Colonist.io - Free online alternative to the popular board game Settlers of Catan. Play single or multiplayer, with expansions, custom maps, and more. No download or sign up required!

Agricola - Agricola is a Board, Strategy, Card, Deck-Building, Single-player, and Multiplayer game in which you have to start playing the tactical adventure game over the tabletop, make strategies, and get victories against your friends.

Ka-tan - A shared board to play Catan? on with friends

Terraforming Mars - Terraforming Mars is a Board, Strategy, Single-player and Multiplayer video game with an emphasis on Space, Online PVP, and Tabletop elements.

Catan HD - Catan, the legendary strategy game provides gaming fun anytime, anywhere.

JSettlers - JSettlers2 is a web-based version of the board game Settlers of Catan written in Java.