Indy is strong on the paperwork around the work. It is thinner on the work itself, and it has no concept of your capacity.
Indy covers the freelance admin stack well: proposals, contracts, invoices and forms in one place.
Indy will help you send a proposal and invoice it. It will not tell you whether you have room to take the job, because it does not model your hours. Freshlance treats that as the central question and derives everything else from it.
Competitor details as we understand them at time of writing. Check their site for current pricing.
Free forever for 2 projects and 2 clients. No credit card, no trial clock.