The best referral programs of 2023 vary depending on the industry and target audience. However, some popular referral programs include: Dropbox: Dropbox offers 500 MB to 1 GB of free storage space for each referral. Hostinger: Hostinger offers a 20% commission on all referrals. Fiverr: Fiverr offers a 10% commission on the referral's first order. Swagbucks: Swagbucks offers a 10% commission on the referral's earnings. SoFi: SoFi offers $20 in reward points per referral. Google Workspace: Google Workspace offers $8 to $23 per user referral.