ele (enCore Learning Environment) is a moo- and web-based environment (server, db, GUI) designed for educational purposes. It aids and promotes online learning and community building through open standards and ease of use. http://encore-consortium.org/
ArkWorld is a multi-player, free-form roleplay game system. The server uses XML for it's configuration and game description, and is written in C and C++ for Linux (and other un*x?). The clients are currently being written in GAMBAS and Visual Basic.
DeltaMUD is a multi-user dungeon (MUD) gaming server based on CircleMUD which has been enhanced with many programming additions and SQL support. The software now includes many memory and stability enhancements, as well as many additional gameplay options
Auth0 Token Vault handles secure token storage, exchange, and refresh for external providers so you don't have to build it yourself.
Rolling your own OAuth token storage can be a security liability. Token Vault securely stores access and refresh tokens from federated providers and handles exchange and renewal automatically. Connected accounts, refresh exchange, and privileged worker flows included.