Sites built with fecha
Lightweight JavaScript library for formatting and parsing dates.
Get told when a new site ships with fecha.
Stackdar watches every launch we detect and sends you the ones using fecha, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workFound via: StackScope Discovery (Indie) 7 · StackScope Wider Web 34
fecha has been detected on 41 launches we've crawled. The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection: FotoRevive — Recupera esa foto que el tiempo dañó, today.
It's most commonly paired with jQuery, Cloudflare, and HTTP/3.
Domain endings using fecha
41 sites
- .com 58.54%
- .online 7.32%
- .org 7.32%
- .sk 7.32%
- .in 4.88%
- .ai 2.44%
- .app 2.44%
- .br 2.44%
- .es 2.44%
- .mx 2.44%
- .uk 2.44%
Share of new sites using fecha
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
The shaded part of the chart is measured against a different set of sites. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.
How StackScope detects technologies
⋮ Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery.
Javascript Library leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
jQuery
|
14.34% | 34.34% |
| #2 | – |
React Router
|
6.77% | 16.20% |
| #3 | – |
Motion
|
6.66% | 15.94% |
| #4 | – |
TanStack Router
|
4.24% | 10.16% |
| #5 | – |
Swiper
|
3.63% | 8.69% |
| … | ||||
| #374 | ▲20 |
fecha
Current page
|
<0.01% | <0.01% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Javascript Library tool.Among August launches it ranked #370 in Javascript Library, up from #390 in July. All 1104 in Javascript Library →
Often used with
| Tool | Sites |
|---|---|
|
jQuery
|
26 |
Cloudflare
|
22 |
| HTTP/3 | 22 |
Hotel Datepicker
|
21 |
Cloudflare DNS
|
18 |
Tools most often detected on the same sites as fecha.
Recent launches we can show
7 of the 41 sites using fecha are product launches we list individually. The other 34 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works
Su Homenaje — Una canción original en memoria de quien amas
Social
PillaMas | Cupones, puntos y tarjetas de sellos para comercios
AlertaTerra — Emergencias Sudamérica
Health
NexDesk – Coworking Management Software | Bookings, Payments & Visitors
Productivity
greenfeemap — los campos de golf de España y sus precios
PillaMas | Cupones, tarjetas de fidelización y promociones para comercios
The StackScope API serves all 41 sites using fecha, filterable and exportable, from £15 a month.