Firefly III
A nightly development tag fires daily; the actual changes stay off the feed.
Comparison · Finance
SolidInvoice vs Invoice Ninja
A side-by-side editorial comparison of SolidInvoice and Invoice Ninja — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
SolidInvoice vs Invoice Ninja: at a glance
What is SolidInvoice?
SolidInvoice finally shipped the 3.0 it spent a year staging in alphas and betas.
After more than twelve months of alpha and beta releases, SolidInvoice 3.0 landed in June with the accumulated work of that cycle: email verification, Google OAuth, two-factor authentication, real user profiles, flat-rate tax support and a Meilisearch-backed search layer. Underneath it, the project moved onto a shared platform config and pulled trial and SaaS logic into an external bundle. The 2.3 line ran in parallel the whole time, absorbing security backports.
What is Invoice Ninja?
Invoice Ninja's patch train grinds on: QuickBooks sync, Peppol validation, gateway fixes.
Invoice Ninja ships point releases every few days, each bundling translations, gateway fixes and accounting-sync work. The current run covers QuickBooks sync improvements, Peppol e-invoicing validation, reminder send-time handling and rounding fixes for Authorize.net and Stripe refunds. Nothing in the recent window changes what the product does.
SolidInvoice vs Invoice Ninja: editorial side-by-side
SolidInvoice
0.0FINANCE
SolidInvoice finally shipped the 3.0 it spent a year staging in alphas and betas.
◆ Current state
After more than twelve months of alpha and beta releases, SolidInvoice 3.0 landed in June with the accumulated work of that cycle: email verification, Google OAuth, two-factor authentication, real user profiles, flat-rate tax support and a Meilisearch-backed search layer. Underneath it, the project moved onto a shared platform config and pulled trial and SaaS logic into an external bundle. The 2.3 line ran in parallel the whole time, absorbing security backports.
◆ Where it's heading
Two threads run through this changelog. The visible one is identity and account management catching up to what users expect from a billing app — signup verification, OAuth, 2FA, self-serve company deletion. The less visible one is the codebase being restructured around reusable solidworx platform components with Sentry and Prometheus instrumentation, which is the shape of a project preparing to run itself as a hosted service rather than only as a download.
◆ Prediction
With 3.0 out and 3.0.1 already repairing the upgrade migration path, the near-term work is likely more 3.0.x stabilization for people coming off 2.3 rather than new features.
Invoice Ninja
5.0FINANCE
Invoice Ninja's patch train grinds on: QuickBooks sync, Peppol validation, gateway fixes.
◆ Current state
Invoice Ninja ships point releases every few days, each bundling translations, gateway fixes and accounting-sync work. The current run covers QuickBooks sync improvements, Peppol e-invoicing validation, reminder send-time handling and rounding fixes for Authorize.net and Stripe refunds. Nothing in the recent window changes what the product does.
◆ Where it's heading
The work concentrates where self-hosted invoicing actually breaks: cross-border e-invoicing compliance, accounting-system sync, and the long tail of payment-gateway edge cases. That is maintenance of a widening compliance surface rather than new capability, and the release notes read as pull-request lists rather than user-facing announcements.
◆ Prediction
Expect the same cadence of small releases weighted toward e-invoicing regimes and QuickBooks reconciliation; the entries give no indication of a larger feature landing.
Alternatives to SolidInvoice and Invoice Ninja
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 SolidInvoice or Invoice Ninja.
CloudZero
Cloud cost observability is becoming AI spend control, with model routing as the first real lever.
inDinero
A CPA firm publishing pricing pages, not releases — this feed is a sales funnel.
Hyperledger Besu
Besu tags a release candidate a month, and half of them are titled after changelog chores.
Pigment
Pigment's Agents break out of single applications and start reading your spreadsheets.
Carta
Carta is pulling fund back-office paperwork in-app, then walking into the deal team's CRM.
See all SolidInvoice alternatives → · See all Invoice Ninja alternatives →
Recent activity from SolidInvoice and Invoice Ninja
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 14h agoInvoice NinjaVersion-tagging fix
- 15h agoInvoice NinjaQuickBooks sync improvements and translation updates
- 1d agoInvoice NinjaReminder send-time fix, Peppol validation, QuickBooks tax updates
- 1mo agoInvoice NinjaPasskeys, new login flow, webhook and Nordigen fixes
- 1mo agoSolidInvoiceRelease 3.0.1
- 1mo agoInvoice NinjaGlobal tags across entities, QuickBooks imports, filter fixes
- 1mo agoSolidInvoiceRelease 3.0.0 ⚡
- 2mo agoInvoice NinjaTinyMCE upgrade and Dependabot config
- 2mo agoSolidInvoice3.0.0-beta1
- 2mo agoSolidInvoiceRelease 2.3.17
- 4mo agoSolidInvoice3.0.0-alpha2
- 5mo agoSolidInvoiceRelease 2.3.16
Frequently asked questions
What is the difference between SolidInvoice and Invoice Ninja?
Both compete on the same themes — self-hosted — within Finance. Invoice Ninja is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is SolidInvoice better than Invoice Ninja?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Invoice Ninja is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Finance products to evaluate alongside.
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.
What are the best alternatives to Invoice Ninja?
Top Invoice Ninja alternatives in Finance are ranked by recent ship velocity. Browse the "Invoice Ninja alternatives" section above for the current picks, or visit /alternatives/invoice-ninja for the full list with editorial commentary on each.