SigNoz
92 · HealthyOpenTelemetry-native observability with logs, metrics and traces in one app.
Directory / Monitoring & error tracking
Open source Monitoring & error tracking
Uptime Kuma
83 · HealthyUptime monitor for HTTP, TCP, DNS and more, with status pages and many notification channels.
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.
Sentry (self-hosted)
98 · HealthyError tracking and performance monitoring; the same code as Sentry's hosted service.
Directory / Monitoring & error tracking / Sentry (self-hosted)
Sentry (self-hosted)
Error tracking and performance monitoring; the same code as Sentry's hosted service.
Will it still be around?
Health 98/100 · Healthy
Activity, bus factor and issue responsiveness. Breakdown
Can a business use it freely?
Source-available, not open source
Functional Source License 1.1 (Apache-2.0 future license) · relicensed to something stricter in 2023. Details
Alternative to
Savings proposal
A 25-host team on Datadog Infrastructure Pro + APM pays about $1,150 a month. Self-hosting Sentry (self-hosted) costs about $576 a month to run plus $2,880 to set up, so it pays for itself in month 6 and saves about $17,784 over three years.
List price: Datadog Infrastructure Pro + APM, billed annually. $15 per host for Infrastructure Pro plus $31 per host for APM. Logs and other products are extra. Count hosts, not people. Source, checked 2026-10-07.
Saved over 3 years
$17,784
Pays for itself
Month 6
Saved in year one
$4,008
Each month
$1,150 → $576
Show as a table
| Month | Datadog | Self-hosted | Difference |
|---|---|---|---|
| Today | $0 | $2,880 | −$2,880 |
| Month 3 | $3,450 | $4,608 | −$1,158 |
| Month 6 | $6,900 | $6,336 | $564 |
| Month 9 | $10,350 | $8,064 | $2,286 |
| Month 12 | $13,800 | $9,792 | $4,008 |
| Month 18 | $20,700 | $13,248 | $7,452 |
| Month 24 | $27,600 | $16,704 | $10,896 |
| Month 30 | $34,500 | $20,160 | $14,340 |
| Month 36 | $41,400 | $23,616 | $17,784 |
Assumptions you can change
Self-hosting Sentry (self-hosted) usually means several services (analytics store, queues, search). Hours are for one engineer; the server cost is a typical cloud VPS with backups and grows with the number of people using it.
Not included: paid editions or features of Sentry (self-hosted) (see What's free?), large data migrations, and compliance work. All amounts in US dollars at list price; your negotiated price may differ.
Health score: 98/100
Activity45% weight
100/100
- Last commit today (100/100).
- 19417 commits in the past 12 months (100/100).
- 23 releases in the past 12 months (100/100).
Bus factor30% weight
100/100
- Top contributor wrote 15% of the last 91 commits (past 12 months).
- 33 people authored those commits.
Responsiveness25% weight
94/100
- 90% of all issues are closed (1748 open, 15642 closed) (100/100).
- 27 of 30 recent issues got a reply or were closed (90/100).
Score v2. How the health score works.
License
Functional Source License 1.1 (Apache-2.0 future license) · Source-available, not open source
Any use except a competing commercial product or service. Each version becomes Apache-2.0 two years after release.
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.
License history
- 2023-11-17: BUSL-1.1 → FSL-1.0-Apache-2.0 (commit)
What's free?
Enterprise features many open-core projects keep for paid plans.
| Feature | Self-hosted, free? |
|---|---|
| SSO (SAML) | Unknown |
| SSO (OIDC) | Unknown |
| SCIM provisioning | Unknown |
| Audit logs | Unknown |
| Role-based access control | Unknown |
| Multi-tenancy | Unknown |
We haven't verified which of these features are free for this project yet.
GitHub metrics
| Stars | 46k | Forks | 4.9k |
|---|---|---|---|
| Last commit | today | Commits, 12 months | 19k |
| Releases, 12 months | 23 | Last release | yesterday |
| Contributors | 355 | Active authors | 33 in last 91 commits |
| Open issues | 1.7k | Closed issues | 16k |
Snapshot from 2026-10-08.