I released CatChan script which equipped a virtual board function.
It still needs to be improved. However, you can try to taste it from BETA.
https://raw.github.com/Dogman8/CatChan/develop/CatChan.user.js
Easiest way to use:
1. Click 'settings'.
2. Click 'load default', '(I want to … now)' and any of '(…for 8chan)'. RECOMMEND TO USE SMALLEST SET UP FOR TRY IT NOW.
3. Reload.
4. After 20 secs delay, it starts to scan site, generates virtual boards and show them. If you choose entire site, it takes about 30 mins. So I recommend you to use smallest setup for 50 boards, this takes about 5-10 mins.
5. Click #XXX to on/off virtual boards. They are toggle buttons, so you can select multiple boards.
6. After 5 mins delay, auto updater will run and color tags if they have new posts. Favicon is also changed, and popup shows number of unread replies to you, unread replies, threads which have unread replies, threads in the virtual board, boards to which these threads belong respectively.
How it works:
You can add tags to a thread when you post #XXXX in your comment. CatChan scans all posts in all thread in all boards, aggregate, and shows it in catalog. Tags are bumped and discarded in usual manner. Details are configurable.
Virtue of virtual board:
You can choose which thread belong to which board. And also threads can belong to multiple boards. You can make virtual boards at any time. This gives extreme flexibility to threads. Threads can move between boards at any time virtually.
Virtual boards function is a super-set of 'physical boards', which is used now. If you limit max num of tags to 1; threads can only inherit a tag which has the same name of physical board. In this limitation, virtual board system is equivalent to physical board system. Virtual board system is a search engine by user tags simply.
Note:
Other information are available in below, but they are obsolete.
https://8ch.net/scriptcdc/res/59.html
https://8ch.net/scriptcdc/res/61.html
https://8ch.net/scriptcdc/res/63.html
https://8ch.net/scriptcdc/res/58.html
Status:
Now the script needs to be improved, but you can try it. I'll release more stable version in this weekend, but still it needs to be brushed up. I had already debugged it and I know the problem, but it'll take months to improve.
Feedback or bug reports are welcome. You can post it in lainchan if you want.
https://lainchan.org/%CE%BB/res/10247.html
Compatibility:
It works well in lainchan and 4chan.
It works but too slow in 8chan.
I haven't debugged in Krautchan.
Tags for example:
#CatChan, #virtualBoard