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.
Variants & Options:
|Effort to set-up
|Companies might need more documentation than for donations
|Effort to maintain
|Companies are more likely to inject new money
|Cost to set-up
|Cost to maintain
|Few sponsors will pay more than a yearly salary (due to fund size and high competition (too many projects to feed))
|Few sponsors will pay recurring salary-like sponsorings (probably capped with yearly fund)
|Monthly to yearly reminders to sponsor necessary; Sponsors are more loyal but if one big sponsor goes it causes higher instability
|Full income Threshold
|Might require documentation, PR work, etc.
|Better for essential but underfunded OSS with problems
|Necessity to pay
|Completely voluntary; Better for essential OSS
|Requires charitable entity or company-level consideration of taxes, etc.
|Can range from unrestricted use of money to development of specific features
|Scales with the number of companies (but probably capped at salary level)
|Effort for marketing
|Companies often seek out OSS on their own (essential to their products)