Ask HN: What are your favorite tools?

A few apps that I enjoy using every day:

https://ia.net/writer for writing.

https://usecontrast.com/ for checking contrast.

https://sipapp.io/ for picking colors.

https://nova.app/ for editing code.

https://cleanshot.com/ for screenshots.

https://getpixelsnap.com/ for measuring elements on screen.

https://netnewswire.com/ for reading things via RSS.

https://panic.com/transmit/ for file transfers.

https://usefathom.com/ for web analytics.

https://balsamiq.com/ for wireframes.

https://tome.app/ for slides and presentations.

https://www.hey.com/ for email.

Amphetamine for keeping my Mac awake.

What else? What are some of your favorite tools?