Inkvoice vs SolidInvoice

Inkvoice is open-source invoicing software for freelancers, small businesses, and small teams. It creates invoices and quotes, which can be turned into invoices, shared through links, or exported as PDFs. Recurring invoices can be generated automatically on monthly, quarterly, or annual schedules. Customers can pay through Stripe or PayPal checkout; users can also record manual and partial payments. The software tracks billable expenses and provides tax summaries, accounts-receivable aging, profit-and-loss reports, and cash-flow forecasts. An opt-in e-invoicing module supports EN 16931 formats, including ZUGFeRD 2.2, XRechnung, and PEPPOL BIS. Inkvoice runs on the web, Linux, through an API, or as a self-hosted deployment. The self-hosted build stores application data in a SQLite file and can run in a Docker container. Cloud Free is free, with one user and five customers; Cloud Starter is $4.99 a month, and Cloud Pro is $14.99 a month. Both paid cloud plans offer yearly billing with two months free.

SolidInvoice is invoicing software for creating recurring invoices, accepting online payments, sending payment reminders, and billing in multiple currencies. It runs on the web, Linux, and macOS. The hosted Solo plan is $9 a month and includes 10 active clients, unlimited invoices, one seat, online payments, recurring invoices, and multi-currency support. Pro is $19 a month, with unlimited clients and invoices, three seats, automated reminders, custom branding, and REST API and MCP Server access. Business costs $39 a month and includes 10 team seats, invoice and quote templates, a custom domain, and dedicated support. A self-hosted plan is listed at free, under the MIT license, for running on your own server with no per-client limits. The pricing note lists a free plan, paid plans from $9/mo, and a 14-day trial. SolidInvoice’s maker was founded in 2013.