AKA: Donationware
Voluntary contributions made from private persons to individual maintainers, contributors, or OSS projects. Often these are one-time donations, but recurring payments are also becoming more common.
Requires:
Variants & Options:
| Characteristics | Value | Note | 
|---|---|---|
| Effort to set-up | Hours | Some descriptions and bank info is sufficient | 
| Effort to maintain | High | Constant reminders to donate necessary | 
| Cost to set-up | None | |
| Cost to maintain | None | |
| One-time Income | Low | Few private sponsors will pay more than a few dollars (due to own finances and high competition (too many projects to feed)) | 
| Recurring Income | Low | Very few sponsors will pay recurringly | 
| Income Predictability | Low | Constant reminders to donate necessary; Sponsors can come and go on a whim | 
| Full income Threshold | 1000+ | |
| Recipient | I + C | |
| Additional Work | None | |
| Visibility | Low | Easy to forget, ignore, or overlook by users | 
| Necessity to pay | Low | Completely voluntary | 
| Entry Threshold | Low | Credit card is sufficient | 
| Countervalue | None | |
| Scalability | Medium | Scales with the number of users (who want to donate) | 
| Effort for marketing | High | |
| Competitors | None | |
| Software types | All |