1. Peakd -> The design and everything that it brings, now including Snaps is awesome
2. Ecency -> Nice mobile app, despite of peakd being possible to use in mobile, Ecency for me is the best for mobile.
3. Hivekeychan -> How do you enter a house without a keychain? hehe I use that a lot to dive into hive.
4. Hive-engine -> For trading second layer tokens and bridge to other networks
5. Friday -> that's a nice discord bot to notify us about our account including filling trades in hive-engine, tags and users that we follow

I could add more but for now top 5 right?