Google Analytics: Looks like: _utma, _utmb, _utmc, _utmz

Google Analytics cookies track when you accessed the site, how long you spent here, what you did, how you got here, and when you left.
_utma tracks how many times (if any) you have visited the website before. Expires 2 years after your last visit to this site.

_utmb and _utmc are connected, and track how long you stay on the site. _utmb: Expires 30 minutes after your visit, or after 30 minutes of inactivity. _utmc: Expires when you close your browser.

_utmz tracks identifies where you've come from e.g. from a search engine or from another website. _utmz: Expires 6 months after it was last set.

You can read more about what each Google Analytics cookie does.

ctxchange.org: Looks like: ccShowCookieIcon site_cookiecontrol

Used by this popup/site to record whether you have chosen to accept cookies. Duration 180 days.