Review for SQLite Manager by KiberПсих
Rated 5 out of 5 stars
After firefox 57, you can use version of this extension with XULRunner (http://releases.mozilla.org/pub/xulrunner/releases/)
github.com/lazierthanthou/sqlite-manager/releases
download version with postfix *-xr-*
unpack, change maxVersion in application.ini to version of you XULRunner
and run as
xulrunner -app "path/to/unpacked/sqlitemanager/application.ini"
To create your own collections, you must have a Mozilla Add-ons account.