This is very nice tool to log your travels around the galaxy. You can insert System and Jump notes. Everything is handled automatically from Elite journal.
Genar_Hofoen made a Frontier Forums Captain's Log 2 Beta Announcement at the day of Elite v2.2 launch. Check out Official Captain's Log Homepage.
Uses SQLite3 database to store your travels and notes. Has very nice graphicals percentage circle presentation of scanned planet materials and it also shows icons for J1, J2 and J3 which are Elite explorers slang term for "Jumponium" on basic, standard and premium boost levels.