Bluefish I think one of the best free web editor available for Linux. It has lots of features.
From Ubuntu Terminal screen (Applications > Accessories > Terminal), type:
taufanlubis@toshiba:~$ sudo apt-get install bluefish
[sudo] password for taufanlubis:
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following packages were automatically installed and are no longer required:
egoboo-data conquest-libs overgod-data
Use ‘apt-get autoremove’ to remove them.
gnome-bin weblint-perl weblint php4-cli php5-cli tidy
The following NEW packages will be installed:
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 1622kB of archives.
After unpacking 6918kB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
Install these packages without verification [y/N]? y
Get:1 http://archive.ubuntu.com gutsy/universe bluefish 1.0.7-2 [1622kB]
Fetched 1622kB in 32s (49.3kB/s)
Selecting previously deselected package bluefish.
(Reading database … 134105 files and directories currently installed.)
Unpacking bluefish (from …/bluefish_1.0.7-2_i386.deb) …
Setting up bluefish (1.0.7-2) …
How to run?
Open Applications > Programming > Bluefish Editor.
Manual available at: