Manseryeok on new websites
A JavaScript library for Korean Saju (Four Pillars) and perpetual-calendar calculations with true solar time correction.
Found via: StackScope Discovery (Indie) 2 · StackScope Wider Web 2
Manseryeok appeared on 1 new site in the last 30 days.
These figures cover websites that went live since April 2026, not the web as a whole.
Share of new sites using Manseryeok
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
The shaded area was measured against a different set of sites, so the line can step there without Manseryeok itself changing.
Coverage details
Amber: 8 July to 10 September 2026, before we improved our infrastructure to index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from 10 September. We record each site as it was when we found it.
The share is a proportion of whatever we were tracking at the time. For a single continuous measure, switch to launch platforms.
Javascript Library leaders
| Tool | % of sitesall time | % of categoryall time | ||
|---|---|---|---|---|
| #1 | – |
jQuery
|
14.2% | 34.5% |
| #2 | – |
React Router
|
6.7% | 16.2% |
| #3 | – |
Motion
|
6.0% | 14.6% |
| #4 | – |
TanStack Router
|
4.4% | 10.7% |
| #5 | – |
Swiper
|
3.4% | 8.3% |
| … | ||||
| #1324 | Manseryeok Current page | <0.1% | <0.1% | |
Percentages show all-time adoption across the new sites we track: the share of all of them, and of the sites using any Javascript Library tool. All 1542 in Javascript Library →
Recent launches using Manseryeok
2 of the 4 sites using Manseryeok are product launches we list individually. The other 2 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. They are included in the StackScope API and in Stackdar alerts. How StackScope Discovery works
The StackScope API serves all 4 sites using Manseryeok, filterable and exportable, from £15 a month.