Firefly III
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Comparison · Finance
Mollie vs SolidInvoice
A side-by-side editorial comparison of Mollie and SolidInvoice — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:payments
Mollie vs SolidInvoice: at a glance
What is Mollie?
Mollie's Payments API now supports embedded saved cards — a real concession to merchants who own their checkout.
Mollie just enabled saving cards during checkout directly via the Payments API, letting merchants build fully embedded 1-click flows without redirecting to Mollie's hosted page. Alongside it: partial credit notes for specific invoice items, a new Methods Component beta for custom low-code checkouts, expanded webhook reference with permission requirements, and integration updates (Prestashop 6.4.3, VirtueMart for Joomla). Several smaller dashboard ergonomics ship in the same window.
What is SolidInvoice?
SolidInvoice 3.1.3 patches payment settling and clears 12 Symfony advisories.
SolidInvoice, the self-hosted invoicing app, is in a patch cycle on 3.1. The 29 October trio brought custom invoice templates, invitation expiry and a fixed upgrade path with migrations at startup or as a Helm pre-upgrade job. 3.1.3 follows with fixes: invoices paid through the API or MCP are only marked paid once the payment settles, the revenue chart counts each month once, and a Symfony bump clears 12 security advisories.
Mollie vs SolidInvoice: editorial side-by-side
Mollie
5.3FINANCE
Mollie's Payments API now supports embedded saved cards — a real concession to merchants who own their checkout.
◆ Current state
Mollie just enabled saving cards during checkout directly via the Payments API, letting merchants build fully embedded 1-click flows without redirecting to Mollie's hosted page. Alongside it: partial credit notes for specific invoice items, a new Methods Component beta for custom low-code checkouts, expanded webhook reference with permission requirements, and integration updates (Prestashop 6.4.3, VirtueMart for Joomla). Several smaller dashboard ergonomics ship in the same window.
◆ Where it's heading
Mollie is repositioning from a hosted-checkout payments processor toward a more developer-platform shape — saved cards in the Payments API, the Methods Component low-code SDK, and the Unmatched credit transfers API all point the same direction. The webhook reference work and Token ID search in logs suggest the team is building for serious integrators who run Mollie alongside other payment rails.
◆ Prediction
Expect more checkout primitives to migrate from hosted-only to API-accessible (likely subscriptions and recurring billing next), and the Methods Component beta to graduate with deeper customization. Continued European e-commerce platform integrations remain on the conveyor belt.
SolidInvoice
5.0FINANCE
SolidInvoice 3.1.3 patches payment settling and clears 12 Symfony advisories.
◆ Current state
SolidInvoice, the self-hosted invoicing app, is in a patch cycle on 3.1. The 29 October trio brought custom invoice templates, invitation expiry and a fixed upgrade path with migrations at startup or as a Helm pre-upgrade job. 3.1.3 follows with fixes: invoices paid through the API or MCP are only marked paid once the payment settles, the revenue chart counts each month once, and a Symfony bump clears 12 security advisories.
◆ Where it's heading
After the large 3.0 release in June, work has moved to hardening: upgrade paths, packaging (Snap, static PHP builds) and correctness in payments and reporting. The mention of MCP payments shows AI-agent access is already wired into billing, though the entries don't detail it.
◆ Prediction
Expect more 3.1.x patches on packaging and payment edge cases; the entries don't signal what 3.2 will contain.
Alternatives to Mollie and SolidInvoice
Other Finance products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Mollie or SolidInvoice.
Shift4
Shift4 Venue Q4-R2 is on canary venues now, with global release set for November 17.
Payhawk
Payhawk adds SWIFT payment tracking and a DualEntry ledger sync as ERP coverage widens
TaxDome
TaxDome Pipelines now remember your filters, and long task names stop getting cut off.
LNbits
LNbits 1.7.1 follows the urgent 1.7.0 fix by rotating auth keys.
Kolleno
Kolleno is stretching from collections software toward the whole cash cycle.
See all Mollie alternatives → · See all SolidInvoice alternatives →
Recent activity from Mollie and SolidInvoice
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3d agoSolidInvoiceSolidInvoice 3.1.3 fixes payment settling, clears 12 advisories
- 15d agoSolidInvoiceSolidInvoice 3.1.0: custom invoice templates, invitation expiry
- 15d agoSolidInvoiceSolidInvoice 3.1.1: post-3.1.0 bug fixes
- 15d agoSolidInvoiceSolidInvoice 3.1.2 fixes the broken in-app upgrade path
- 2mo agoSolidInvoiceInvoice lines now say '1 hour' instead of '1 hours'
- 4mo agoSolidInvoiceRelease 3.0.1
- 6mo agoMollieMollie Prestashop plugin 6.4.3 ships
- 6mo agoMollieWebhooks reference adds beta event types and permission requirements
- 7mo agoMollieSave card during checkout via the Payments API ⚡
- 7mo agoMolliePartial credit notes per invoice item, with discount support
- 7mo agoMollieMethods Component Checkout is now in Beta
- 7mo agoMollieToken ID search added to Request Logs
Frequently asked questions
What is the difference between Mollie and SolidInvoice?
Both compete on the same themes — payments — within Finance. Mollie and SolidInvoice are shipping at a similar cadence (velocity 5.3 vs 5.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Mollie better than SolidInvoice?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Mollie and SolidInvoice are shipping at a similar cadence (velocity 5.3 vs 5.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Finance products to evaluate alongside.
What are the best alternatives to Mollie?
Top Mollie alternatives in Finance are ranked by recent ship velocity. Browse the "Mollie alternatives" section above for the current picks, or visit /alternatives/mollie for the full list with editorial commentary on each.
What are the best alternatives to SolidInvoice?
Top SolidInvoice alternatives in Finance are ranked by recent ship velocity. Browse the "SolidInvoice alternatives" section above for the current picks, or visit /alternatives/solidinvoice for the full list with editorial commentary on each.