Firefly III
A nightly development tag fires daily; the actual changes stay off the feed.
Comparison · Finance
Bigcapital vs SolidInvoice
A side-by-side editorial comparison of Bigcapital and SolidInvoice — release velocity, themes, recent moves, and the top alternatives to consider.
Bigcapital vs SolidInvoice: at a glance
What is Bigcapital?
Bigcapital is rewriting its webapp in TypeScript while closing tenancy and race-condition bugs.
Bigcapital's recent releases are almost entirely engineering hygiene rather than accounting features. The webapp is moving to TanStack Query hooks and TypeScript page by page, drawers and dialogs are being co-located with the pages that own them, and a generated TypeScript SDK now sits between the app and the NestJS server. The feature work that does surface — bulk account activation, customer and vendor form UX — arrives as a byproduct of pages being rewritten anyway.
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.
Bigcapital vs SolidInvoice: editorial side-by-side
Bigcapital
5.0FINANCE
Bigcapital is rewriting its webapp in TypeScript while closing tenancy and race-condition bugs.
◆ Current state
Bigcapital's recent releases are almost entirely engineering hygiene rather than accounting features. The webapp is moving to TanStack Query hooks and TypeScript page by page, drawers and dialogs are being co-located with the pages that own them, and a generated TypeScript SDK now sits between the app and the NestJS server. The feature work that does surface — bulk account activation, customer and vendor form UX — arrives as a byproduct of pages being rewritten anyway.
◆ Where it's heading
This is a codebase being prepared to move faster later: an OpenAPI-generated SDK, typed forms, lint enforcement and error-reporting middleware are the scaffolding an open-source accounting app needs before it can absorb outside contributions at volume. The security fixes running in parallel — cross-tenant attachment access, a TOCTOU race in financial commands — suggest multi-tenant hardening is being done in the same sweep. Little of this is visible to an accountant using the product; the changelog records a platform being rebuilt underneath a stable interface.
◆ Prediction
With the SDK and TypeScript migration largely in place, the next releases are likely to spend that groundwork on user-facing accounting features rather than further refactoring — though the run of tenancy patches suggests hardening is not finished.
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 Bigcapital 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 Bigcapital or SolidInvoice.
Invoice Ninja
Invoice Ninja's patch train grinds on: QuickBooks sync, Peppol validation, gateway fixes.
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.
See all Bigcapital alternatives → · See all SolidInvoice alternatives →
Recent activity from Bigcapital and SolidInvoice
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 22h agoBigcapitalBigcapital 0.25.25 closes a TOCTOU race in financial commands
- 2d agoBigcapitalBigcapital 0.25.24 migrates the webapp to TanStack Query and TypeScript pages
- 1mo agoSolidInvoiceRelease 3.0.1
- 1mo agoBigcapitalBigcapital 0.25.23 adds bulk activate and inactivate for accounts
- 1mo agoBigcapitalBigcapital 0.25.22 ships with no recorded changes
- 1mo agoBigcapitalBigcapital 0.25.21 fixes cross-tenant attachment access and report base currency
- 1mo agoSolidInvoiceRelease 3.0.0 ⚡
- 2mo agoSolidInvoice3.0.0-beta1
- 2mo agoSolidInvoiceRelease 2.3.17
- 4mo agoBigcapitalBigcapital 0.25.20 fixes report printing and bulk uncategorize
- 4mo agoSolidInvoice3.0.0-alpha2
- 5mo agoSolidInvoiceRelease 2.3.16
Frequently asked questions
What is the difference between Bigcapital and SolidInvoice?
They serve adjacent needs but don't currently overlap on shipped themes. Bigcapital 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 Bigcapital better than SolidInvoice?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Bigcapital 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 Bigcapital?
Top Bigcapital alternatives in Finance are ranked by recent ship velocity. Browse the "Bigcapital alternatives" section above for the current picks, or visit /alternatives/bigcapital 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.