Whenever I get a new computer I install these right away.

Used everyday:

• Alfred: customizable productivity tool. It's a launcher, file searcher, web searcher, clipboard manager, snippet manager, script runner, etc with a robust community making scripts.

• Textpander: a text replacer I've been using before Apple's and Alfred's solutions.

• Bettertouchtool: customize keyboard and trackpad shortcuts

• Notational Velocity/nVALT + Obsidian: note taking synced across my devices. NValt for quick notes while Obsidian is for long form and personal knowledge management. Just plain text files in a communal vault somewhere.

• Dropbox: mainly used to sync settings for apps and notes across devices.

• 1Password: password generation and management for me and my girlfriend. A little pricey, but I love it. been researching alternatives.

Also handy:

• Better Rename 9: rename files. Replace characters or strings, add in number sequencing, convert casing, etc. I have a lot of photos and work with a lot of images so this comes in handy

• Copyqueue: file copy. Enables a queue for file copy.

• Hidden Bar: menu bar management

For my watch:

• App in the Air: is a nice airport companion that visually shows the airplane phases (boarding, flight duration) with accompanying info (like gates and delays)