comparethree librarieschecked 2026-09-01
We left the losses in.
Every comparison page on the internet is written by one of the two products. So here is ours, with the same rule applied to all three: every number is read from npm or the other project’s own site or repository, every page opens with the cases where you should install theirs instead, and kloq is version 0.1.0 in public on each of them.
If a number here has moved since 2026-09-01, the table is wrong. The sources are linked at the foot of every page so you can catch us at it.
01the three
The libraries you are actually choosing between.
Picked because these are the ones a developer shortlists against an open-source React calendar — not because they are the easiest to beat.
kloq vs FullCalendar
FullCalendar is the safer choice for most teams. kloq is the better one if the calendar is the product.
1 we win3 we lose1639k/wk
Read itreact-big-calendar v1.20.0kloq vs react-big-calendar
react-big-calendar is free, complete and everywhere. kloq is the answer when its interactions stop feeling good enough.
4 we win2 we lose1203k/wk
Read it@schedule-x/calendar v4.7.0kloq vs Schedule-X
Schedule-X keeps dragging in premium plugins. In kloq every interaction ships in the npm package.
6 we win1 we lose174k/wk
Read it02or just try it
The fastest comparison is your own pointer.
Every calendar on this site is the real component. Drag something; press ⌥D. It takes less time than reading a table.