I wrote Lua Toolbox in Lapis mostly to experiment with it. I think the framework has a lot of potential but I have two main issues with it:
1) It is written in Moonscript, which makes understanding its internals harder for Lua programmers. On the application side, Lua support used to be a second thought but now I think you can do almost everything without writing a single line of Moonscript.
2) It is tied to OpenResty. This is both a good and a bad thing, because it means you cannot use several of the existing libraries in the Lua ecosystem.
If you are looking for alternatives, a new framework called Sailor was presented at Lua Workshop 2014 (slides: http://www.lua.org/wshop14/Dalcol.pdf)
1) It is written in Moonscript, which makes understanding its internals harder for Lua programmers. On the application side, Lua support used to be a second thought but now I think you can do almost everything without writing a single line of Moonscript.
2) It is tied to OpenResty. This is both a good and a bad thing, because it means you cannot use several of the existing libraries in the Lua ecosystem.
If you are looking for alternatives, a new framework called Sailor was presented at Lua Workshop 2014 (slides: http://www.lua.org/wshop14/Dalcol.pdf)