[gunn]

I use and can recommend the chrome extension from https://sessionbuddy.com/

Even if you don't use it actively, it periodically saves the state of your windows and tabs (all locally), so you can restore sessions from months and years ago.

[O_H_E]

SessionBuddy is amazing. It is the only thing I am missing from chrome.

Although it is not open-source, it has customizable exports in a variety of text formats . Too tired to write more, but if you use chrome check it out.

[kerrybright3000]

Session Buddy is great though I moved to Bookmark OS as it was easier to share sessions between browsers https://bookmarkos.com