Ogrim is influenced by ALTCHA. Taking a quick glance, Anubis is a similar solution with some differences of solving the same problem:

• Anubis sits between the target service and the reverse proxy, while Ogrim sits behind the target service.
• One Anubis instance is needed per service, while a single Ogrim instance can be used for multiple services.
• The target service does not need integration with Anubis. On the other hand, Ogrim and its services must be integrated to work.
• Anubis will block search engine indexers, affecting the SEO of the target service. This is not the case with Ogrim.

I'm currently working on a minimal spam protection system that uses a proof-of-work mechanism.

Transmission's minimal features is what I like about it.

I recommend the 8bitDo Pro 2 controller. The controller works well on my Linux gaming machine and the things I like about it are:

• Bluetooth or wired connection
• Replaceable battery with up to 20 hours of playtime.