Piperka is a web comic tracking and bookmarking service with over 5000 comics listed on it. It doesn't host any web comics by itself but maintains a list of them and an index of their archive pages.
Piperka Client uses Piperka's database to offer browsing and navigation for web comics' archives in a unified manner. It stores users bookmarks and periodically contacts the server to check on any updates to the comics that users read.
Image of comic in screenshot is from Pepper & Carrot by David Revoy, www.davidrevoy.com.
Piperka Client is licensed under GNU GPL version 2 or later. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.