Byword
Used by 19 peoplebywordapp.com ↗

“I'm writing this in Byword, and I write a lot on paper.”
Erin Kissane Interview, Writer, editor (Source) · via Uses This 
“To cap things off, I do all of my writing using Byword.”
Robyn Kanner Interview, UX designer (Amazon), co-founder (MyTransHealth) · via Uses This 
“For long-form writing, I love Byword.”
Ramsey Nasser Interview, Computer scientist, game designer · via Uses This 
“Byword: When I am doing a long form article or writing something of substance, I often will write in Byword.”
Shawn Blanc Interview, Writer (shawnblanc.net) · via Uses This