The following description is found on the website:
dwb is a lightweight web browser based on the webkit web browser engine and the gtk toolkit. dwb is highly customizable and can be easily configured through a web interface. It intends to be mostly keyboard driven, inspired by firefox's vimperator plugin.
What makes this browser appealing is the fast page rendering. While you are in command mode you type 'open url' to open a web page. If you want to open a page in a new tab then you would type 'Open URL'. Also to goto the settings page you enter the following 'Ss'. A complete list of the command options can be found on man page or you can see them here. Some drawbacks I found are moving through tabs and using extensions. There are times when moving between tabs would just not work unless I used my mouse. This at times got pretty annoying after a while. Also I wanted to use the adblocker extension, but I could never get that to work. It could be that debian stable did not seem to have all the features in its distro. It could be that on an distro like Arch you get a better experience. Here are some screenshots.
The following is from the Luakit site:
"Luakit is a highly configurable, browser framework based on the WebKit web content engine and the GTK+ toolkit. It is very fast, extensible by Lua and licensed under the GNU GPLv3 license. It is primarily targeted at power users, developers and any people with too much time on their hands who want to have fine-grained control over their web browsers behaviour and interface."
This browsers is so customizable! Want adblocking no problem. Want watch videos with mplayer or mpv instead of the browser no problem. All they configuration is done in the Lua language on configuaration files. There is a great YouTube video explaining what you can do with luakit. If you want lightwight, fast, and a customizable browers then give luakit a try!