observed · 2026-08-28
Health v2 · maintenance only
72/100
- Activity 86
- Release rhythm 59
- Longevity 64
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 18
- age_days: 899
- days_rel: 274
- days_push: 87
- n_releases_24m: 24
Adoption not part of the score
1225 stars · 44 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
FF Ultima is a highly configurable CSS theme for Firefox built on userChrome.css customization. It supports multiple layouts (tabs on top, vertical tabs, Sidebery, hidden tabs) and extensive optional settings for spacing, autohiding, colors, and accessibility across all operating systems.
Use cases
- customize firefox browser appearance with css
- get vertical tabs in firefox
- make firefox look minimal with hidden tabs
- apply a userchrome theme to firefox
- autohide firefox ui elements
- match firefox theme colors to extensions like sidebery
When to choose
- you want a heavily customizable Firefox theme with many toggleable options
- you use vertical tabs or Sidebery and want theme support
- you want cross-platform Firefox styling with accessibility options
When to avoid
- you use Chrome, Edge, or another non-Firefox browser
- you want a zero-configuration one-click theme without editing userChrome files
- you need a browser extension rather than a CSS theme
Facets
plugin · maturity active
theme ui-components css-framework web-development frontend developer-tools cross-platform windows browser cross-platform firefox userchrome browser-customization css-theme vertical-tabs linux macos
1 source
- readme: https://github.com/soulhotel/FF-ULTIMA · fetched 2026-08-28 · a74797bf8984
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| soulhotel/FF-ULTIMA | main | 72 |
For agents
markdown · JSON · MCP: product_card(name="soulhotel/FF-ULTIMA")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem