Firefly III
Firefly III is pushing multiple development builds daily with no published changelog content
Comparison · Finance
SolidInvoice vs Bigcapital
A side-by-side editorial comparison of SolidInvoice and Bigcapital — release velocity, themes, recent moves, and the top alternatives to consider.
SolidInvoice vs Bigcapital: 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 Bigcapital?
Bigcapital ships multiple releases per week, adding SMS notifications, banking audit logs, and Plaid hardening.
Bigcapital is an open-source cloud accounting product shipping at a high cadence — multiple tagged releases per week across server, webapp, and SDK layers. The last two weeks show a focused push on banking features: Plaid sync hardening, audit logs for banking modules, auto-recognition of bank transactions via queue, and a landed cost feature flag. SMS notifications are being wired in behind a feature flag, alongside a broad internal refactor from snake_case to camelCase API responses.
SolidInvoice vs Bigcapital: 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.
Bigcapital
5.0FINANCE
Bigcapital ships multiple releases per week, adding SMS notifications, banking audit logs, and Plaid hardening.
◆ Current state
Bigcapital is an open-source cloud accounting product shipping at a high cadence — multiple tagged releases per week across server, webapp, and SDK layers. The last two weeks show a focused push on banking features: Plaid sync hardening, audit logs for banking modules, auto-recognition of bank transactions via queue, and a landed cost feature flag. SMS notifications are being wired in behind a feature flag, alongside a broad internal refactor from snake_case to camelCase API responses.
◆ Where it's heading
The product is deepening its banking and financial operations surface. Plaid integration is getting production-grade attention (concurrent-run guards, proper disconnect handling, audit trails), and landed cost accounting signals a move toward more complex inventory and purchasing workflows. The API SDK with typed OpenAPI coverage is being built in parallel, suggesting a platform push toward integrations and potentially a public API offering.
◆ Prediction
SMS notifications and the typed SDK will likely ship out of feature-flag status as the next named releases. Landed cost, once out of flag, will be the headline capability for users with inventory and import workflows.
Alternatives to SolidInvoice and Bigcapital
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 Bigcapital.
Shift4
Shift4 maintains a steady multi-product release cadence across its hospitality POS and payments stack.
Stigg
Stigg ships natural language contract management, completing its build-out as an AI-native commercial operations layer.
FreeAgent
FreeAgent is expanding beyond freelancers into landlord-specific accounting with automated rental statement processing.
Intuit Intelligence
QuickBooks rebuilds its bank feed around partial matches, AI-coded fields, and a new accountant platform.
LNbits
LNbits v1.6.0 replaces Python extension security reviews with WASM sandboxing — a new distribution model for Lightning tools.
See all SolidInvoice alternatives → · See all Bigcapital alternatives →
Recent activity from SolidInvoice and Bigcapital
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 10d agoBigcapitalv0.25.38 — bug fixes and org switcher search
- 11d agoBigcapitalv0.25.37 — SMS notifications feature flag, dark mode, API casing refactor
- 15d agoBigcapitalv0.25.36 — SMS SDK coverage, bug fixes
- 17d agoBigcapitalv0.25.35 — banking audit logs, auto-transaction recognition, landed cost flag
- 20d agoBigcapitalv0.25.34 — password security fix, Plaid cleanup, Watchtower auto-update
- 22d agoBigcapitalv0.25.33 — remember me, report transaction drill-down, date localization
- 2mo agoSolidInvoiceRelease 3.0.1
- 2mo agoSolidInvoiceRelease 3.0.0 ⚡
- 3mo agoSolidInvoice3.0.0-beta1
- 4mo agoSolidInvoiceRelease 2.3.17
- 5mo agoSolidInvoice3.0.0-alpha2
- 6mo agoSolidInvoiceRelease 2.3.16
Frequently asked questions
What is the difference between SolidInvoice and Bigcapital?
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 SolidInvoice better than Bigcapital?
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 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 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.