A simple mod that can allow you go up and down ladders much faster.
Look straight down to go down the ladder faster. Look straight up to go up the ladder faster. The degree to which you look up or down will affect how fast or slow you move. Mod config allows for increasing / decreasing how much faster you can go.
This mod is open source, and may be used in any modpacks. View the source code on github.
This mod will work as a client-side-only mod on multi-player servers, but be cautious when doing this, as many servers might ban users as this could be considered cheating.