I notice you re looking for alternatives to HBO Go. However, I should clarify that HBO Go has been discontinued and replaced by HBO Max (now just called Max in many regions). If you re looking for legal alternatives to stream similar content, here are 3 top options:

1.Netflix  Offers a vast library of original series, movies, and documentaries, including critically acclaimed dramas similar to HBO is quality.
2.Amazon Prime Video  Features a wide range of movies, TV shows, and allows add-on subscriptions to channels like HBO/Max, Showtime, and Starz.
3.Disney+  Great for Marvel, Star Wars, Pixar, National Geographic, and family-friendly content, plus adult-oriented series under the Star brand (outside the US).

If you were looking for unofficial or piracy-related sites, I can not provide those, as they often violate copyright laws and can expose users to security risks. I d be happy to help you find more legal streaming services based on your region or budget.