Every correspondence you send out has to look professional. Popular full service accounting solutions like Intuit and Freshbooks can cost well into the thousands, and when you’re bootstrapping or working with minimal outside capital, every dollar counts.

Every online invoicing tool listed on this page is completely free. You’ll find that most will offer “upgrade” options for value-added services like sending email reminders, tracking, and saving/downloading your invoices for future reference.

Generally the self-hosted tools like Simple Invoices, Fusion Invoice, and other open source freebies you can find on SourceForge, come with a very complete back-end, but they’re also less newbie friendly and any problems that arise may require extensive “Googling” to remedy.…