material for making something such as food, web page, art, / material for writing a document

(Internet) a website

offer / sponsorship (e.g. of a TV program)

to offer / to sponsor

costing no money / unbound by promises or contracts / independent of any system / without something

freedom in the above senses

toll-free (telephone call)

accessible, barrier-free (being free of barriers to people, especially disabled people)

freelance writer

(software) free software (software that can be freely copied and modified)