repl.it : Powerful and simple online compiler, IDE, interpreter, and REPL. Code, compile, and run code in 30+ programming languages. including JavaScript, Pytho...
migra.djrobstep.com : migra is a schema comparison tool for PostgreSQL.
It's a command line tool, and Python library. Find differences in database schemas as easily as runn...
Alembic : Alembic is a new database migrations tool, written by the author of SQLAlchemy.
Maqetta : Maqetta is an open source project that provides WYSIWYG visual authoring of HTML5 user interfaces. The Maqetta application itself is authored in HTML,...