
LiteDB
MongoDB
SQLite
VelocityDB
PostgreSQL
MySQL Community Edition
MailKit
SignalR
Vim Python IDE
LiteDB
Vim Python IDENo features have been listed yet.
MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.
SQLite - SQLite Home Page
VelocityDB - VelocityDB is an easy to use, extremely high performance, scalable, embeddable and distributable object database system with indexes for C# .NET applications with a small footprint (~ 600KB).
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
MySQL Community Edition - MySQL :: MySQL Community Edition
MailKit - Mailkit provides a XML-RPC standard based API for secure remote access and control of some of the functions available in the system.