The Doomsday Engine is a portable version of the classic first person shooters DOOM, Heretic, and Hexen. It lets you enjoy the original games using modern technology, including high-resolution OpenGL graphics, 3D models, and dynamic lighting effects.Data files from the original games are not included; you must acquire a copy of the original games from id Software and/or Raven Software. You may also use free alternatives such as https://freedoom.github.io/.

Doomsday Engine

Enhanced source port of Doom, Heretic, and Hexen

Lagrange is a desktop GUI client for browsing Geminispace. It offers modern conveniences familiar from web browsers, such as smooth scrolling, inline image viewing, multiple tabs, visual themes, Unicode fonts, bookmarks, history, and page outlines.Like the Gemini protocol, Lagrange has been designed with minimalism in mind. It depends on a small number of essential libraries. It is written in C and uses SDL for hardware-accelerated graphics. OpenSSL is used for secure communications.

Apps by Jaakko Keränen

Doomsday Engine

Lagrange