Super User
Q&A for computer enthusiasts and power users
Stack Overflow
Q&A for professional and enthusiast programmers
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
Server Fault
Q&A for system and network administrators
Bitcoin
Q&A for Bitcoin users, developers, and enthusiasts
Ask Different
Q&A for power users of Apple hardware and software
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Ethereum
Q&A for users of Ethereum, the decentralized application platform and smart contract enabled blockchain
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Movies & TV
Q&A for movie and TV enthusiasts
Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Cryptography
Q&A for software developers, mathematicians and others interested in cryptography
Software Recommendations
Q&A for people seeking specific software recommendations