- SQLite: SQL database with no sugar. Less calories!
- MySQL: A selfish database.
- IMB DB2: Released in 1983, but never got promoted to DB3. Probably abandoned software?
- Postgresql: Gesundheit!
- CouchDB: A database for lazy people. Part of the NOSQL family, the Zen database family, that achieve SQL by not achieving SQL... like I said, lazy.
- Microsoft Access: It's very accessible. Ironically, most people that use Office don't know what it is, or that it exists, and thus, don't use it.
- dBase: De-bases your data.
- Sybase: Pronounced sigh base, which is the sound people make when you suggest it.
MySQL is named after the founder's daughter "My". The fork is named after his other daughter "Maria": https://en.wikipedia.org/wiki/Michael_Widenius#Personal_life
MySQL: a proprietary product if ever I saw one.
CouchDB: wow, does that hide bits of data until you search next week?