I wrote this little NSE script that allows you to store the output of Nmap into a SQLite database: https://github.com/exitnode/nmap-sqlite-output
This might come in handy when performing large inventory scans. The SQLite database can be queried and sorted easily or exported as a CSV file. This way you can, for example, easily generate tables for your assessment report.
$ nmap -sS -A -F --script sqlite-output scanme.nmap.org [...] $ sqlite3 scan.sqlite [...] sqlite> select * from scandata; scanme.nmap.org|184.108.40.206|22|tcp|ssh|open|OpenSSH5.3p1 Debian 3ubuntu7.1 scanme.nmap.org|220.127.116.11|80|tcp|http|open|Apache httpd2.2.14