Invoice Ninja
Invoice Ninja's patch train grinds on: QuickBooks sync, Peppol validation, gateway fixes.
Comparison · Finance
Firefly III vs SolidInvoice
A side-by-side editorial comparison of Firefly III and SolidInvoice — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
Firefly III vs SolidInvoice: at a glance
What is Firefly III?
A nightly development tag fires daily; the actual changes stay off the feed.
The feed is entirely automated development-release tags, several a day, each carrying the same boilerplate warning that the build is a test release and probably buggy. No feature, fix or version detail reaches the entry text, so the visible feed reports build activity and nothing else.
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.
Firefly III vs SolidInvoice: editorial side-by-side
Firefly III
5.0FINANCE
A nightly development tag fires daily; the actual changes stay off the feed.
◆ Current state
The feed is entirely automated development-release tags, several a day, each carrying the same boilerplate warning that the build is a test release and probably buggy. No feature, fix or version detail reaches the entry text, so the visible feed reports build activity and nothing else.
◆ Where it's heading
This is a release-automation artifact rather than a changelog. Cadence here says the project is actively developed; it says nothing about what is being developed. Any real signal about Firefly III's direction lives in the stable releases, which this feed does not distinguish from nightlies.
◆ Prediction
The tags will keep firing daily. Nothing about the product's direction can be read from this feed without a stable-release source alongside it.
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.
Alternatives to Firefly III 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 Firefly III or SolidInvoice.
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 Firefly III alternatives → · See all SolidInvoice alternatives →
Recent activity from Firefly III and SolidInvoice
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 12h agoFirefly IIIDevelopment release for 2026-08-05
- 1d agoFirefly IIIDevelopment release for 2026-08-04
- 1d agoFirefly IIIDevelopment release for 2026-08-04
- 1d agoFirefly IIIDevelopment release for 2026-08-04
- 1d agoFirefly IIIDevelopment release for 2026-08-03
- 2d agoFirefly IIIDevelopment release for 2026-08-03
- 1mo agoSolidInvoiceRelease 3.0.1
- 1mo agoSolidInvoiceRelease 3.0.0 ⚡
- 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 Firefly III and SolidInvoice?
Both compete on the same themes — self-hosted — within Finance. Firefly III 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 Firefly III better than SolidInvoice?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Firefly III 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 Firefly III?
Top Firefly III alternatives in Finance are ranked by recent ship velocity. Browse the "Firefly III alternatives" section above for the current picks, or visit /alternatives/firefly-iii 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.