ERPNext
86 · HealthyFull ERP suite covering accounting, inventory, sales, purchasing and HR, with a CRM module for leads and opportunities.
Open source Accounting & invoicing
Bigcapital
58 · CautionDouble-entry accounting with financial reports, inventory and invoicing.
Source-available and unverified licenses
The code for these is public, but the license is not an OSI open source license, or we have not verified it yet. Check the license notes on each project before relying on it.
Akaunting
87 · HealthyAccounting app for small businesses with invoicing, expenses and an app store.
Invoice Ninja
74 · StableInvoicing, quotes, payments and time tracking for freelancers and small businesses.
Invoice Ninja
Invoicing, quotes, payments and time tracking for freelancers and small businesses.
Alternative to
Will it still be around?
Stable
Score 74/100
Can a business use it freely?
Free, no reselling
Elastic License 2.0 · source-available, not open source
Flat Rate Deploy
A 25-user team on FreshBooks Plus pays about $307 a month. Invoice Ninja on OpenTools costs $39 a month, setup included, so you save $268 a month, about $9,648 over three years.
Monthly cost
- Invoice Ninja on OpenTools
- $39
- FreshBooks
$307
You save each month
$268/mo
87% less than today
Saving from month one
You save
- Over 3 years
- $9,648
- In year one
- $3,216
List price checked 7 Oct 2026 · Source · Disclaimer
Health score: 74/100
Stable · activity, bus factor and issue responsiveness, from GitHub
Score v2 · How it works
Activity
45% weight100/100
- Last commit 22 days ago (100/100).
- 2202 commits in the past 12 months (100/100).
- 50+ releases in the past 12 months (100/100).
Bus factor
30% weight15/100
- Top contributor wrote 89% of the last 100 commits (past 12 months).
- 7 people authored those commits.
Responsiveness
25% weight98/100
- 96% of all issues are closed (214 open, 4602 closed) (100/100).
- 29 of 30 recent issues got a reply or were closed (97/100).
License
Free, no reselling
Elastic License 2.0 · Source-available, not open source
What you need to do
Free to self-host and use in your business, changes included. You may not sell it or offer it to others as a hosted service that competes with the vendor.
For Invoice Ninja
You can't offer it to third parties as a hosted or managed service, or bypass its license-key features.
Elastic License 2.0 · Source-available, not open source. The code is public, but the license restricts how you can use it, usually by banning competing hosted services or capping production use. Not open source.
License text checked 2026-10-07 · Read it
GitHub activity
- Stars
- 10k
- Forks
- 2.7k
- Commits, 12 mo
- 2.2k
- last 22 days ago
- Releases, 12 mo
- 50+
- last 3 days ago
- Contributors
- 110
- 7 in last 100 commits
- Open issues
- 214
- 4.6k closed
Snapshot from 2026-10-08
Top contributors
Points for pull requests merged into Invoice Ninja and reviews of them since 10 October 2025. Building something another user asked for earns more. 35 people have points on Invoice Ninja in all.
