All sites listed here are reputable and verified to pay. Click the (?) for more information about each category, or you can click on (My review) to read about my personal experience with the sites. If there is a site you know of that I don't have listed, please let me know in the comments. Thank you!

Task based sites
Remotasks
Data Annotation

Academic Surveys
Prolific
Cloud Research (My review)
MTurk (My review)

Focus Groups
UserTesting (My review)
Dscout (My review)

Market Surveys
MyPoints (My review)
Swagbucks(My review)
Qmee
Survey Junkie
AttaPoll

Games
MistPlay

Submitting Receipts
Fetch
Ibotta