TripleA is the most popular client I'm familiar with. Quite active. They have a bunch of variants but you can play the standard default stuff too. Source: 12 months ago

It's 2-3 hours with computerized rules enforcement : https://triplea-game.org/. Source: about 1 year ago

There is also TripleA, which is open source and has a large variety of maps and rule variants. https://triplea-game.org/. Source: over 1 year ago

Side note: I really liked Axis and Allies, played it several times as a young adult with a few close friends. There is a nice open-source implementation of it, if you want to "play" instead of work. [0] However, it misses the social part. [0]: https://triplea-game.org/. - Source: Hacker News / over 1 year ago

My advice would be to try all the official versions on TripleA (https://triplea-game.org/) to get a feel for the version you like before you spend any money on a new game. Source: over 1 year ago

Firefox detected a potential security threat and did not continue to chesstempo.com because this website requires a secure connection. Source: 8 months ago

I enthusiastically recommend Chess Tempo (https://chesstempo.com/), which will give you interactive chess puzzles from real games that are tailored to your level. Someone else mentioned the similar system on lichess, which is also fine. - Source: Hacker News / 8 months ago

Does anybody know? There was a post from two years ago about this, and someone commented chesstempo.com, but I can't find the same board there. Source: 10 months ago

I use chess.com to play and I also have an chesstempo.com account which seems to be really good for practicing the openings. Source: 11 months ago

To get better at #2 pattern recognition, work on fast tactics. Go to chesstempo.com and train with blitz/easy tactics. Do this every day. After a time, I think you won’t need to do the Fritz training (maybe a month or two and you should be good), but do the tactics everyday. It’s your daily vitamin. Source: 11 months ago