Voluntary contributions made from companies to individual maintainers, contributors, or OSS projects. Often these are one-time sponsorings, but recurring payments in form of quasi-salaries are becoming more common.
Requires:
Variants & Options:
| Characteristics | Value | Note | 
|---|---|---|
| Effort to set-up | Days | Companies might need more documentation than for donations | 
| Effort to maintain | Medium | Companies are more likely to inject new money | 
| Cost to set-up | None | |
| Cost to maintain | None | |
| One-time Income | Medium | Few sponsors will pay more than a yearly salary (due to fund size and high competition (too many projects to feed)) | 
| Recurring Income | Medium | Few sponsors will pay recurring salary-like sponsorings (probably capped with yearly fund) | 
| Income Predictability | Medium | Monthly to yearly reminders to sponsor necessary; Sponsors are more loyal but if one big sponsor goes it causes higher instability | 
| Full income Threshold | 10+ | |
| Recipient | C | |
| Additional Work | Low | Might require documentation, PR work, etc. | 
| Visibility | Low | Better for essential but underfunded OSS with problems | 
| Necessity to pay | Low | Completely voluntary; Better for essential OSS | 
| Entry Threshold | Medium | Requires charitable entity or company-level consideration of taxes, etc. | 
| Countervalue | Work | Can range from unrestricted use of money to development of specific features | 
| Scalability | Low | Scales with the number of companies (but probably capped at salary level) | 
| Effort for marketing | Medium | Companies often seek out OSS on their own (essential to their products) | 
| Competitors | None | |
| Software types | All |