So I want to uninstall pidgin. I first ran sudo apt remove pidgin. This worked and something was removed. I then ran apt-cache search pidgin and I got a lot of plugins that were not removed:
pidgin - graphical multi-protocol instant messaging client for X
pidgin-audacious - pidgin integration with Audacious
pidgin-awayonlock - pidgin plugin to set as away on screensaver activation
pidgin-blinklight - Blinks your ThinkPad's ThinkLight upon new messages
pidgin-bot-sentry - pidgin anti spam plugin
pidgin-data - multi-protocol instant messaging client - data files
pidgin-dbg - Debugging symbols for Pidgin
pidgin-dev - multi-protocol instant messaging client - development files
pidgin-encryption - pidgin plugin that provides transparent encryption
pidgin-extprefs - extended preferences plugin for the instant messenger pidgin
pidgin-festival - pidgin plugin to hear incoming messages using voice synthesis
pidgin-gmchess - pidgin integration with gmchess
pidgin-gnome-keyring - integrates pidgin (and libpurple) with the system keyring
pidgin-gnome-keyring-dbg - debugging symbols for pidgin-gnome-keyring
pidgin-guifications - toaster popups for pidgin
pidgin-hotkeys - Configurable global hotkeys for pidgin
pidgin-lastfm - Last.fm plugin for Pidgin
pidgin-latex - Pidgin plugin to display LaTeX formulas
pidgin-libnotify - display notification bubbles in pidgin
pidgin-librvp - MS Exchange RVP instant messaging plugin for Pidgin
pidgin-microblog - Microblogging plugins for Pidgin
pidgin-microblog-dbg - Microblogging plugins for Pidgin (debugging symbols)
pidgin-mpris - sets your available message to your currently playing track
pidgin-mra - Mail.ru Agent protocol plugin for Pidgin IM
pidgin-mra-dbg - Mail.ru Agent protocol plugin for Pidgin IM
pidgin-nateon - Pidgin plugin for NateOn instant messaging service
pidgin-nateon-dbg - debugging symbols of pidgin-nateon
pidgin-openfetion - Fetion protocol plugin for libpurple
pidgin-openpgp - OpenPGP plugin for Pidgin
pidgin-otr - Off-the-Record Messaging plugin for Pidgin
pidgin-plugin-pack - Collection of Pidgin plugins
pidgin-privacy-please - plugin for enhanced privacy in pidgin
pidgin-sipe - Pidgin plugin for MS Office Communicator and MS Lync
There are more of them actually.
How do I remove all of these at once?
Also, I remember there being a package manger in Ubuntu which could be used instead of dpkg and apt (It let you install things and you could easily keep track of them). I forgot the name. If someone knows of such software, please comment it.(It's not synaptic and it had its own Ubuntu page explaining how to use it).