BeardedSpice: With this menubar app, I can use built-in media keys to control a bunch of native and web media players. The list of supported sites is long, be sure to check it out.
Bumpr: If you use different web browsers for whatever reasons, this app is a must. Every time you click on a link, you’ll be asked which browser to use for that one. The only downside is that you lose the ability to open links in the background. I tried to contact the authors to request this feature, but haven’t heard back from them.
ControlPlane: IFTTT-like app to invoke certain actions based on different ‘evidences’ such as current location, visible Wi-Fi networks, attached USB devices, etc. Sadly the app was discontinued back in 2017.
Deckset: Turns Markdown files into good-looking presentations.
Knotes: A simple viewer for Kindle’s My Clippings.txt. It does exactly what it says and doesn’t depend on any third party services.
Micro Snitch: From the same developers who made LaunchBar and Little Snitch, this menubar app lets me know whenever an app uses your microphone or webcam. Got it the day I watched Shut Up and Dance (lol).
Qbserve: An automatic time tracker like RescueTime, but it runs locally and doesn’t require a subscription.
TinkerTool: Helps me easily tweak macOS’ hidden preference settings without touching Terminal commands.
ToothFairy: This little menubar app does one thing and does it well: Helps connect Bluetooth headphones to my laptop with one click.
Turbo Boost Switcher Pro: Great companion for machines with Turbo Boost feature. I learned about this from Marco Arment’s blog post and installed the app right away. Set it to “Disable Turbo Boost feature when: Battery not charging” and I’ve never had to worry about my MacBook Pro fans blasting all the time since.