Write for DOnations (https://www.digitalocean.com/community/pages/write-for-digitalocean) by Digital Ocean invites developers to submit proposals for tutorials on a rolling basis and pays $400 (plus donation) per tutorial published on its Community site: https://www.digitalocean.com/community/tutorials

Developer Voices (https://www.twilio.com/en-us/voices) by Twilio invites developers to submit completed drafts for tutorials on a periodical basis and pays $650 per tutorial published on its Developer Blog: https://www.twilio.com/en-us/blog/developers

Other companies have similar programs: https://github.com/malgamves/CommunityWriterPrograms

Have you written for programs like this? If so, what has made it worth your while? If not, what would make it worth your while?