The below are in order of launch date. Arguably, Friendsurance is the first tech p2p insurer as the history of small mutuals goes a long time back in history (e.g. the start of USAA, Lloyds etc) If you hover over the icon you will get the organisation name and launch year, click and it will take you through to the site.
If you are interested in the p2p insurers who are yet to launch, there are more details here.