SQLite

https://en.wikipedia.org/wiki/SQLite
https://sqlite.org/

Working with a SQLite DB

See:
Command Line Shell For SQLite
https://sqlite.org/cli.html
Or see sqlitebrowser below.

Utilities and libraries

Gentoo packages:
* dev-db/sqlite
Homepage: https://sqlite.org/
Description: A SQL Database Engine in a C Library

* app-backup/holland-backup-sqlite
Homepage: http://www.hollandbackup.org/
Description: Holland sqlite Plugin

* dev-db/sqlitebrowser
Homepage: http://sqlitebrowser.org
Description: SQLite Database Browser

* dev-db/sqliteman
Homepage: https://sourceforge.net/projects/sqliteman/
Description: Powerful GUI manager for the Sqlite3 database

* dev-db/sqliteodbc
Homepage: http://www.ch-werner.de/sqliteodbc/
Description: ODBC driver to access local SQLite database files

* dev-db/sqlitestudio
Homepage: https://sqlitestudio.pl
Description: Powerful cross-platform SQLite database manager

* dev-db/vsqlite++
Homepage: http://evilissimo.fedorapeople.org/releases/vsqlite--/
Description: VSQLite++ - A welldesigned and portable SQLite3 Wrapper for C++

* dev-db/wxsqlite3
Homepage: http://wxcode.sourceforge.net/components/wxsqlite3/
Description: C++ wrapper around the public domain SQLite 3.x database

* dev-erlang/sqlite3
Homepage: https://github.com/processone/erlang-sqlite3
Description: SQLite gen_server port for Erlang

* dev-go/go-sqlite3
Homepage: https://github.com/mattn/go-sqlite3
Description: Go sqlite3 driver using database/sql

* dev-haskell/hdbc-sqlite3
Homepage: https://github.com/hdbc/hdbc-sqlite3
Description: Sqlite v3 driver for HDBC

* dev-haskell/hsql-sqlite3
Homepage: http://hackage.haskell.org/package/hsql-sqlite3
Description: SQLite3 driver for HSQL

* dev-haskell/persistent-sqlite
Homepage: http://www.yesodweb.com/book/persistent
Description: Backend for the persistent library using sqlite3

* dev-ml/ocaml-sqlite3
Homepage: http://mmottl.github.io/sqlite3-ocaml/
Description: A package for ocaml that provides access to SQLite databases

* dev-perl/DBD-SQLite
Homepage: http://search.cpan.org/dist/DBD-SQLite/
Description: Self Contained RDBMS in a DBI Driver

* dev-perl/DateTime-Format-SQLite
Homepage: http://search.cpan.org/dist/DateTime-Format-SQLite/
Description: Parse and format SQLite dates and times

* dev-python/sqlite3dbm
Homepage: https://github.com/Yelp/sqlite3dbm https://pypi.python.org/pypi/sqlite3dbm/
Description: An sqlite-backed dictionary

* dev-python/sqlitecachec
Homepage: http://yum.baseurl.org/
Description: sqlite cacher for python applications

* dev-ruby/sqlite3
Homepage: https://github.com/sparklemotion/sqlite3-ruby
Description: An extension library to access a SQLite database from Ruby

Other

litecli
A command-line client for SQLite databases that has auto-completion and syntax highlighting.
https://github.com/dbcli/litecli
https://www.dbcli.com/

xo/usql
universal command-line interface for SQL databases
https://github.com/xo/usql